Mn基体系热力学性质与温度关系的研究  

Study on relations between thermodynamical properties in Mn -based systems and temperature

作　　者：陈二保[1] 

机构地区：[1]安徽工业大学冶金与材料学院,安徽马鞍山243002

出　　处：《安徽工业大学学报（自然科学版）》2003年第4期273-277,共5页Journal of Anhui University of Technology（Natural Science）

基　　金：国家自然科学基金资助项目(59774015)

摘　　要：实验测定了不同温度时C在Mn-Fe熔体中的溶解度。Mn-Fe熔体从纯Fe到纯Mn的整个浓度范围内C溶解度计算式为XC=0.6321e(-1413.6/T)-0.1001XFe。通过热力学推导和计算,获得Mn基体系热力学性质与温度的关系式为:1)Mn-C系,lgXbC=-613.8/T-0.1992,ΔG珚ΘC=26717-57.45T(J/mol),lnγ0C=3213.5/T-3.7905,εCC=9883/T+5.7773,eCC=222/T+0.0494;2)Mn-Fe-C系,εFeC=582/T+0.0204,εFeC=1776/T+0.4760和eFeC=8.3134/T+0.0018。The solubility of carbon in Mn -Fe me lts was measured experimently at 1350,1375,1425,1450℃.The solubility of carbon in Mn -Fe melts(from pure Mn to pure Fe)can be calculated with following formula:X C =0.6321e (-1413.6/T) -0.1001X Fe .By thermodynamical derivation and calculation,some relations between thermo-dynamical properties in Mn -based sy stems and temperature were obtained as follows:1)in Mn -C systems,lnγ 0C =3213.5/T-3.7905,ε C C =9883/T+5.7773,e C C =222/T+0.0494,lgX b C =-613.8/T-0.1992,ΔG ΘC =26717-57.45T(J /mol);2)in Mn -Fe -C systems,ε Fe C =582/T+0.0204,ε Fe C =1776/T+0.4760and e Fe C =8.3134/T+0.0018.

关 键 词：Mn基体系 热力学性质 活度相互作用系数 温度 MN-FE熔体 高炉 脱Si 脱P 

分 类 号：TF762.8[冶金工程—钢铁冶金]