| 含共晶体二元金属熔体作用浓度的计算模型 |
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| 引用本文： | 张鉴.含共晶体二元金属熔体作用浓度的计算模型[J].北京科技大学学报(英文版),1994(Z1). |
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| 作者姓名： | 张鉴 |
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| 作者单位： | 北京科技大学冶金系 |
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| 摘 要： | 根据混合自由能有最小值，过剩自由能有最大值（或最小值），激冷条件下产生化合物状亚稳相及共晶，分层等现象，针对Ｃｄ－Ｂｉ，Ｇｅ－Ａｌ，Ｂｉ－Ｓｎ，Ｃｄ－Ｓｎ，Ａｇ－Ｃｕ，Ａｌ－Ｇａ；Ｓｉ－Ａｇ，Ｐｂ－Ｓｎ和Ａｌ－Ｓｎ金属熔体推导了作用浓度的计算模型，计算结果与实测值符合较好，从而证明所提出的计算模型符合本类熔体的结构特点。
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| 关 键 词： | 活度，亚稳相，共晶，作用浓度 |
Calculating Models of Mass Action Concentrations of Binary Metallic Melts Involving Eutectic |
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| Zhang Jian.Calculating Models of Mass Action Concentrations of Binary Metallic Melts Involving Eutectic[J].Journal of University of Science and Technology Beijing,1994(Z1). |
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| Authors: | Zhang Jian |
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| Abstract: | Based on the appearance of minima of the free energy of mixing and maxima (or minima) of excess free energy, the formation of metastable compounds and eutectics during rapid solidification of metallic melts as well as the presence of miscibility gaps in the phase diagrams of a lot of binary alloys, calculating models of mass action concentrations for Cd-Bi,Ge-Al; Bi-Sn, Cd-Sn, Ag-Cu, Al-Ga; Si-Ag, Pb-Sn and Al-Sn binary metallic melts have been deduced. Good agreement between- the calculated and measured values shows that the calculating models reflect the structural characteristics of given metallic melts. |
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| Keywords: | activity metastable phase eutectic mass action concentration |
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