Relationship Between Activity Interaction Parameters in Fe-C System and Temperature  

作　　者：CHEN Er-bao LIU Mao-liu WANG Shi-jun 

机构地区：[1]School of Metallurgy and Materials, Anhui University of Technology, Ma'anshan 243002, Anhui, China [2]First Factory of Steelmaking and Rolling, Maranshan Iron and Steel Co Ltd, Maranshan 243000, Anhui, China

出　　处：《Journal of Iron and Steel Research International》2009年第2期11-16,共6页

基　　金：Item Sponsored by National Natural Science Foundation of China (50374002)

摘　　要：Carbon solubility in Fe-Mn melts （XFe =0. 102 3-0. 789 9, XMn =0. 055 1-0. 638 0） was measured experimentally at various temperatures. Using Gibbs-Duhem equation, in combination with the experimental results in this work, quoting experimental data reported in references, and by strict thermodynamic derivation and calculation, the relation equations between the activity interaction parameters in Fe-C system and temperature were obtained. The calculation equation of lnyFe. in Fe-C system was also obtained. The calculated results show that these relation equations can be used to calculate the activity coefficients of carbon and iron in Fe-C system and can satisfy the necessary condition to satisfy Gibbs-Duhem equation and the necessary condition to satisfy the stability condition of system at high carbon content. The calculation formula for lnTc in Fe-Mn-C system was also obtained.Carbon solubility in Fe-Mn melts （XFe =0. 102 3-0. 789 9, XMn =0. 055 1-0. 638 0） was measured experimentally at various temperatures. Using Gibbs-Duhem equation, in combination with the experimental results in this work, quoting experimental data reported in references, and by strict thermodynamic derivation and calculation, the relation equations between the activity interaction parameters in Fe-C system and temperature were obtained. The calculation equation of lnyFe. in Fe-C system was also obtained. The calculated results show that these relation equations can be used to calculate the activity coefficients of carbon and iron in Fe-C system and can satisfy the necessary condition to satisfy Gibbs-Duhem equation and the necessary condition to satisfy the stability condition of system at high carbon content. The calculation formula for lnTc in Fe-Mn-C system was also obtained.

关 键 词：Fe-C system activity interaction parameter activity coefficient CARBON 

分 类 号：O647.2[理学—物理化学] U675.79[理学—化学]