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Vol.27, No.10, 939 ~ 942, 1989
Title
Thermodynamics of the Sb - Sn - Cu Ternary System
전일현Ill Hyun Chon, 이용학Yong Hack Lee
Abstract
The antimony activities in liquid Sb-Sn-Cu at 1423 K were determined by using isothermal-isopiestic method. On the other hand, based on the antimony activities in the Sb-Sn-Cu system which has been determined from the present work, the tin and copper activities were calculacted by use of the method proposed by Schuhmonn. The results are summarized as follows 1) The antimony activity exhibits negative deviation from Roultian behavior. 2) Liquid Sb-Sn-Cu system present regular solution behavior in an minute error. 3) The activity coefficients of tin and copper at infinite dilution in molten antimony at 1423 K are as follows lnγ_(sn)(X_(sn), X_(cu)) = ln 0.57 + 1.0X_(sn) + 1.25X_(cu), lnγ_cu(X_(cu) X_(sn)) = ln 0.41 + 1.2X_(cu) + 1.25X_(sn)
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