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用Ca与P合成的Ca_3P_2,在1600℃通过Ca_3P_2的分解,测定了纯Fe液中Ca-P平衡常数和活度相互作用系数,得到 K_(Ca_3P_2)=α_(Ca)~3·α_P~2=7.0×10~(-14) e_P~(Ca)=-3.1
Using Ca 3 P 2 synthesized from Ca and P, the equilibrium constants and activity coefficients of Ca-P in pure Fe solution were determined by the decomposition of Ca 3 P 2 at 1600 ℃, and the K_ (Ca_3P_2) = α_ (Ca) ~ 3 · α_P ~ 2 = 7.0 × 10 ~ (-14) e_P ~ (Ca) = - 3.1