摘要
The modified molecular interaction volume model(M-MIVM)was used to calculate the activity values and their deviations from experimental data for Ag-Cu and Ag-Sb binary alloys.Subsequently,theoretical vapor-liquid equilibrium phase diagrams(T-x-y and p-x-y)were plotted via combining M-MIVM and vacuum theory.The vapor-liquid phase equilibrium(VLE)experiments were conducted on the Ag-Cu alloy at 1500-1560 K and 10-15 Pa and Ag-Sb alloys at 950-1350 K and 10 Pa.The results showed that the average relative deviation and average standard deviation of activity were lower than 5%and 0.02,respectively.A comparison of theoretical and experiment results for VLE revealed that the simulated data on the T-x-y diagram were well consistent with experimental values.Therefore,the VLE phase diagrams can serve as a guide in vacuum separation experiments and industrial production for Ag-Cu and Ag-Sb binary alloys.
采用修正分子相互作用体积模型(M-MIVM)计算银铜和银锑二元合金的活度预测值及其与实验值的偏差;利用M-MIVM和真空理论相结合绘制了其理论气液相平衡相图(T-x-y和p-x-y);开展了银铜合金在1500~1560 K、10~15 Pa条件下和银锑合金在950~1350 K、10 Pa条件下的气液相平衡(VLE)实验。结果表明,活度的平均相对偏差和平均标准偏差分别低于5%和0.02。VLE的理论和实验结果对比发现,T-x-y图中的理论数据与实验数据具有良好的一致性。因此,VLE相图可以为银铜和银锑二元合金的真空分离实验和工业生产提供指导。
基金
financially supported by the National Natural Science Foundation of China(No.52274352)。
