Activity coefficient of AgO 0.5 in the PbO-SiO 2 melt at 1273 K

Shigeru Ueda, Tomomasa Kumagai, Katsunori Yamaguchi

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Abstract

Activity coefficient of AgO 0.5 in PbO-SiO 2 melt equilibrated with Ag-Pb alloy in an alumina or a magnesia crucible was investigated at 1273 K. A chemical equilibrium technique was applied to the measurement. The oxygen partial pressure was also measured by an EMF method. The activity coefficient of AgO 0.5 in the PbO-SiO 2 melt was derived. The addition of SiO 2 in the PbO melt decreases dissolution of Ag into the oxide phases. However, the activity coefficient of AgO 0.5 increases slightly with an increase in the concentration of SiO 2 in the PbO melt.

Original languageEnglish
Pages (from-to)1458-1462
Number of pages5
JournalMaterials Transactions
Volume48
Issue number6
DOIs
Publication statusPublished - 2007 Jun
Externally publishedYes

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Keywords

  • Activity coefficinet of AgO
  • PbO-SiO melt
  • Silver-lead alloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

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