氧化铈在钢表面气相渗碳时的催化作用  

Catalytic Effect of Cerium Oxide on Carburization of Steel

作　　者：袁泽喜[1] 谭平[1] 余宗森[2] 徐庭栋[3] 

机构地区：[1]武汉冶金科技大学,湖北武汉430081 [2]北京科技大学,北京100083 [3]北京钢铁研究总院,北京100081

出　　处：《稀土》2001年第1期27-30,共4页Chinese Rare Earths

摘　　要：在 2 0钢气相渗碳时对比了渗剂中加入 Ce O2 或不加 Ce O2 时的渗碳动力学 ,发现在渗剂中加入 Ce O2可以显著加快渗碳速率。稀土催渗剂的效果在 85 0℃和 910℃基本相同。认为 Ce O2 加速渗碳的机制是催化。冶炼时在钢中加入的稀土对渗碳也起加速作用 ,但作用小于渗剂中的稀土。Comparing the kinetics of gas carburization of steel 20 with the carburization agent containing cerium oxide or without it,it is found that cerium oxide in carburant can accelerate carburizing process greatly,which almost has the same effect at 850℃ and 910℃.This effect is accomplished by catalyzing mechanism of cerium oxide.RE in steel can also accelerate carburizing process,but its effect is less than RE in carburant. RE in steel can improve the catalysis of RE in carburant.

关 键 词：钢 气相渗碳 氧化铈 催化作用 渗剂 

分 类 号：TG156.81[金属学及工艺—热处理]