<正> As一向认为是钢铁中的有害元素。除少数耐腐蚀钢种外,脱As是钢铁冶炼的一个问题。欲脱As必先知As在铁液中的热力学行为。文献中只报道过As的活度相互作用系数e_(As)~C,e_(As)~S及e_(As)~N。本文是继续前文研究As在Fe液中的热力学行为,旨在利用下列反应: 3(CaC_2)+2[As]=(Ca_3As_2)+6[C] (1) 求出Fe-As-C-j熔体中的
Equilibrium experiments of iron melts containing As and saturated C with CaC_2-CaF_2 slag, which was saturated with CaC_2, were carried out under highly purified Ar atmosphere at 1350, 1425 and 1500℃. The free energy of the reaction 3(CaC_2)+2[As]=(Ca_3As_2)+6[C] is found to be △G°=-88150+29.80T(J), both As and Ca_3As_2 based on the infinitely dilute or 1% by weight solution standard. A plot of 1g fCα_3As_2 νS (%Ca_3As_2) gives values of the activity coefficient of Cα_3As_2. From the experimental equilibrium data of the quarternary system Fe-As-C-j where j=Si, Mn, P, values of 1g f_(As)~j can thus be evaluated. The interaction coefficients of the activity of As in iron melts e_(As)~j, are thus obtained as follow: e_(As)~(Si) e_(As)~(Mn) e_(As)~P 1350℃ 0.064 -0.035 0 1600℃ 0.057 -0.031 0
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| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | |
| [8] | |
| [9] | |
| [10] |
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