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Phase Equilibria of A~3B~5 Quinary Systems with an Elastically Strained Solid Phase

机译:具有弹性应变固相的A〜3B〜5五元体系的相平衡

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摘要

The contribution of the elastic component of the excess energy of mixing is determined for A~3B~5 quinary solid solutions. A relationship is derived for the activities of the components in an elastically strained solid phase of the quinary solid solutions. The correctness of the possible assumptions used in the calculation of the activity coefficients of the solid phase of a quinary solution is analyzed. The contact supercooling in the vicinity of the binary substrate isoperiods is calculated for a number of A~3B~5 quinary systems. It is shown that the negative contact supercoolings correspond to the thermodynamic instability boundaries of the quinary solid solutions.
机译:对于A〜3B〜5的五元固溶体,确定了混合多余能量中弹性成分的贡献。得出了在五元固溶体的弹性应变固相中各组分的活性的关系。分析了在计算五元溶液固相活度系数时可能使用的假设的正确性。对于许多A〜3B〜5的五元体系,计算了二元基质等值线附近的接触过冷。结果表明,负接触过冷对应于五元固溶体的热力学不稳定性边界。

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