Solubilities of calcium in liquid calcium chloride in equilibrium with calcium-copper alloys
Solubilities of calcium in liquid calcium chloride in equilibrium with calcium-copper alloys
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DOI：
10.1021/j100716a009
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发表时间：
1970-10
期刊：
影响因子：
--
通讯作者：
Ram A. Sharma
中科院分区：
文献类型：
--
作者：
Ram A. Sharma
The solubilities of calcium in liquid calcium chloride in equilibrium with liquid Ca-Cu alloys were measured by determining the calcium content of the chloride in the temperature range 800-925. Relative partial molar enthalpy and excess partial molar entropy of solution of calcium in liquid calcium chloride were found to be about 10 kcal mol-1 and 1.5 cal deg-1 mol-1, respectively. From the activities of calcium in Ca-Cu alloys that were calculated from the solubilities of calcium in CaCl2 and compared with the activities of calcium in Ca-Zn alloys and of magnesium in Mg-Zn and Mg-Cu alloys, it appears that calcium dissolves either by the reaction Ca+ Ca2+<= t 2Ca+ or Ca<= t Ca2++ 2e-. The calcium activities so calculated were used to derive the activities of copper in liquid Ca-Cu alloys at 1150 K. The relative partial molar and integral molar free energies of mixing for liquid Ca-Cu alloys were also calculated at this temperature.
