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借助于铁—砷二元系的相图和资料,研究了下述问题:1.1600℃时Fe—As二元系中铁和砷的活度和活度系数;2.As_2O_3和AsCl_3标准生成自由能变量与温度的关系;3.真空冶金和真空处理时Fe—As二元系中砷的挥发系数。
Based on the phase diagrams and data of iron-arsenic binary system, the following problems were studied: 1. The activity and activity coefficients of iron and arsenic in Fe-As binary system at 1600 ℃; 2. The free energy variables of As_2O_3 and AsCl_3 standard And temperature; 3. Volatile coefficient of arsenic in Fe-As binary system during vacuum metallurgy and vacuum treatment.