WANG Yuekui DU Ting Central Iron and Steel Research Institute
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Ministry of Metallurgical Industry
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Beijing
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China
金属学报(英文版)
The equilibrium product in Fe-Cu-Ce,Fe-P-Ce or Fe-Ti-Ce solution have ben Mentified to be Ce_2O_2S,but not the intermetallic compounds of Ce against Cu,P or Ti.The equilibrium eonstant of Ce_2O_2S=2[Ce]+2[O]+[S] and the interaction coefficients between solutes in Fe-base solution have been determined as follows: K_(Ce_2O_2S)=2.57×10~(-5) 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)=-710.0 Ce decreases the activities of Cu and Ti in Fe-base solution and increases their solubifities,as well as increases the activity of P and decreases its solubility.
关键词:
Fe-base solution
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王跃奎
,
杜挺
金属学报
Fe-Cu-Ce,Fe-P-Ce和Fe-Ti-Ce溶液的平衡产物是Ce_2O_2S,而不是Ce与Cu、P、Ti的金属间化合物。测定了Fe液中Ce_2O_2S=2[Ce]+[O]+2[S]反应的平衡常数和溶质之间的相互作用系数。Ce降低Cu和Ti在Fe液中的活度,增大其溶解度,同时增大P的活度,降低其溶解度。
关键词:
铁液
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Ce
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Cu
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P
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Ti
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interaction
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oxygen activity
