Fe-C-N金属熔体作用浓度计算模型  

Computational Model of Action Concentration of Fe-C-N Metal Melt

作　　者：彭军[1] 王世俊[2] 董元篪[2] 刘丽霞[2] 周云[2] 陈二保[2] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]安徽工业大学冶金与资源学院,安徽马鞍山243002

出　　处：《钢铁研究学报》2008年第4期22-24,共3页Journal of Iron and Steel Research

基　　金：国家自然科学基金和上海宝钢集团公司联合资助项目(50674001)

摘　　要：实验在MoSi2电阻炉内用饱和浓度法测试了Fe-C-N体系氮的浓度和活度,并根据含化合物的金属熔体结构的共存理论模型,推导了Fe-C-N金属熔体作用浓度计算模型。实验测得1 485℃碳饱和的Fe-C-N熔体中在氮分压0.1 MPa时氮的溶解度为0.006 5%,并且计算的作用浓度与相应的实测活度相符合,从而证明所得模型可以反映Fe-C-N金属熔体的结构本质,由模型得出金属熔体高碳含量有利于脱氮。In MoSt2 high temperature furnace the concentration and activity of N in Fe-C-N system were measured, and according to the coexistent theory about metal melt structure containing compounds, the computational model of action concentration of Fe-C-N system is got. The experimental result shows that at 1 485 ℃ the nitrogen solubility in this carbon saturation melt is 0. 006 5% for nitrogen partial pressure of 0.1 MPa. The computed action concentration accords with the relevant measured activity, which proves that the model can express the structural quality of Fc-C-N metal melt. This model shows that high carbon content in metal melt is beneficial to the denitrification.

关 键 词：金属熔体 活度 共存理论 

分 类 号：TF031[冶金工程—冶金物理化学]