【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。更多还原

【Abstract】 In MoSi2 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 Fe-C-N metal melt. This model shows that high carbon content in metal melt is beneficial to the denitrification.更多还原