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  • Wiley-Blackwell  (32)
  • 1985-1989  (27)
  • 1970-1974  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Einflüsse von Legierungselementen auf die Korrosion und Wasserstoffaufnahme von Eisen in Schwefelsäure - Teil II: Korrosion und DeckschichtbildungHerrn Professor Dr. rer. nat. Hans-Jürgen Engell zum 60. Geburtstag gewidmet (1985)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 36 (1985), S. 447-454 
    Details
    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: Effects of Alloying Elements on Corrosion and Hydrogen Uptake of Iron in Sulfuric Acid Part II: Corrosion and Formation of Surface LayersThe effects of C, S, P, Mn, Si, Cr, Ni, Sn and Cu on the formation of surface layer and hydrogen uptake of iron during corrosion in 1 M H2SO4/N2 were investigated using AES, XPS, SEM and electrochemical permeation techniques.Cu, Sn, P and C are enriched on the surface of iron during corrosion in H2SO4. Cu is enriched in the metallic form. P forms a phosphate and phosphide containing surface layer. Ni is not enriched. Cr is preferentially dissolved. Cu, Sn and Ni inhibit the dissolution of iron and thus decrease the hydrogen activity. S, P and Mn (MnS) increase the corrosion and hydrogen activity. Cr forms traps in iron which increase the hydrogen uptake.
    Notes: Die Einflüsse von C, S, P, Mn, Si, Cr, Ni, Sn und Cu auf Deckschichtbildung und Wasserstoffaufnahme bei Korrosion von Eisen in 1 M H2SO4/N2 wurden mit AES, XPS, REM sowie der elektrochemischen Permeationsmethode untersucht.Cu, Sn, P und C reichern sich bei Korrosion von Eisen in H2SO4 an der Oberfläche an. Cu bleibt metallisch liegen. P bildet eine phosphat-und phosphidhaltige Deckschicht. Ni reichert sich nicht an. Cr geht bevorzugt in Lösung. Cu, Sn und Ni hemmen die Eisenauflösung und erniedrigen die Wasserstoffaktivität. S, P und Mn (MnS) erhöhen die Korrosionsgeschwindigkeit und die Wasserstoffaktivität. Cr bildet Wasserstoffallen in Eisen, die die Wasserstoffaufnahme erhöhen.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19850361004
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of phosphorus on the stability of the passive state of Fe and Fe-Ni base glasses (1988)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 39 (1988), S. 453-462 
    Details
    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: Einfluß von Phosphor auf die Stabilität des passiven Zustands von metallischen Gläsern basierend auf Fe und Fe-NiFür metallische Gläser basierend auf Fe und Fe-Ni wurde der Einfluß einer Substitution von B durch P untersucht. Die elektrochemischen Messungen haben gezeigt, daß der Austausch von B gegen P die Bildung von Passivschichten begünstigt und deren passiven Bereich stabilisiert. Oberflächenanalytische Untersuchungen mittels AES ergaben, daß für die auf Fe-Ni basierenden Gläser die Hauptbestandteile der Passivschicht Eisenoxide, Phosphor-Sauerstoff Spezies (meistens Phosphate) und Boroxid waren, während Nickeloxid praktisch nicht auftrat. Bezüglich der Phosphorverbindungen in der Passivschicht auf dem metallischen Substrat konnte eine gewisse Ähnlichkeit festgestellt werden mit Phosphor, der auf einer (100) orientierten Fe Einkristalloberfläche durch Segregation bei erhöhter Probentemperatur angereichert und anschließend oxidiert worden war. Darüber hinaus lassen die Ergebnisse, in Übereinstimmung mit früheren Befunden für kristallines Fe, vermuten, daß Bestandteile des Elektrolyten in den Passivfilm auf dem glasartigen Substrat inkorporiert werden.
    Notes: The effects of substituting P for B in Fe base and Fe-Ni base glasses have been investigated. The electrochemical measurements have shown that a substitution of B by P increases the ability of the alloys to passivate and stability of their passive state. Surface analysis with AES revealed that for Fe-Ni base glasses the main constituents of the passive film were: iron oxides, phosphorus-oxygen species (mostly phosphates) and boron oxide whereas Ni oxides were depleted. There was a certain similarity between the Auger spectra for phosphorus in the passive film on the glassy substrate and for segregated, and subsequently oxidized, phosphorus on a (100) oriented Fe single crystal. The results suggest, moreover, in agreement with the previous findings for crystalline Fe that the electrolyte components are incorporated into the passivating film on glassy substrates.
    Additional Material: 23 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19880391003
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  • 3
    Electronic Resource
    Electronic Resource
    Notiz zum Problem des Substituentenaustausches bei der Grignard-Alkylierung von PhenylsilanenDie vorliegende Notiz ist als Diskussionsbeitrag zum Thema „Austauschreaktionen bei Organometallverbindungen“ gedacht. Das behandelte Problem wird von uns experimentell nicht weiter verfolgt. (1970)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 1302-1305 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19701030434
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  • 4
    Electronic Resource
    Electronic Resource
    Structure and dynamics of the high-temperature polymorph of trans-1,4-polybutadiene (1988)
    Basel : Wiley-Blackwell
    Die Makromolekulare Chemie, Rapid Communications 9 (1988), S. 107-114 
    Details
    ISSN: 0173-2803
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/marc.1988.030090211
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  • 5
    Electronic Resource
    Electronic Resource
    The net distribution of elements by element specific electron microscopy-ESI, 1. Morphological studies of polystyrene-block-poly(2-vinylpyridine) (1987)
    Basel : Wiley-Blackwell
    Die Makromolekulare Chemie, Rapid Communications 8 (1987), S. 401-410 
    Details
    ISSN: 0173-2803
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/marc.1987.030080807
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  • 6
    Electronic Resource
    Electronic Resource
    2H NMR spectroscopy on glassy polystyrene/poly(oxy-2,6-dimethyl-1,4-phenylene) blends (1989)
    Basel : Wiley-Blackwell
    Die Makromolekulare Chemie, Rapid Communications 10 (1989), S. 259-264 
    Details
    ISSN: 0173-2803
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/marc.1989.030100604
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  • 7
    Electronic Resource
    Electronic Resource
    Zur Identifizierung von Verunreinigungen im Poly(butylenterephthalat) (1988)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 39 (1988), S. 661-662 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1988.010391115
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  • 8
    Electronic Resource
    Electronic Resource
    Überlegungen zur industriellen Antibiotika-Produktion am Beispiel der Penicillin-FermentationVortrag von J. Möller auf der Sitzung des GVC-Fachausschusses „Bioverfahrenstechnik“, 6./7. Mai 1986 in Bamberg. (1987)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 59 (1987), S. 143-145 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330590215
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  • 9
    Electronic Resource
    Electronic Resource
    Melting, crystallization, and solution behavior of chain molecules with hydrocarbon and fluorocarbon segments (1988)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 189 (1988), S. 911-925 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Melting, crystallization, and solution behavior of n-alkanes with fluorocarbon segments of twelve carbon atoms on one end, F(CF2)12(CH2)nH, or on both ends, F(CF2)12(CH2)n(CF2)12F were investigated by DSC, MAS 13C NMR, light scattering, and birefringence studies. Both triblock F(CF2)m(CH2)n(CF2)mF and diblock F(CF2)12(CH2)nH compounds with 4 ≦ n ≦ 14 melt by a two-step process. In the first step, the alkyl segment conformations gain nearly liquid like trans/ gauche ratios, while the perfluorinated segments remain ordered. “Gels” which incorporate the entire solvent are formed by crystallization from even dilute solutions of hydrocarbon and fluorocarbon solvents. The gels are built up of extremely long, interdigitated needles of the pure solute. Due to the bilayer structures and different degrees of ordering of the hydrocarbon and the fluorocarbon segments, the crystals grow preferentially in the direction parallel to the lamellar surface. Light scattering experiments in octane demonstrated the formation of micelle type associates.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1988.021890422
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  • 10
    Electronic Resource
    Electronic Resource
    Formulation and solution of hierarchical finite element equations (1988)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 26 (1988), S. 1213-1233 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: The paper presents a general hierarchical formulation applicable to both elliptic and hyperbolic problems. Static and eigenvalue linear elastic problems as well as convection-diffusion problems are studied. The hierarchical formulation is well suited for adaptive procedures.For the convection-diffusion problem the hierarchical approximation is made in time only. Different hierarchical functions are proposed for different types of problems. Both weighted residual and least-squares formulations are applied. A combination of these two gives a penalty method with a constraint equation corresponding to the least-squares method. A whole class of time integration formulae is obtained. These are all suitable for adaptive procedures owing to the hierarchical approximation in the time domain. If a linear discontinuous hierarchical base function is used in the Galerkin weak formulation, the method so obtained corresponds to the discontinuous Galerkin method in time and is especially suited for convection dominated problems. The streamline-diffusion method is found to be the aforementioned penalty method.This paper also examines the sequence of nested equation systems that results from a hierarchical finite element formulation. Properties of these systems arising from static problems are investigated. The paper presents some new possibilities for iterative solution of hierarchic element equations, and different procedures are compared in a numerical example. Finally, a simple ID convection-diffusion problem clearly shows that the proposed hierarchical formulation in time gives a stable and accurate solution even for convection dominated flow.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620260514
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