Fe-C-N,Fe-C-V 和 Fe-C-V-N 熔体活度相互作用系数  

Activity Interaction Coefficients in Fe-C-N, Fe-C-V and Fe-C-V-N Melts

作　　者：陈二保[1] 王世俊[1] 周云[1] 吴宝国[1] 

机构地区：[1]安徽工业大学冶金与资源学院,安徽马鞍山243002

出　　处：《过程工程学报》2005年第5期529-531,共3页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:50374002)

摘　　要：实验测定了1435℃温度下C和N在Fe-C-N和Fe-C-V-N熔体中的饱和溶解度.Fe-C-V熔体中C的饱和溶解度计算式为XC=0.2043+0.8365XV或-lnXC-9.683XC=-11.96XV-0.3916.C和N在Fe-C-V-N熔体中的饱和溶解度随V浓度增加而增加.根据Fe-C熔体的热力学性质、Fe-C-N熔体中C和N之间的活度相互作用系数、C在Fe-C-V熔体中及C和N在Fe-C-N和Fe-C-V-N熔体中的饱和溶解度,通过严格的热力学推导和计算,获得了Fe-C-N熔体中C和N之间、Fe-C-V熔体中C和V之间及Fe-C-V-N熔体中V与N之间的活度相互作用系数:eCN=0.5016,εVC=-11.96,eCV=-0.2443和eVN=-0.2379.The saturated solubility of carbon and nitrogen in Fe-C-N and Fe-C-V-N melts was measured experimentally at 1435℃. The purpose of present work is to obtain the activity interaction coefficients between solute components in these melts. The saturated solubility of carbon in Fe-C-V melt can be calculated with the following formula： Xc=0.2043＋0.8365Xv or -InXc-9.683Xc=-11.96Xv- 0.3916. The saturated solubility of carbon and nitrogen in Fe-C-V-N melt increases with increasing vanadium concentration. According to the thermodynamic properties of Fe-C melt, the activity interaction coefficients between carbon and nitrogen in Fe-C-N melt, the saturated solubility of carbon in Fe-C-V melt as well as the saturated solubility of carbon and nitrogen in Fe-C-N and Fe-C-V-N melts, by strictly thermodynamic derivation and calculation the activity interaction coefficients between carbon and nitrogen in Fe-C-N melt, between carbon and vanadium in Fe-C-V melt as well as between vanadium and nitrogen in Fe-C-V-N melt were obtained as follows：e^CN0.5016,ε^CV=-11.96,e^CV=-0.2443 and e^VN=-0.2379.

关 键 词：Fe-C-N熔体 Fe-C-V-N熔体 Fe-C-V熔体 活度相互作用系数 

分 类 号：TF762.8[冶金工程—钢铁冶金]