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Article
Correlation of Subsolidus Phase Relations in the AgPdO System to Oxidation Reduction Kinetics and Dilametric Behavior
Journal of the American Ceramic Society
  • Sea-Fue Wang
  • Wayne Huebner, Missouri University of Science and Technology
  • Chi-Yen Huang
Abstract

The relationship between the equilibrium subsolidus phase diagram of the Ag─Pd─O2 system, and the oxidation/reduction kinetics and microstructure development of 70Ag/30Pd coprecipitated and alloyed powders is presented. For the same Ag/Pd ratio and similar powder characteristics, the onset temperatures of Pd oxidation and PdO reduction for coprecipitated powders are lower than those of alloyed powders. For Ag/Pd alloyed powders, complete oxidation of Pd does not occur, because of kinetic limitations and the equilibrium phases present at high temperatures. Significant differences in microstructural evolution were observed and correlated to the oxidation processes and densification kinetics. the impact of these results on the use of the Ag/Pd system as conductors is discussed.

Department(s)
Materials Science and Engineering
Keywords and Phrases
  • Silver,
  • Palladium,
  • Oxygen,
  • Reduction-Oxidation,
  • Dilatometry
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 1992 Wiley-Blackwell, All rights reserved.
Publication Date
8-1-1992
Citation Information
Sea-Fue Wang, Wayne Huebner and Chi-Yen Huang. "Correlation of Subsolidus Phase Relations in the AgPdO System to Oxidation Reduction Kinetics and Dilametric Behavior" Journal of the American Ceramic Society (1992)
Available at: http://works.bepress.com/wayne-huebner/7/