SiAl、SiBa和AlBa二元合金熔体组元活度的计算

钢铁研究学报, 2007, 19(6): 26-0.

SiAl、SiBa和AlBa二元合金熔体组元活度的计算

戴年建 , 姜周华 , 李阳 , 刘杨 , 梁连科

东北大学材料与冶金学院, 辽宁沈阳 110004

School of Materials and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China

关键词：含钡合金;合金熔体;Miedema模型;活度;热力学数据

Calculation of Component Activities in SiAl, SiBa and AlBa Binary Alloy Melts

DAI Nianjian , JIANG Zhouhua , LI Yang , LIU Yang , LIANG Lianke

Keywords： barium bearing alloy;alloy melt;Miedema model;activity;thermodynamic data

根据Miedema二元合金生成热模型，结合相关热力学数据，对硅钙钡系中的各二元合金在1 873 K下的活度进行计算。结果表明，采用该模型对SiAl合金活度的计算结果与实测结果吻合较好；并对SiBa和AlBa合金熔体1 873 K下各组元的活度进行了计算，为含钡合金的成分设计和生产提供理论依据。

Based on the Miedema model for calculating the formation heat of binary alloy system, activity of each binary system in SiAlBa alloy system at 1873K was calculated combining the relative thermodynamics data. The results show that the activity calculation results of SiAl alloy are in good agreement with the experimental data using the Miedema model. The activity of SiBa and AlBa binary system are also calculated to provide the theory for the alloy design and production of barium bearing alloys.

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