Thermodynamic Assessment of Interaction Relation between Lanthanum and Constituent Elements in Sn-Pb Alloy

稀土学报(英文版), 2001, 19(2): 107-109.

1.. National Key Laboratory of Welding, Harbin Institute of Technology,

2.National Key Laboratory of Welding, Harbin Institute of Technology;National Key Laboratory of Reliability Physics of Electronic Product, Ministry of Information Industry

3.National Key Laboratory of Welding, Harbin Institute of Technology,

4.Department of Mechanical Engineering, Hiroshima University, Higashi-Hiroshima 739,

基金项目: Harbin Science and Technology Project(9911211006) Science and Technology Foudation for Mechanical Enginddring Scholars(97JF0022)

Thermodynamic Assessment of Interaction Relation between Lanthanum and Constituent Elements in Sn-Pb Alloy

The interaction relation between lanthanum and the constituent elements of Sn-Pb alloy system was analyzed by using the thermodynamic models including Miedema formation energy model for binary system, Tanaka modification by excess entropy and the Chou geometric model for ternary system. The thermodynamic calculaton results show that lanthanum has higher affinity for Sn in the Sn-Pb system. This is an important foundation for the improvement of the metallurgical properties of Sn-Pb solder alloy by adding rare earth elements.

参考文献

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Thermodynamic Assessment of Interaction Relation between Lanthanum and Constituent Elements in Sn-Pb Alloy

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