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  • Polymer and Materials Science  (3,775)
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  • 1955-1959  (7,894)
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  • 101
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 442-445 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Corrosion Protection by Paint Systems, as Appraised by Statistics and Exemplified by Some Prominent Steel BuildingsThe technical literature contains a number of data concerning losses due to corrosion (in quantitative and monetary terms), the cost of corrosion protection (cost of labour and materials, etc.), and the size (in square metres) of the surface areas of steel buildings to be protected by paint systems. An attempt has been made to determine these items statistically.The example of the history of the paint protection of a prominent steel structure, viz. the Eiffel Tower, shows that effective corrosion protection by means of paints is possible if the coats are renewed in good time.
    Notes: Über die Verluste durch Korrosion (mengenmäßig und kostenmäßig), über die Kosten für den Korrosionsschutz (Löhne, Material usf.), über die Größe der durch Anstrichmittel zu schützenden Stahlbauten (m2), sind in der Literatur eine Anzahl von Angaben zu finden. Es wurde versucht, die Werte statistisch zu erfassen.Ferner wird am Beispiel eines bekannten Stahlobjektes, des Eiffelturmes, mittels der Anstrichgeschichte dieses Objektes gezeigt, daß ein Korrosionsschutz durch Anstriche möglich ist, wenn sie in den erforderlichen Zeiträumen erneuert werden.
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  • 102
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 461-462 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 103
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 463-464 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 104
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 538-539 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 105
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. XX 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 106
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 556-563 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The segregation of chromium from complex chromium sulphate solutionsUnder certain conditions of amperage, temperature and pH value, it is possible for chromium to be segregated, in glossy form, from complex chromium tri-sulphate solutions containing urea, at a current utilisation of 10 to 15 per cent. Such coatings can be used as a substitute for decorative chromium, though not for hard-chromium plating, as it is not possible to obtain coatings of major thickness. The method permits the direct chromium plating, zinc and iron. The chromium coatings show fissures which tend to widen at higher amperages.
    Notes: In komplexen Chrom-III-sulfatlösungen, die Harnstoff enthalten, kann Chrom unter bestimmten Bedingungen für Stromstärke, Temperature und pH-Werte in glänzender Form und bei Stromausbeuten von 10 bis 15% abgeschieden werden. Die Überzüge kommen als Ersatz für dekoratives Chrom, jedoch nicht für die Hartverchromung in Betracht, da größere Schichtdicken nicht erhalten werden. Kupfer, Messing, Nickel, Zink und Eisen können unmittelbar in glänzender Form verchromt werden. Die Chromüberzüge weisen Sprünge auf, die bei höheren Stromdichten breiter werden.
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  • 107
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 582-585 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 108
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 585-587 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 109
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 589-590 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 110
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 596-602 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 111
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 604-604 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 112
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 661-661 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 113
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 664-664 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 114
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 665-666 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Cast iron and fuming sulphuric acidIt is well known that the chemical industry is using cast iron reaction chambers for fuming sulphuric acid, although this practice is described as impermissible in the technical literature on corrosion. A scrutiny of the literature shows that this proscription dates back to two early publications which were concerned with a cast iron material in no way comparable to modern cast iron. It is essential to keep the dangerous silicon content low, and this is in fact being taken into account with modern cast iron by the suitable proportioning of carbon and the heat treatment.
    Notes: Es ist bekannt, daß in der chemischen Industrie gußeiserne Reaktionskessel für rauchende Schwefelsäure eingesetzt werden, obwohl dies auf Grund der Empfehlungen der Korrosionsliteratur nicht statthaft sei. An Hand der Literaturhinweise wird gezeigt, daß dieses Verbot sich auf zwei ältere Arbeiten bezieht und daß der Werkstoff dieser Arbeiten, „Gußeisen“, keinesfalls dem modernen Gußeisen entspricht.Es ist wichtig, den Prozentgehalt an dem gefährlichen Silicium tief zu halten, was durch die entsprechende Dosierung des Kohlenstoffes und durch die thermische Behandlung beim modernen Gußeisen auch tatsächlich berücksichtigt wird.
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  • 115
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 694-697 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 116
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 690-694 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 117
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 681-689 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The reaction mechanism in phosphating baths accelerated by nitrates or nitridesA description is given of plant designed for the continuous bonderizing of iron straps with zinc phosphate solutions. The oxidants used are nitrates (with and without oxygen) and nitrides. The stationary formation rate of all reaction products was measured. Nitrates are almost quantitatively reduced to ammonia in heterogeneous reaction. This results in the formation of F‥ only. Curves of the current potential show that the formation of ammonia is independent of the potential. It is limited by the diffusion of hydrogen or nitrate ions on the iron surface. If oxygen is added to the nitrates, a further quantity of iron, corresponding to the diffusion rate of iron is dissolved in the form of Fe‥ At the same time, the bulk of the bivalent iron is oxidized to Fe⃛; in homogeneous reaction. Nitrides have the effect of oxidizing the entire dissolved iron to Fe⃛, forming NO in the process. This is reduced to ammonia on the iron surface while bivalent iron is being dissolved
    Notes: Es wird eine Anlage zum kontinuierlichen Bondern von Eisenband mit Zinkphosphatlösungen beschrieben. Als Oxydationsmittel dienen Nitrate (mit und ohne Sauerstoff) und Nitrite. Die stationäre Bildungsgeschwindigkeit sämtlicher Reaktionsprodukte wird gemessen. Nitrate werden in heterogener Reaktion nahezu quantitativ zu Ammoniak reduziert. Dabei entsteht nur Fe++. Stromspannungskurven zeigen, daß die Bildung des Ammoniaks vom Potential unabhängig ist. Sie wird durch die Diffusion von Wasserstoff- oder Nitrationen an die Eisenoberfläche begrenzt. Bei Zusatz von Sauerstoff zu Nitraten wird soviel weiteres Eisen als Fe++ gelöst, wie der Diffusionsgeschwindigkeit des Eisens entspricht. Gleichzeitig wird der größte Teil des zweiwertigen Eisens in homogener Reaktion zu Fe+++ oxydiert. Nitrite oxydieren das gesamte gelöste Eisen zu Fe+++ und bilden dabei NO. Dieses wird an der Eisenoberfläche zu Ammoniak reduziert, wobei Eisen zweiwertig in Lösung geht.
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  • 118
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 718-721 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 119
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 727-727 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 120
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. XXIX 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 121
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 737-738 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Galvanic series of metals in respect of corrosives encountered in practiceThe well known electromotive series of elements can only to a limited extent be regarded as a criterion for the corrosion of metals. An effort has therefore been made to obtain, for fresh water and sea water,„Practical“ values of a galvanic series by means of measurements. It was found, however, that the open circuit potential cannot serve as the sole criterion for the corrosion performance of metal combinations. It is also essential to know the scope of the current/voltage curve of the electrode in the corrosion agent.
    Notes: Da die bekannte Spannungsreihe der Elemente nur in beschränktem Umfang Aussagen über die Korrosion der Metalle zuläßt, wurden für Wasser und Meerwasser „praktische“ Spannungsreihen durch Messungen ermittelt. Es zeigt sich jedoch, daß die Differenz der Spannungsreihenwerte nicht allein für das Korrosionsverhalten von Metallkombinationen maßgebend ist. Es ist auch wichtig, die Steilheit der Strom-Spannungs-Funktion der Elektrode im Korrosionsmittel zu kennen.
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  • 122
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 772-775 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 123
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 781-783 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 124
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 789-797 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 125
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 1-14 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Latest Developments in Antirust PaintingFor constructions made of steel a durable protection against rust can only be achieved if all factors conditioning the corrosive effects, especially the environmental influences like rain, dew, the dew point, temperature and agressiveness of the atmosphere, are considered. Their effects on the problem of priming and preliminary treatments of the surface (removal of scale and rust), on the efficiency of rust removers as well as on the protective value of wash primers are discussed. This is followed by information on the composition of protective paints, pigments and binders for priming and the composition of top coats; the specific aptitude of pigments, fillers and binders as well as on protective top paints.
    Notes: Ein dauerhafter Rostschutz von Stahlbauwerken setzt die Kenntnis aller sich auswirkenden Faktoren, insbesondere der Umwelteinflüsse wie Regeneinwirkung, Taubildung, Taupunkt, Temperatur und Aggressivität der Atmosphäre voraus. Ihre Auswirkung auf die Frage der Werksgrundierung, insbesondere der Untergrundvorbereitung (Entzunderung, Entrostung, Eignung) von Rostumwandlern und Schutzwert von Wash-Primern wird besprochen. Es folgen grundsätzliche Angaben über den Aufbau der Schutzanstrichmittel, Pigmente und Bindemittel für Grundierungen, über verschiedenartige Grundanstriche, über die Zusammensetzung der Deckanstriche, der spezifischen Eignung der Pigmente, Füllstoffe und Bindemittel, und über Rostschutz-Deckfarben.
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  • 126
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 38-40 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 127
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 26-29 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The Influence of Protective Colloids upon the Corrosion of BrassSome investigations showed that the corrosion of brass by acid plant substances is much lower than that caused by the corresponding vegetable acids of the same pH-value. The reason is obviously the presence of colloids in the plant matter. The article presents the results of investigations on the effects of protective colloids like pulvis acacia, e.g. albumin, agar, dextrine and potato starch upon the corrosion of brass in citric acid, hydrochloric acid and sulfuric acid. The data are represented in chart form. The protective effects of the various colloids differ very much according to the combination of colloid and acid. While an essential decrease of corrosion took place in citric acid solutions which is explained by an adsorption of colloid on the metal surface and the formation of a protective cover, the rate of corrosion was increased if hydrochloric acid was used even at constant concentration of colloids. Here dezincification took place which means that the more basic metal suffered a more intensive corrosive attack. The authors believe that protection in hydrochloric solutions could be achieved if a higher concentration of the colloid were used.
    Notes: Bei Forschungsarbeiten war gefunden worden, daß die Korrosion von Messing durch säuernde pflanzliche Substanzen geringer war als die durch die entsprechenden Fruchtsäuren mit gleichem pH verursachte Korrosion. Der Grund der Herabsetzung war offenbar der Kolloidgehalt der Pflanzen und in der vorliegenden Arbeit werden die Resultate von Untersuchungen über die Einwirkung derartiger Schutzkolloide wie Pulvis Acacia, Ei-Albumin, Agar, Dextrin und Kartoffelstärke auf die Korrosion von Messing in Zitronensäure, Salzsäure und Schwefelsäure vorgelegt. Das Material wurde in Tabellen zusammengestellt. Es zeigte sich, daß die Schutzwirkung der verschiedenen Kolloide sehr unterschiedlich war, sowohl in Bezug auf die Kolloide selbst als auch auf die angewandten Säuren. Während sich bei Zitronensäure deutliche Schutzwirkung durch Herabsetzung der Korrosion einstellte, die durch Adsorption des Kolloids an das Metall und Bildung eines Schutzfilms erklärt wird, wurde bei Salzsäure die Korrosion erhöht, wenn die gleichen Kolloidkonzentrationen angewendet wurden und es trat “Entzinkung” ein, d. h., das basische Metal wurde stärker angegriffen. Die Verfasser sind der Meinung, daß bei Verwendung höherer Kolloidkonzentrationen auch bei Salzsäure Schutzwirkung eintreten würde.
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  • 128
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: On the Electro-Deposition of Titanium from Aqueous Solutions of Potassium-Titanium-FluorideAs discerned from current density-voltage curves titanium can be deposited from aqueous solutions of potassium titanium fluoride. The deposition of the metal takes place by the formation of TiO++ ions and their reduction by nascent hydrogen. The cathode must consist of metals with high overvoltage. On aluminium cathodes deposition of titanium and passivation by aluminium and titanium hydroxides take place simultaneously.The effects are in agreement with the law of the formation of surface covers by Müller Machu. The current yields are very low. Though they would not exceed 30 pct. the current yields of this method are higher than ever before when other titaniums salts are used.On zinc cathodes there is no passivation. So the percentage of the metallic titanium in the deposition is higher than on aluminum cathodes. Micro-photographs demonstrate the influences of additives like gelatin, thiourea etc. which suppress the formation of hydroxides and oxides in the deposition. The formation thick deposits of titanium which are free from oxides is still meeting difficulties.
    Notes: Titan läßt sich, wie anhand von Strom-Spannungskurven gezeigt wird, aus dem Kaliumtitanfluorid in wäßriger Lösung abscheiden. Dabei erfolgt die Metallabscheidung auf dem Umweg über die Bildung von Ti2+-Ionen und durch Reduktion durch naszierenden Wasserstoff. Als Kathodenmaterial sind nur Metalle mit hoher Überspannung geeignet. An Aluminiumkathoden erfolgt während der Titanabscheidung auch eine Passivierung durch Aluminium- und Titanhydroxyd, wobei das Flächenbedeckungsgesetz von Müller-Machu erfüllt ist. Die Stromausbeuten sind nur gering, sie übersteigen 30% nicht, sind aber weit größer als dies mit anderen Titansalzlösungen bisher möglich war.An Zinkkathoden fehlt die Passivierung, daher ist der Anteil an metallischem Titan im Niederschlag größer als an Aluminium. Anhand von Mikrophotos wird der Einfluß von Zusätzen wie Gelatine, Thiobarnstoff u. dergl. aufgezeigt, welche die Bildung von Hydroxyd und Oxyd im Niederschlag unterdrücken. Die Herstellung dickerer Titanniederschläge, frei von Oxyden, bereitet noch Schwierigkeiten.
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  • 129
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 41-42 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 130
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Description / Table of Contents: Investigations of Pitting on Highly Alloyed Austenitic Chrome Nickel Steels and Ferritic Chrome Steels in Aqueous Solutions Containing HalidesTbe application of stainless steels in aqueous solutions containing halides is limited.The authors show that it is not the corrosion potential, determined by means of the generally applied test in a 10 pct. FeCl3-solution, but the slope of the potential vs. current density as a electrochemical data which indicates the sensitivity to pitting.The K3[Fe(CN)6]-test has proved to be a good quick method. By means of this method pitting is indicated as a active passive reaction.Pitting occurs only at potentials within a certain range which can be determined from a current density-voltage curve.In a 5 pct. sulfuric acid containing air, at room temperature the uniform transpassive dissolution of steel takes place only. In sulfuric acid solutions containing chlorides steel is corroded uniformly in its active state or by pitting but not transpassively. An addition of nitrate to such a solution inhibits pitting but increases the transpassive corrosion.
    Notes: Die Einsatzmöglichkeit der chemisch beständigen Stähle in halogenidhaltigen, wäßrigen Medien wird durch die Erscheinung der Lochfraßkorrosion eingeschränkt.Es wird gezeigt, daß bei der allgemein üblichen Prüfung in einer 10%igen FeCl3-Lösung für die Lochfraßanfälligkeit nicht das Korrosionspotential, sondern der Polarisationswiderstand als elektrochemische Meßgröße kennzeichnend ist.Als praktisches Schnellprüfverfahren hat sich der K3[Fe(CN)6]-Test bewährt. Mit Hilfe dieser chemischen Indikation wird der Lochfraß-Mechanismus als Aktiv-Passiv-Reaktion bewiesen. Das Auftreten der Lochfraßkorrosion ist an einen gewissen Potentialbereich gebunden, der durch Messung der Stromdichte-Potential-Kurve bestimmt werden kann.In reiner lufthaltiger 5%iger Schwefelsäure ist bei Raumtemperatur nur die gleichmäßig transpassive Stahlauflösung möglich. In chloridhaltiger Schwefelsäure kann der Stahl gleichmäßig aktiv oder durch Lochfraß, dagegen nicht transpassive korrodieren. Durch einen Nitratzusatz zur chloridhaltigen Schwefelsäure wird die Lochfraßkorrosion zugunsten der transpassiven Korrosion inhibitiert.
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 106-110 
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    Keywords: Chemistry ; Polymer and Materials Science
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 86-91 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Description / Table of Contents: On the Photo-Chemistry of Metallic Copper and its Influence on the Velocity of the Dissolution of Copper as ElectrodeBy etching copper with a mixture of nitric and hydrochloric acid, a sensitive layer is formed which is blackened according to the duration of the exposion to light. An exposion by means of a 6,7 V-incandescent lamp at a distance of 10 cm from the copper surface generates a spot of 1,75 cm2 surface. Three discontinuities occur in certain intervals. The intensity of the reflexion was measured by means of a photoelectric cell and a mirror-galvanometer. Increase of temperature causes a decrease of the velocity of blackening the sensitive layer. Observing the influence of light upon the velocity of the dissolution of copper we obtained a typical dependance of the velocity of corrosion on the photochemical reaction on the copper surface.
    Notes: Durch Ätzung von Kupfer mit einem HNO3-HCl-Gemisch entsteht eine photoaktive Kupferschicht, die nach Belichtung eine zeitlich abhängige Schwärzung aufweist. Bei der Belichtung mit einer 6,7 V-Glühlampe in einem Abstand von 10 cm wird auf der Kupferoberfläche ein Lichtfleck von etwa 1,75 cm2 gebildet. In bestimmten Zeitintervallen treten sodann drei Diskontinuitäten auf. Die Intensität der Reflexion wurde mit Photozelle und Spiegelgalvanometer registriert. Die Erhöhung der Temperatur führt zur Verminderung der Schwärzungsgeschwindigkeit der photoaktiven Schicht.Die Beobachtungen über den Einfluß des Lichtes auf die Auflösungsgeschwindigkeit des Kupfers in Elektrolyten ergaben eine typische Abhängigkeit der Korrosionsgeschwindigkeit von der an der Kupfer-Oberfläche stattgefundenen Reaktion.
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 111-115 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 116-121 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 122-122 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 121-122 
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    Description / Table of Contents: Investigations on the Corrosion Behavior of Aluminum and Aluminum Alloys upon Organic and Inorganic BasesThe article presents a comparison of the corrosive effects of organic and inorganic bases upon aluminium materials by means corrosion tests carried out at a temperature of 20°C for 73hrs. The aggressivity of the bases investigated decreases in the order of sodium hydroxide, methylamine, ethylamine, n-butylamine, ammonia, triethanolamine, sodium carbonate, calcium hydroxide, hydrazine. The sensitivity to corrosion of the materials decrease in the order of pure aluminium A1 99,3, purest aluminium Raffinal raf W(more than 99,99% Al) anticorodal Ac B, Avional Av-23 V, Perunal Pu V and Peraluman Pe-30 W. For every mixture of a base and water, there is a critical concentration at which the intensity of the attack reacher its maximum. High concentrated bases cause but low corrosion and anhydrous bases are fairly inactive. There is no destinct relationship between the corrosion behavior of the bases and their pH-values resp. their electric conductivity.
    Notes: In der vorliegenden Abhandlung wird auf Grund von bei 20°C durchgeführten 73stündigen Korrosionsversuchen mit verschiedenen Aluminiumwerkstoffen die aluminiumangreifende Wirkung organischer Basen mit der anorganischer verglichen. Die Aggressivität der untersuchten Basen nimmt in der anorganischer verglichen. Die Aggressivität der untersuchten Basen nimmt in der Reihenfolge Natriumhydroxyd, Methylamin, Aethylamin, n-Butylamin, Ammoniak, Triäthanolamin, Natriumcarbonat, Calciumhydroxyd, Hydrazin ab. Die Korrosionsfälligkeit einzelner Werkstoffe vermindert sich entsprechend der Reihe Reinaluminium Al 99,3, Reinstaluminium Raffinal Raf W (über 99,99% Al), Anticorodal Ac B, Avional Av-23 V, Perunal Pu V und Peraluman Pe-30 W. Bei jedem Gemisch Base/Wasser besteht eine kritische Konzentration, bei welcher die Intensität des Angriffs auf Aluminium ein Maximum erreicht. Sehr konzentrierte Basen wirken nur ganz schwach, wasserfreie Basen kaum aluminiumangreifend. Zwischen den Korrosionseigenschaften der einzelnen Basen und ihrem pH-Wert bzw. ihrer elektrischen Leitfähigkeit bestehen keine eindeutigen Zusammenhänge.
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 122-122 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 123-127 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 127-137 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 138-138 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 141-144 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 711-713 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959) 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 736-736 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 761-767 
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    Description / Table of Contents: A theory on the complementing process in phosphating baths(Formation rate of secondary cover layers on metals)Secondary cover layers are deposited on metals from saturated solutions if the equilibrium of the solution is disturbed by corrosion on the metal surface. The rate of corrosion and the rate at which the layer is formed are compared, using the phosphate treatment of iron as an example. With this process, the quotient of the HṠ consumed and the iron dissolved is governed by the stoichiometry of the oxidation reaction concerned. The quotients of the HṠ consumed and the quantity of the zinc phosphate deposit can be calculated if all reactions are diffusion controlled. It is thus assumed that the crystal nuclei are formed rapidly, and that equilibria between zinc and phosphoric acid in the solution remain adjusted upto the metal surface. This theory is confirmed experimentally. It serves to indicate and to determine the composition of complementry solution by means of which the baths can be kept stable.
    Notes: Sekundäre Deckschichten scheiden sich aus gesättigten Lösungen auf Metallen ab, wenn an der Metalloberfläche das Lösungsgleichgewicht durch Korrosion gestört wird. Die Geschwindigkeiten von Korrosion und Abscheidung werden am Beispiel der Phosphatierung von Eisen verglichen. Dabei ist der Quotient aus verbrauchtem H und gelöstem Eisen durch die Stöchiometrie der jeweiligen Oxydationsreaktion bedingt. Der Quotient aus verbrauchten H und Menge des Zinkphosphatniederschlags ist zu berechnen, wenn alle Reaktionen transportbestimmt sind. Es wird also angenommen, daß die Gleichgewichte zwischen Zink und Phosphorsäure in der Lösung bis hin zur Metalloberfläche eingestellt bleiben. Die Theorie wird experimentell bestätigt. Sie dient dazu, um Bäder mit optimalen Eigenschaften anzugeben. Ferner erlaubt sie, die Zusammensetzung von Ergänzungslösungen zu berechnen, mit denen die Bäder stationär gehalten werden können.
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 776-778 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 787-787 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 797-800 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 547-555 
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    Description / Table of Contents: The systematology of the corrosion of metals in soil I. IronOn the strength of laboratory and field tests, the corrosion behaviour of iron in soil is discussed as a case of contact corrosion. In a water-saturated soil, the size of the anodic spots on the surface of the iron is determined by the size of the soil particles, and the contact zone at the iron surface acts as a cathodic spot. A slight additional diffusion of oxygen leads to a cathodic control of the corrosion process of iron in the soil. A higher concentration of oxygen in the soil results in an anodic control of the corrosion process of iron. In the transition zone (unsaturated-saturated), an alternation occurs between the active and passive state of the iron in the soil so that a mixed control of the corrosion process can be encountered.In a water-saturated soil, there is a linear relationship between the proportion of the cathodic and anodic zones on the one hand, and the size of the soil particles on the other hand. In a system not saturated with water, an exponential function \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm F}_{\rm 4} {\rm = A (1 - e}^{{\rm - k2}} \cdot {\rm G}_{\rm p} {\rm)} $$\end{document} applies, where A and k are constants. Gp is the diameter of the glass globules, and Fa the size of the anodic zones.The relationship between the corrosion rate g and the water content of the soil, w, can be expressed by the equation \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm F}_{\rm 4} {\rm = A (1 - e}^{{\rm - k2}} \cdot {\rm G}_{\rm p} {\rm)} $$\end{document} Where K, b and c are constants.The authors discuss how the results of the field tests can be interpreted by the alternation of the active and passive behaviour of the iron, depending on the climatic conditions.
    Notes: Das Verhalten des Eisens im Erdboden wird an Hand von Labor- und Naturversuchen als ein Fall der Kontaktkorrosion besprochen. In einem an Wasser gesättigten Boden bestimmt die Größe der Bodenteilchen die Größe der anodischen Stellen der Eisenoberfläche. Für ein an Wasser gesättigtes System wird die Berührungszone an der Eisenoberfläche zur kathodischen Stelle. Geringe Sauerstoffnachdiffusion führt zu einem kathodisch kontrollierten Korrosionsvorgang des Eisens im Boden. Höhere Sauerstoff-konzentration im Boden führt zu einem anodisch kontrollierten Korrosionsvorgang des Eisens. Im Übergangsgebiet (ungesättigt-gesättigt) erfolgt ein Wechsel zwischen aktivem und passivem Zustand des Eisens im Boden und dabei wird die Korrosion anodisch oder kathodisch gesteuert.In einem an Wasser gesättigten Boden besteht eine lineare Funktion zwischen dem Verhältnis der kathodischen und anodischen Bezirke und der Größe der Bodenteilchen. Für ein an Wasser ungesättigtes System gilt die Exponentialfunktion \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm F}_{\rm 4} {\rm = A (1 - e}^{{\rm - k2}} \cdot {\rm G}_{\rm p} {\rm)} $$\end{document} wobei A und k Konstante sind. Gp ist der Durchmesser der Glaskugeln und Fa die Größe der anodischen Bezirke.Die Abhängigkeit der Korrosions-geschwindigkeit g von Wassergehalt des Bodens w läßt sich durch die Formel \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm g} = K \cdot w^b \cdot {\rm e}^{{\rm cw}} $$\end{document} darstellen, wobei K, b und c Konstante sind.Weiter wird angegeben, wie die Naturversuche durch den Austausch des aktiven und passiven Verhaltens des Eisens in Abbängigkeit der klimatische Bedingungen zu deuten ist.
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 579-582 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 463-463 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 697-705 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 708-710 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959) 
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    Description / Table of Contents: Contact Corrosion between Metals and Non-Metallic Materials in the Atmosphere and in some ElectrolytesContact corrosion is not consistently defined in the technical literature. On the strength of the new definition of corrosion, an attempt is made to arrive at a more precise definition of contact corrosion as well, and to emphasize the importance of studying this type of corrosion.With the aid of a classification of the cases of contact corrosion observed in industry, the causes of such corrosion are clarified and remedial measures suggested.The author describes a number of her own investigations on this subject.
    Notes: Der Begriff der Kontaktkorrosion ist in der Literatur nicht einheitlich definiert. Im vorliegenden Artikel wird versucht, auf Grund der neuen Definition des Begriffes Korrosion auch den der Kontaktkorrosion genauer zu umreißen und die Wichtigkeit des Studiums dieser Korrosionsart hervorzuheben.An Hand einer Klassifikation der in der Industrie beobachteten Fälle von Kontaktkorrosion werden die Ursachen ihrer Entstehung klargelegt und Maßnahmen zum Schutze vorgeschlagen.Über eine Anzahl eigener in dieser Richtung vorgenommener Untersuchungen wird berichtet.
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 512-516 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 528-535 
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 617-621 
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    Description / Table of Contents: The segregation Potential and the reaction mechanism of the segregation of chromium from complex chromium-tri-sulphate solutionsThere is no chromium segregation from pure chromium-trisulphate solutions, but the chromium hydroxide coatings at the copper cathodes are thicker. Chromium segregation only becomes possible with complex formation due to the addition of urea, which calls for very strong negative potentials exceeding EH = -1.06V. The variation of current and potential, as a function of time, gives rise to the assumption that a film acting as a diaphragm is formed on the cathode. This film is a pre-requisite to the segregation of chromium, land is also the cause of the gloss of the coatings. The mechanism of chromium segregation from the complex chromium-tri-sulphate bath is very similar to that from a chromic acid bath.
    Notes: Aus reinen Chrom-III-sulfatlösungen findet keine Chromabscheidung statt, sondern es treten nur dickere Überzüge aus Chromhydroxyd an Kupferkathoden auf. Erst bei einer Komplexbildung durch zugesetzten Harnstoff wird die Chromabscheidung möglich, wobei sehr stark negative Potentiale von mehr als EH = - 1,06 V erforderlich sind. Aus dem zeitlichen Verlauf der Stromstärke und des Potentials wurde auf die Ausbildung eines diaphragmenartigen Filmes auf der Kathode geschlossen, der erst die Voraussetzung für die Chromabscheidung ist. Er bewirkt auch den Glanz der Überzüge. Die Chromabscheidung aus dem komplexen Chrom-III-sulfatbad geht nach einem sehr ähnlichen Mechanismus wie die aus dem Chromsäurebade vor sich.
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 655-661 
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    Description / Table of Contents: Contribution to the Development of Neoprenes for the Protection or Chemical InstrumentsThe process of coating equipment with prevulcanised Neoprene plates as ex- plained in its various stages. In addition, seven cases are described in which such coatings have been found satisfactory in practice.
    Notes: Das Verfahren der Auskleidung von Apparaten mit vorvulkanisierten Neoprene-Platten wird in seinen einzelnen Stufen erläutert. Anschließend werden 7 Fälle beschrieben, in denen sich diese Auskleidungen bewährt haben.
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    Description / Table of Contents: Practical Experiences in the Corrosion Behavior of Zinc PaintsGeneral survey of zinc paints.Conditions of technical application.Preliminary treatment of iron surfaces.Comparison of the test results of various dust paints by different testing methods.Report on experiences with zinc dust paints in steel construction building, open air constructions and in steel sheet working industries.
    Notes: Allgemeines über Zinkanstrichmittel; Verarbeitungstechnische Erfordernisse; Vorbehandlung der Eisenoberfläche.Vergleichende Gegenüberstellung von Testergebnissen mit unterschiedlichen Zinkstaubfarben nach verschiedenen Testverfahren.Praktische Erfahrungen mit Zinkstaubfarben im allgemeinen Stahlhochbau, bei Freiluftkonstruktionen und in der Stahlblech-verarbeitenden Industrie.
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 74-77 
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    Description / Table of Contents: High Temperature Corrosion in Petrol Refining by Sulfur CompoundsAt temperatures above 260°C only stainless, highly alloyed steels resist the attack of the most corrosive agent in petrol refining which is hydrogen sulfide. For high temperature corrosion by hydrogen sulfide, the influences of the duration of wear, the concentration of the hydrogen sulfide, the pressure, the properties of the refined petrol and the quality of the steel are of essential importance besides of the effects of temperature. The author reports on last years investigations in BP-research station on the corrosion of stainless steels by hydrogen sulfide at high temperatures. The corrosion of the surface, the inter-crystalline corrosion and the stress corrosion of steels are discussed in detail.
    Notes: Dem Angriff des wesentlichsten korrosiven Agens in Erdölraffinerien, dem Schwefelwasserstoff, bei hohen Temperaturen (über 260°C) widerstehen praktisch ausschließlich rostfreie, hochlegierte Stähle. Bei der Hochtemperatur-Korrosion durch Schwefelwasserstoff sind neben der Temperatur auch Beanspruchungsdauer, Schwefelwasserstoff konzentration, Druck, Beschaffenheit des zu raffinierenden Öles und die Stahlqualität von Einfluß. Verfasser berichtet über die in den letzten Jahren in der BP-Research Station durchgeführten Untersuchungen über die Korrosion von rostfreien Stählen durch Schwefelwasserstoff bei hohen Temperaturen, wobei allgemeine Oberflächen-korrosion, interkristalline Korrosion und Spannungskorrosion der Stähle eingebend behandelt werden.
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    Description / Table of Contents: New Investigations into Hydrogen Adsorption and Dissolved IronThe solution processes of iron in n HCl were investigated and a correlation was found between the quantity of hydrogen absorbed in the iron and the rate at which the metal dissolved. A dynamical saturation equilibrium was established in the interior of the metal. From this the significance of partial reactions can be derived and the action of inhibitors explained.
    Notes: Es wurden die Auflösungsvorgänge von Eisen in In-HCL untersucht und ein Zusammenhang zwischen der Menge des vom Eisen aufgenommenen Wasserstoffs und der Auflösungsgeschwindigkeit des Metalls gefunden. Es stellt sich dabei ein dynamisches Sättigungsgleichgewicht im Innern des Metalls ein. Daraus läßt sich die Bedeutung der Teil-Reaktionen ableiten und das Eingreifen von Inhibitoren erklären.
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    Description / Table of Contents: The Effect of Heat on WoodIn a previous treatise (see WuK 9, 262-265, 1958) the authors reported on the effect of serveral chemicals on wood; the current work gives the result of their investigations of the effect of dry and moist heat on the same series of Indian woods that were the subjects of the previous investigations. Veneer test pieces of these woods were investigated, dry heat being obtained by inserting them in stoves heated to 100°C, and moist heat by insertion in steam heated, boiling water or steam jets at atmospheric pressure. The results are given in tables and illustrations. In accordance with results of other research, the authors find that the loss of strength due to heating in the stove is negligible but can reach considerable proportions with moist heat. Effects on various types of wood vary considerably.The experiments continue with the investigation of the simultaneous application of heat and load.
    Notes: In einer früheren Abhandlung (Werkstoffe u. Korrosion 9/1958/262/5) haben die Verfasser über die Wirkung einiger Chemikalien auf Holz berichtet, die vorliegende Arbeit gibt das Ergebnis ihrer Untersuchungen über die Wirkung von trockener und feuchter Hitze auf eine Reihe indischer Hölzer, die bereits Gegenstand der früheren Untersuchung waren, wieder. Untersucht wurden Furnierproben obiger Hölzer und zwar die Einwirkung trockener Hitze durch Einlegen dieser Furniere in einen auf 100°C erhitzten Ofen, die Einwirkung feuchter Hitze durch Einlegen in durch Dampf erhitztes kochendes Wasser oder durch Erhitzen im Dampfstrom bei Atmosphärendruck. Die Ergebnisse werden in Zahlentafeln und Abbildungen dargestellt. Die Verff. finden in Übereinstimmung mit den Resultaten anderer Forscher, daß der Festigkeitsverlust beim Erhitzen im Ofen zu vernachlässigen ist, dagegen bei feuchter Hitze ein beträchtliches Ausmaß annehmen kann. Die Wirkung ist bei den verschiedenen Holzarten sehr unterschiedlich.In Fortführung der Versuche wurde weiter die gleichzeitige Einwirkung von Hitze und Belastung studiert.
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    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 422-425 
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    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: New investigations on vapor phase inhibitorsIn connection to basic investigations on the protection against corrosion of metal surfaces by VPI, the authors tested the effects of some VPI upon the stability in storage of gray iron in air of 100 pct. relative humidity.Interpreting the results of different tests the authors accentuate the necessity of minimum quantities of VPI to achieve a protective effect.Tests with VPI impregnated wrapping paper in touch with the metal surface show that this method may be applied to cast iron also. Furthermore the effects of some VPI upon different metal surfaces at alternating temperatures were determined. The specimens, arranged in varying positions and different distances from the inhabitors, were subjected to transport conditions. The importance of these factors for the protective value of VPI is turned out.
    Notes: Im Anschluß an ihre Grundlagen-Forschungen auf dem Gebiete des Korrosionsschutzes metallischer Oberflächen durch Dampfphasen-Inhibitoren untersuchten die Verfasser die Wirkung einiger V. P. I. auf die Lagerbeständigkeit von Graugußteilen in Luft von 100% relativer Feuchtigkeit.Bei Auswertung der bei verschiedenen Untersuchungen erhaltenen Daten wird darauf hingewiesen, daß zum Schutz von Gußstücken ausreichende V. P. I.-Mengen vorhanden sein müssen.Bei Versuchen, bei denen die auf das Verpackungspapier aufgetragene V. P. I. mit den Metalloberflächen in Berührung standen, ergab sich, daß diese Schutzart auch bei Gußeisen anwendbar ist. Weiter wurde die Wirkung einiger V. P. I. gegenüber verschiedenartigen Metalloberflächen bei wechselnden Temperaturen quantitative ermittelt. Die der Einwirkung der V. P. I. ausgesetzten Prüflinge wurden in verschiedenen Lagen und Entfernungen vom Inhibitor exportiert; die Bedeutung dieser Faktoren für den Schutzwert der V. P. I. wurde deutlich herausgestellt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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