讨论了利用次正规溶体模型对二元平衡图进行热力学分析的一些结果,得出了各种典型复相平衡情况下溶体次正规性的判别式。计算表明,周期表第Ⅲ_B,Ⅳ_B,Ⅴ_B族各元素和Ge形成的溶液可以近似地用次正规模型描述;至少在化合物成分附近,Ga-As系统的溶液近似是正规的,In-Sb系统溶液是次正规的,并求出了它们相应的正规和次正规常数。从平衡图得到的次正规常数可以用来对溶液的热力学性质进行估算。
The application of the sub-regular solution model to the thermodynamical analysisof binary equilibrium diagrams has been discussed. A number of criterion-relations ofsub-regularity have been derived for different typical equilibrium cases. Calculationsshow that the solutions formed by the Ⅲ_B, Ⅳ_B, Ⅴ_B elements with Ge can be describedapproximately by the sub-regular solution model; the Ga-As melts in the region close tostoichiometry are nearly regular whereas the In-Sb melts are shown to be sub-regular. The constants of sub-regularity obtained can be used to calculate the thermodynamicquantities of the corresponding solutions.
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