Thermodynamic properties of equilibrium phases in the Ag-Cu-S system below 500 K: Experimental study

Fiseha Tesfaye, Pekka Taskinen

Forskningsoutput: Kapitel i bok/konferenshandlingKonferensbidragVetenskapligPeer review

1 Citeringar (Scopus)

Sammanfattning

Thermodynamics of the equilibrium phase assemblage Ag0.9Cu 1.1S-Cu2-xS-CuS have been studied by an EMF-method. The ternary phase was synthesized from the pure Cu2S and Ag2S in vacuum furnace at high-temperature and mixed with appropriate compositions of Cu2S and CuS to form the cathode electrode. The EMF-measurements were made on the solid-state galvanic cell Pt(-) | Ag | RbAg4I 5 | Ag0.9Cu1.1S-Cu2-xS-CuS | Pt(+), in a temperature range from 316 K to 498 K. Based on the measured EMF vs. T relations, thermodynamic functions (ΔfG°, Delta;fS° and Delta;fH°) of stromeyerite (Ag 0.9Cu1.1S) in equilibrium with Cu2-xS and CuS have been determined. The obtained experimental values have been compared with the available literature values. New experimentally determined thermodynamic properties of the solid solution (Ag,Cu)2Sss were determined.

OriginalspråkEngelska
Titel på gästpublikationEPD Congress 2014 - Held During TMS 2014 143rd Annual Meeting and Exhibition
FörlagMinerals, metals and materials society
Sidor185-194
Antal sidor10
ISBN (tryckt)9781118889763
DOI
StatusPublicerad - 2014
MoE-publikationstypA4 Artikel i en konferenspublikation
EvenemangEPD Congress 2014 - TMS 2014 143rd Annual Meeting and Exhibition - San Diego, CA, USA
Varaktighet: 16 feb 201420 feb 2014

Publikationsserier

NamnTMS Annual Meeting

Konferens

KonferensEPD Congress 2014 - TMS 2014 143rd Annual Meeting and Exhibition
Land/TerritoriumUSA
OrtSan Diego, CA
Period16/02/1420/02/14

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