THERMODYNAMIC PROPERTIES OF Cu-Ce-S AND Cu-Y-S LIQUID SOLUTIONS

Acta Metall Sin

1991, Vol. 27

Issue (4): 142-144 DOI:

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THERMODYNAMIC PROPERTIES OF Cu-Ce-S AND Cu-Y-S LIQUID SOLUTIONS

LI Guodong;DU Ting Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; Beijing

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LI Guodong;DU Ting Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; Beijing. THERMODYNAMIC PROPERTIES OF Cu-Ce-S AND Cu-Y-S LIQUID SOLUTIONS. Acta Metall Sin, 1991, 27(4): 142-144.

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Abstract The thermodynamic properties of Cu-Ce-S and Cu-Y-S liquid solutions werestudied by the chemical equilibrium technique at 1200℃. The equilibrium constants and thestandard free energies of CeS or YS formation were determined for the reactions CeS=[Ce]+[S]and YS=[Y]+[S]. For the solutions of Ce_((1)) and Y_((1)), in pure Cu according to the reactions:Ce_((1))=[Ce], and Y_((1))=[Y], the standard free energies of solutions were found. The first orderand second order interaction coefficients between solute elements as well as the activity coeffi-ciants γ_C~0 and γ_Y~0 in liquid Cu were also determined.

Key words: Cu-Ce-S systcm Cu-Y-S system thermodynamic property

Received: 18 April 1991

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1991/V27/I4/142

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