在钼丝炉内用溶解度法研究1300—1600℃范围内Ce,Y,La,Nd,Sm对碳在Fe中溶解度的影响;与碳的相互作用系数与温度关系;在铁液中生成CeC_2,YC_2,LaC_2,IqdC_2,SmC_2的反应平衡常数、标准生成自由能与温度关系;并绘制了铁液中[RE]-[C]平衡图。
The influence of rare earth elements on carbon solubility, interaction coefficients as well as equilibrium constants of REC_2 formation in liquid iron were investigated at. 1300, 1400, 1500 and 1600℃. Ce, Y, La, Nd and Sm may increase the solubility of C in liquid iron. The temperature dependences of interaction coefficients between rare earth elements and carbon in either carbon saturated or dilute liquid iron were estimated. It has been proved that various REC_2 are formed in liquid iron under observation of metallography and SEM. The temperature dependences of the equilibrium constants of the reactions of REC_2 formation and the standard free energy of formations of REC_2 in liquid iron were also determined. Five equilibrium diagrams of rare earth elements and carbon have been drawn.
参考文献
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| [5] | 吴夜明,杜挺.钢铁研究总院学报,1983 |
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