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Thermodynamic calculation of phase equilibria in the Cu-Mo-X (X: Er, Ni, Si, Th) ternary system

Abstract

铜钼合金由于具有高的导热导电性、低的热膨胀系数、特殊的高温性能、无磁性、低气体含量、良好的真空性能以及良好的加工性,在航空航天、汽车、电子等领域正得到日益广泛的应用。为了更有效的改进合金性能、优化合金成分与工艺选择,有必要掌握相图和热力学信息。本文基于计算相图的CALPHAD方法,对Cu-Mo-X(X:Ni,Si,Th,Er)四个三元系的相平衡进行了试验测定和热力学优化与计算,主要研究工作如下: (1)本文通过合金法实验测定了Cu-Mo-Ni三元系在1100℃、1200℃和1300℃以及Cu-Mo-Si三元系在1100℃和1200℃时的等温截面相图。 (2)基于相图计算的CALPHAD方法...The Cu-Mo base alloys have widely been used as automotive and electronic materials due to their high thermal and electrical conductivities, low coefficients of thermal expansion, special high-temperature performance, non-magnetic, low gas content, good vacuum and machining properties. In order to improve the alloy properties, optimize alloy compositions and processing, it’s necessary to investiga...学位:工学硕士院系专业:化学化工学院材料科学与工程系_材料学学号:20043602

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