本文报告了CO气氛下,Fe-Ti-C及Fe-Si-Ti-C(si 1%)熔体中Ti与C溶解度的测定结果,并从TiC饱和吋的溶解度数据算出在C与TiC饱和及无C时铁液中Ti的活度系数.试验结果指出,不同温度下TiC与C饱和的铁液中Ti的浓度分别为:0.78%(1425℃),1.04%(1509℃)及1.47%(1590℃).铁液中含有1%的si并不显著影响Ti的溶解度.
The solubility of Ti and C in Fe-Ti-C and Fe-Si-Ti-C melts has been determined byequilibrating the molten metal with a graphite container under CO atmosphere in thetemperature range 1400℃ to 1600℃.It has been found from the experimental datathat linear relationships exist between log N_(Ti),log N_C~(Ti)or log N_C~(Ti,Si)and 1/T,and thatN_(Ti)is not appreciably affected by the presence of 1% Si,where the N's represent thecorresponding mole fractions in C-and TiC-saturated melts.On the basis of our solu-bility data,the activity coefficient of Ti in C-free and C-and TiC-saturated iron is cal-culated and a brief discussion is made with regard to the reduction of TiO_2 in thesmelting of Ti-containing iron ore.
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