溶融銅中の希薄亜鉛の活量におよぼすスズ添加の影響
1986 年 50 巻 5 号 p. 462-466
詳細
1986 年 50 巻 5 号 p. 462-466
The activity of Zn in liquid Cu-Zn-Sn ternary alloys has been measured by the use of isopiestic method at temperatures 1423 K and 1373 K and in the composition range, NZn<0.08 and NSn≤0.08, and the first and second order interaction parameters between Zn and Sn in molten Cu have been determined.
The activity of Zn in Cu-Zn binary liquid alloys is increased by the addition of a small amount of Sn. Thus, the interaction parameter, εZnSn, has a positive sign. The activity of Zn in Cu-Zn-Sn ternary liquid alloys is well expressed by a quadratic relation,
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oindentin the temperature and composition ranges studied in this investigation.
It has been demonstrated that the quadratic formalism proposed by Darken is also valid for Cu-Zn-Sn ternary liquid alloys in the composition range, NZn<0.08 and NSn≤0.06.
