应用Ba蒸气平衡法,在密封Mo反应室内,用自制的TiN和BaS坩埚,进行了纯Fe液中Ba—O,Ba—S,Ba—P平衡的研究。得到反应:BaO_(s)=[Ba]+[O]的标准自由能ΔG°_(wt-%)=188500+38.3T J/mol,e_O~(Ba)=624-1.25×10~6/TBaS_(S)=[Ba]+[S]的标准自由能ΔG°_(wt-%)=469100-111T J/mol,e_S~(Ba)=826-1.64×10~6/T1873K下,反应Ba_3P_2=3[Ba]+2[P]的K_(Ba_3P_2)=7.76×10~(-18),e_(Ba)~P=0.95,ΔG°_(wt-%)=613200 J/mol。
Study was made of the equilibrium of Ba-O, Ba-S and Ba-P in molten Fe byusing of Ba vapour-liquid Fe system sealed in Mo chamber. Their thermodynamicparameters determined are: △G_(BaO)~o= 188500+38.3T J/mol, e_O~(Ba)=624-1.25×10~6 / T IgK_(BaO)=-2.00-9849 / T △G_(BaS)~o= 469100-111T J/mol, e_S~(Ba)=826-1.64×10~6 / T IgK_(BaS)=5.80-24516 / TAt 1873K, K_(Ba_3P_2)=7.76×10~(-18), e_(Ba)~P=-0.95, AG_(Ba_3P_2)~0=613200 J / mol
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