Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 4    No. 3    September 1994

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THERMODYNAMICS OF Cu-Ce-M (M = Sn , Zn , Pb )LIQUID SOLUTIONS
Du Ting; Li Guodong

Central Iron and Steel Research Institute Ministry of Metallurgical Industry ; Beijing 100081

Abstract:The isoactivity of [Ce] of samples in multiple-hole graphite crucibles can be reached by con-trolling the equilibrium oxygen potential of the reaction 2[Ce]+ 3CO=Ce2O3 + 3C with C-CO.Using this principle and conjugate gradient method of solving illconditioned equations , the activi-ty interaction coefficients between Ce and Sn . Zn . Pb alloying elements were determined. The e-quilibrium constant of the reaction 2[Ce]+3[O]=Ce2O3 and the standard free energy of forma-tion of Ce2O3 in liquid Cu were obtained at 1200 ℃ .

 

Key words: Cu-Ce-M(M=Sn ; Zn ; Pb) liquid solutions thermodynamic properties

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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