INTERACTION OF Ce AGAINST Cu, P OR Ti IN Fe-BASE SOLUTION
WANG Yuekui;DU Ting Central Iron and Steel Rasearch Institute; Ministry of Metallurgical Industry; Beijing professor;Department No.16;Central Iron and Steel Research Institute; Ministry of Metallurgical Industry;Beijing 100081
Cite this article:
WANG Yuekui;DU Ting Central Iron and Steel Rasearch Institute; Ministry of Metallurgical Industry; Beijing professor;Department No.16;Central Iron and Steel Research Institute; Ministry of Metallurgical Industry;Beijing 100081. INTERACTION OF Ce AGAINST Cu, P OR Ti IN Fe-BASE SOLUTION. Acta Metall Sin, 1990, 26(3): 150-152.
Abstract The equilibrium products of Fe-Cu-Ce, Fe-P-Ce or Fe-Ti-Ce solution have beenidentified to be Ce_2O_2S, but not the intermetallic compounds of Ce against Cu, P or Ti.The equilibrium constant of Ce_2O_2S=2[Ce]+[O]+2[S] and the interaction coefficients betweensolutes in Fe-base solution have been determined as follows: K_(Ce_2O_2S)=2.57×10~(-15) e_(Ce)~(Cu)=-0.49; e_(Ce)~P=1.77; e_(Ce)~(Ti)=-3.62 e_(Cu)~(Ce)=-0.22; e_P~(Ce)=0.39; e_(Ti)~(Ce)=-1.23 ε_(Ce)~(Cu)=-128.0; ε_(Ce)~P=224.1; ε_(Ce)~(Ti)=-710.0The Ce decreases the activities of Cu and Ti in Fe-base solution and increases their solubilities,as well as increases the activity of P and decreases its solubility.