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  • Wiley-Blackwell  (14,035)
  • American Institute of Physics (AIP)
  • 1955-1959  (14,035)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 412-415 
    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
    Additional Material: 2 Tab.
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  • 2
    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: Comparing Exposure Tests on the Corrosion Resistance of Passivated Galvanic zinc coatingsThe results of three years exposure tests on galvanic zinc coatings passivated by 15 different methods are given. The experiments were carried out under different conditions of climate: industry, urban, country and sea climate.There were big differences between the differently passivated coatings though generally a considerable increase of the corrosion resistance could be observed. The most effectfully passivating methods are named. Further result is that there is no good agreement between exposure and accelerated tests. The results show that the most intensive corrosion takes place in industrial climate and decreases in the order urban sea and country climate. It should be mentioned that fairly no dust will be deposited on some chromate coatings. Some coatings remained glittering for longer times, open, till the basic metal was corroded. A comparison of the resistances to corrosion of the differently passivated zinc coatings is given.
    Notes: Die Ergebnisse dreijähriger Feldversuche von galvanischen Zinküberzügen, die nach fünfzehn verschiedenen Verfahren passiviert worden waren, wurden bekanntgegeben. Die Versuche wurden unter verschiedenen Klimaverhältnissen: Industrie-, Stadt-, Land- und Seeklima, durchgeführt.Es wurde festgestellt, daß zwischen den in verschiedenen Bädern passiovierten Überzügen große Unterschiede bestehen in Bezug auf die Korrosionsbeständigkeit. In den meisten Fällen wurde eine bedeutende Verbesserung der Korrosions-beständigkeit beobachtet. Die Passivierungsbäder, welche die Korrosionsbeständigkeit der Zinküberzüge besonders steigern, wurden angegeben. Allgemein wurde festgestellt, daß nur ein loser Zusammenhang zwischen den Ergebnissen der Feld und Schnellversuche besteht. Die Ergebnisse zeigen, daß bei den passivierten Zinküberzügen die stärkste Korrosion im Industrieklima eintritt und dann in der Reihenfolge Stadt-, See-, und Landklima abnimmt. Man bemerkte auch, daß sich auf einigen Chromatüberzügen kaum Schmutz niederschlägt. Manche der Überzüge behielten ihren Glanz längere Zeit, oft bis zum Auftreten der Korrosion des Grundmetalls. Ein Vergleich der Korrosionsbeständigkeit der in verschiedenen Bädern passivierten Zinküberzügen wurde angegeben.
    Additional Material: 2 Ill.
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  • 3
    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 Electro Chemical Behavior of Bimetallic Electrodes and the Application of their Overpotential Curves in Corrosion ResearchA two phase electrode with local cells on its anodic and cathodic surfaces is put into an extern circuit. The polarization voltage depends on (a)the situation and size of the local cell surfaces,(b)the anodic and cathodic processes on the local electrodes,(c)the direction and the current density of the extern current and(d)the situation of the tip of the reference electrode in the solution.The facts nzcntioned above are the basis for an investigation of current doisity-voltage curves of electrodes which are corroded by local currents.
    Notes: Eine Zweiphasenelektrode mit Lokal-elementanbildung auf ihren Anoden-und Kathodenflächen wird in einem äußeren Stromkreis eingebaut; die Messung der Polarisationsspannung hängt ab von: (a)Lage und Größe der Lokalelementflächen(b)Anoden- und Kathodenvorgängen auf den Lokalelektroden(c)Richtung und Stärke des außen angelegten Stromes und(d)Lage des Abzapfpunktes der Bezugselektrode in der Lösung.Die Erörterung der Tatsachen bildet die Grundlage zur Untersuchung von Strom. Spannungskurven von Elektroden, die bei Korrosionsvorgängen durch Lokalströme erhalten werden.
    Additional Material: 7 Ill.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 9 (1958), S. 461-466 
    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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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 9 (1958), S. 455-460 
    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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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 9 (1958), S. 443-450 
    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 of Steel Pipes in Refinary Equipment by Sulfur Rich Crude OilThe crude oil of Nagylengyel contains five and six membered naphtene rings which are fused partly and heterocyclic compounds with sulfur, nitrogen resp. vanadium. The products of thermal decomposition of the crude oil and the overheated water vapor which is added to lower the partial pressure of the oil vapor attack the iron parts of the refinery severely. According to chemical and x-ray investigations the corrosion processes cause the formation of metal sulfides and sulfates as well as oxides of various degrees of oxidation. The corrosion products show differing structures according to the duration of corrosion. After some months there arc several plain covers of rust. After two years a peculiar structure of several layers appears which looks like finger prints. Under the cover the basic metal seems to be ribbed as by etching.The form of this noteworthy corrosion may be discerned by diffusion effects.
    Notes: Das Rohöl von Nagylengyel enthält Verbindungen, in welchen  -  z. T. kondensierte  -  fünf- oder sechsgliedrige Naphthenringe, außerdem Ringe mit Schwefel-, Stickstoff- bzw. Vanadin-Heteroatomen vorkommen. Bei der Verarbeitung des Rohöles greifen die therm. Zersetzungsprodukte und der  -  zwecks Erniedringung des Partialdruckes der Öldämpfe  -  eingeführte überhitzte Wasserdampf die Eisenteile der Raffinationsanlage stark an. Die Korrosionsvorgänge führen  -  nach den Daten der chem. und röntgenograph. Analyse der Korrosionsprodukte  -  zur Bildung von Metallsulfid und -sulfat-Verbindungen, ferner Metalloxyden verschiedener Oxydationsstufen.Die äußere Form und die mikrosk. Untersuchung zeigt, abhängend von der Zeitdauer der Korrosionswirkung, unterschiedliche Struktur. Bei paar Mon. Einwirkungsdauer sind mehrere glatte Rostschichten zu finden. Nach 2 Jhr. erscheint eine eigenartige „Fingerabdruck“ ähnliche, mehrschichtige Struktur. Unter dem gerippten Überzug scheint auch das Grundmetall durch Einätzung und Rippen unterteilt zu sein.Das Zustandekommen der bemerkenswerten Korrosionsformen kann mit Diffusionseffekten in Zusammenhang gebracht werden.
    Additional Material: 20 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 9 (1958), S. 467-470 
    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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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 9 (1958), S. 475-480 
    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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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 9 (1958), S. 481-487 
    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
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 9 (1958), S. 471-474 
    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
    Type of Medium: Electronic Resource
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