Ce对75Cr1钢洁净度、组织与耐点蚀性能的影响

孟泽, 李光强, 李腾飞, 郑庆, 曾斌, 刘昱

Effect of Ce on Cleanliness, Microstructure, and Pitting Corrosion Resistance of 75Cr1 Steel

MENG Ze, LI Guangqiang, LI Tengfei, ZHENG Qing, ZENG Bin, LIU Yu

表1 稀土夹杂物的标准生成Gibbs自由能[34]

Table 1 Standard Gibbs free energies of rare earth inclusions[34]

Equation ΔGθ / (J·mol-1) No. [Ce]+[O]+1/2[S]=1/2Ce2O2S(s) -675700+165.50T (1) [Ce]+3/2[O]=1/2Ce2O3(s) -714380+179.74T (2) [Ce]+Al2O3(s)=CeAlO3(s)+[Al] -423900+247.30T (3) [Ce]+[S]=CeS(s) -422100+120.38T (4) [Ce]+3/2[S]=1/2Ce2S3(s) -536420+163.86T (5) [Ce]+4/3[S]=1/3Ce3S4(s) -497670+146.30T (6)