On the sintering of mixed and alloyed silver-palladium powders from chemical coprecipitation

J. C. Lin, W. Wu

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Silver-palladium alloy films were made by the thick-film technique using several metal powders prepared via chemical coprecipitation. Three types (mixed, alloyed and partially alloyed) of silver-15 wt.% palladium powders were investigated to compare their sintering behaviours. The mixed lots were fired to form a film in layers, incorporated with a cover of Ag-Pd alloy polycrystals on a silver matrix. The alloyed lots were fired by direct coalescence of the alloy particles to develop a simple alloy film. The partially alloyed powders were fired to obtain a film in the structure between those extremes. Based on X-ray diffractometry, thermogravimetry and sheet resistivity analyses, the layered structure made from mixed lots is mainly ascribed to diffusion of mobile silver towards palladium particles and towards alumina substrate during firing.

Original languageEnglish
Pages (from-to)110-118
Number of pages9
JournalMaterials Chemistry and Physics
Volume40
Issue number2
DOIs
StatePublished - Mar 1995

Keywords

  • Alloy films
  • Metallic powders
  • Silver-palladium thick films
  • Sintering

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