Fürtauer S, Tserenjav E, Yakymovych A, Flandorfer H
Department of Inorganic Chemistry/Materials Chemistry, University of Vienna, Währingerstraße 42, 1090 Vienna, Austria.
J Chem Thermodyn. 2013 Jun;61(100):105-116. doi: 10.1016/j.jct.2013.01.030.
Integral molar enthalpies of mixing were determined by drop calorimetry for Cu-Li-Sn at 1073 K along five sections / ≈ 1:1, / ≈ 2:3, / ≈ 1:4, / ≈ 1:1, and / ≈ 1:4. The integral and partial molar mixing enthalpies of Cu-Li and Li-Sn were measured at the same temperature, for Li-Sn in addition at 773 K. All binary data could be described by Redlich-Kister-polynomials. Cu-Li shows an endothermic mixing effect with a maximum in the integral molar mixing enthalpy of ∼5300 J · mol at = 0.5, Li-Sn an exothermic minimum of ∼ -37,000 J · mol at ∼ 0.2. For Li-Sn no significant temperature dependence between 773 K and 1073 K could be deduced. Our measured ternary data were fitted on the basis of an extended Redlich-Kister-Muggianu model for substitutional solutions. Additionally, a comparison of these results to the extrapolation model of Chou is given.
通过滴定量热法测定了1073 K下Cu-Li-Sn沿五个截面/≈1:1、/≈2:3、/≈1:4、/≈1:1和/≈1:4的混合积分摩尔焓。在相同温度下测量了Cu-Li和Li-Sn的积分和偏摩尔混合焓，对于Li-Sn还在773 K下进行了测量。所有二元数据都可用Redlich-Kister多项式描述。Cu-Li显示出吸热混合效应，在x = 0.5时积分摩尔混合焓最大约为5300 J·mol，Li-Sn在x ∼ 0.2时显示出放热最小值约为 -37000 J·mol。对于Li-Sn，在773 K和1073 K之间未推断出明显的温度依赖性。我们测量的三元数据基于扩展的Redlich-Kister-Muggianu替代溶液模型进行拟合。此外，还将这些结果与Chou的外推模型进行了比较。
