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基于自由体积理论导出的超额构型熵和超额振动熵，结合 Ｍｉｅｄｅｍａ二元合金生成热模型，得出计算二元合金熔体活度的改进计算式，并对强相互作用体系，提出用校正因子来修正活度值的新方法该公式计算结果与实验值吻合良好。
Based on the excess configuration entropy derived from free volume theory and the excess vibration entropy, combined with the thermal model generated by Miedema binary alloy, an improved calculation formula for calculating the melt activity of binary alloy is obtained. For the strong interaction system, the correction factor A new method to correct the activity value The formula is in good agreement with the experimental data.