Thermodynamic study on the Ag-Pb-O system at 1273 K

Shigeru Ueda, Tomomasa Kumagai, Katsunori Yamaguchi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The phase relations for the Ag-Pb-O system saturated with alumina and the activity coefficient of AgO 0.5 in the PbO melt were investigated at 1273K. A chemical equilibrium technique and an EMF method were applied to the measurement. In this system, there is a miscibility gap between a molten Ag-Pb alloy phase and a Pb-Ag-O oxide phase. The solubility of Ag in the oxide phase and that of Pb in the metal phase were studied as a relation of the partial oxygen pressure. These results suggest that component of silver oxide in liquid PbO phase should be represented as AgO 0.5. The activity coefficient of AgO 0.5 in the PbO based oxide melt at infinite dilution relative to pure solid AgO 0.5 is 0.602 at 1273 K.

Original languageEnglish
Pages (from-to)1861-1864
Number of pages4
JournalMaterials Transactions
Volume46
Issue number8
DOIs
Publication statusPublished - 2005 Aug 1
Externally publishedYes

Keywords

  • Cupellation
  • Silver oxide
  • Silver-lead-oxygen system
  • Thermodynamics

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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