Thermodynamic properties of Ag-Pt alloy measured using a solid electrochemical method

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • Bandung Institute of Technology

Abstract

AlthoughAg-Pt system is crucial for several technological applications, investigations of the thermodynamic properties of this system are limited. In the present study, activity of silver at various temperatures in the platinum rich solid solution was measured by a solid electrochemical method and employing AgI as the solid electrolyte. The EMF was determined using a galvanic cell (–)|Ag|AgI|Ag – Pt alloy|C|Pt(+), which provided novel experimental data on thermodynamic properties of aAg-Pt alloy.Activity, partial molar of Gibbs energy, enthalpy and entropy of silver in a solid solution containing 1 at % Ag between 573 and 673 K have been calculated. The results indicated that the activity of silver obtained in the present study shows a large positive deviation from the ideal Raoultian behavior. Microstructures of alloys with different compositions were also compared.

Details

Original languageEnglish
Pages (from-to)191-197
Number of pages7
JournalArchives of Metallurgy and Materials
Volume63
Issue number1
Publication statusPublished - 1 Jan 2018
MoE publication typeA1 Journal article-refereed

    Research areas

  • EMF method, Platinum, Silver, Silver conducting electrolyte, Thermodynamics

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