(北京科技大学冶金系，北京 100083)
摘 要: 根据相图中出现包晶体、混合自由能和过剩自由能显负值等，分别对Ag-In，Au-Bi 和Au-Pb金属熔体制定了作用浓度计算模型。计算结果与实测值符合，从而证明计算模型可以反映相应金属熔体的结构本质，并证明大多数包晶体仍可存在于熔体中。
关键字: 包晶体 短程有序 作用浓度
（Department of Metallurgy, University of Science and Technology Beijing, Beijing 100083）
Abstract:Based on the appearance of peritectics, negative values of free energy of mixing and excess free energy etc., calculating models of mass action concentrations have been formulated for Ag-In, Au-Bi and Au-Pb melts respectively. Calculated results agreed well with measured values, which shows that the calculating models may reflect the structural characteristics of corresponding metallic melts and that many peritectics yet exist in mettallic melts.
Key words: peritectic short-range order mass action concentration
