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›› 2005, Vol. 5 ›› Issue (5): 529-531.

• 过程与工艺 • 上一篇    下一篇

Fe-C-N，Fe-C-V和Fe-C-V-N熔体活度相互作用系数

陈二保,王世俊,周云,宋宝国   

  1. 安徽工业大学冶金与材料学院
  • 出版日期:2005-10-20 发布日期:2005-10-20

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

CHEN Er-bao,WANG Shi-jun,ZHOU Yun,SONG Bao-guo   

  1. School of Metallurgy and Resource, Anhui University of Technology
  • Online:2005-10-20 Published:2005-10-20

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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, eCV=-11.96, eCV=-0.2443和eVN=-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

Abstract: 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 -lnXC-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: eCN=0.5016, eCV=-11.96, eCV=-0.2443 and eVN =-0.2379.

Key words: Fe-C-N melt, Fe-C-V-N melt, Fe-C-V melt, activity interaction coefficients