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用银浴法在1450℃测定了两组Fe-C-Si合金熔体的等活度(α_(Si))数据,由此计算了活度交互作用系数ε_(Si)~C,ρ_(Si)~C及ρ_(Si)~(Si,C);用Gibbs-Duhem方程积分计算了Fe-C-Si三元熔体的碳的活度系数lnγ_C。
The isotherm (α_ (Si)) data of two groups of Fe-C-Si alloy melts were measured by the silver bath method at 1450 ℃. The interaction coefficients ε_ (Si) ~ C and ρ_ ) ~ C and ρ_ (Si) ~ (Si, C). The activity coefficient lnγ_C of carbon in Fe-C-Si ternary melts was calculated by Gibbs-Duhem equation.