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  • Polymer and Materials Science  (2)
  • Tl(1223)  (2)
  • Copper foil  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Dissolution of copper foil in aqueous solution ofpH=2 (1985)
    Springer
    Monatshefte für Chemie 116 (1985), S. 49-52 
    Details
    ISSN: 1434-4475
    Keywords: Copper foil ; Cuprite film ; Dissolution ; Flame AAS ; Rest potential
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurde die spezifische Auflösungsgeschwindigkeit (in mol cm−2s−1) und die zeitliche Veränderung des Restpotentials von Kupfer-Folie in einer belüfteten wäßrigen Lösung von pH 2,0 gemessen.
    Notes: Abstract The specific dissolution rate, expressed in mol cm−2s−1, and time-variation of the rest potential of copper foil in an aerated aqueous solution ofpH = 2.0 were measured.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00798278
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Methods to Produce Tl(1223) Tapes with Improved Properties (1998)
    Springer
    Journal of superconductivity 11 (1998), S. 23-26 
    Details
    ISSN: 1572-9605
    Keywords: Tl(1223) ; high-pressure synthesis ; superconducting tapes ; critical current density
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Different methods to prepare superconducting mono- and multifilamentary T1(I223) tapes were developed. High-purity ceramics could be produced by ex-situ or in-situ reaction under a high isostatic gas pressure. Tapes prepared by the PIT method and an in-situ reaction carried out close to the melting point of the oxide were relatively dense and textured. Interesting results were obtained for samples where part of the oxygen atoms in Tl(1223) had been substituted by fluorine. Critical current densities up to 20'000 A/cm2 (77 K, 0 T) were reached for tapes produced by the PIT method. Well textured samples were obtained by electrophoretic deposition, the deposited Tl(1223) grains being produced by a synthesis involving substantial melting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022657107312
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Preparation of High - Purity Tl(1223) Ceramics (1998)
    Springer
    Journal of superconductivity 11 (1998), S. 109-110 
    Details
    ISSN: 1572-9605
    Keywords: Tl(1223) ; high-pressure synthesis ; grain morphology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The influence of changes in the nominal composition and preparation conditions on the formation of Tl(1223) under a high isostatic gas pressure was studied. Optimization of the cation substitution allowed to increase the phase purity, whereas substitution of small amounts of oxygen by fluorine decreased the formation temperature of the Tl(1223) phase and extended the temperature range favorable for grain growth. A two-step reaction involving substantial melting produced well shaped, plate-like grains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022614820033
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Polymer-supported redox catalysts: Determination of apparent surface coverage (1983)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 21 (1983), S. 897-899 
    Details
    ISSN: 0360-6384
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1983.130211106
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    New polymer-supported catalysts. (Polyvinylchloride-containing redox) catalyst cyclopentadienyl iron moiety: [η5C5H5Feη6C6(CH3)5CH2—]+ (1983)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 21 (1983), S. 2057-2065 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: New polymer-supported catalysts that contain the redox cyclopentadienyl iron moiety [η5C5H5Feη6C6(CH3)5CH2—]+ were prepared with polyvinylchloride (PVC) as support. The active center is attached as a pendant organometallic moiety in the side groups of the PVC chain. Metallocenic groups and the supported polymers with various Fe content were analyzed by spectroscopic techniques and by polarographic and cyclic voltammetry. The absorption spectra show a similar profile to that of the nonsupported cation, which indicates that the supported polymer contains side groups in the chain with metallocenic structures. The new polymer-supported catalysts were characterized by viscometric measurements and by differential calorimetry (DSC). A linear relationship between intrinsic viscosity/[η] and the Fe content was observed. The glass transition temperature (Tg) values are higher than those of PVC without modification.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1983.170210716
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