硫碳氮共渗及稀土的作用  

Sulpho carbonitriding Kinetics and Effect of Rare Earth Elements

作　　者：任慧平[1] 刘宗昌[1] 牛松圃 

机构地区：[1]包头钢铁学院 [2]包头钢铁公司

出　　处：《金属热处理》1997年第2期7-9,20,共4页Heat Treatment of Metals

摘　　要：在渗剂中不加稀土和加入不同量稀土的条件下，对３Ｃｒ２Ｗ８Ｖ钢进行了硫碳氮共渗试验。用金相法和显微硬度法测定了硫碳氮共渗动力学曲线。利用二次离子质谱仪和Ｘ射线光电子能谱仪，对稀土在试样表面分布与存在状态进行了研究。结果表明，适量稀土对硫碳氮共渗具有明显的催渗作用；稀土能渗入钢中，渗入试样表面的稀土以氧化物和固溶态的形式存在；稀土通过促进碳氮硫原子在表面的吸附及破坏表面氧化层，清洁界面。This paper deals with the study on sulpho carbonitriding kinetics of 3Cr2W8V steel without RE elements and with RE elements The kinetics curves of sulpho carbonitriding were determined by metallography and micro hardness analysis By means of SIMS and XPS,the surface of sample was analyzed The results show that catalysis effect of RE elemednts is obvious RE,infiltrating into the surface layer of sample,is in the oxide and atomic state RE increases sulpho carbonitriding process by breaking the oxide layer of sample

关 键 词：稀土 硫碳氮共渗 催渗 

分 类 号：TG156.8[金属学及工艺—热处理]