Relationship Between Activity Interaction Parameters in Fe��C System and Temperature
CHEN Er��bao1,LIU Mao��liu2,WANG Shi��jun1
1. School of Metallurgy and Materials, Anhui University of Technology, Ma��anshan 243002, Anhui, China; 2. First Factory of Steelmaking and Rolling, Ma��anshan Iron and Steel Co Ltd, Ma��anshan 243000, Anhui, China
Relationship Between Activity Interaction Parameters in Fe��C System and Temperature
CHEN Er��bao1,LIU Mao��liu2,WANG Shi��jun1
1. School of Metallurgy and Materials, Anhui University of Technology, Ma��anshan 243002, Anhui, China; 2. First Factory of Steelmaking and Rolling, Ma��anshan Iron and Steel Co Ltd, Ma��anshan 243000, Anhui, China
ժҪ 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 ln��Fe 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 ln��C in Fe��Mn��C system was also obtained.
Abstract��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 ln��Fe 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 ln��C in Fe��Mn��C system was also obtained.
CHEN Er��bao;LIU Mao��liu;WANG Shi��jun. Relationship Between Activity Interaction Parameters in Fe��C System and Temperature[J]. �й������ڿ���, 2009, 16(2): 11-0.
CHEN Er��bao;LIU Mao��liu;WANG Shi��jun. Relationship Between Activity Interaction Parameters in Fe��C System and Temperature. Chinese Journal of Iron and Steel, 2009, 16(2): 11-0.
2009, Vol. 16 
