渗碳气体对201奥氏体不锈钢低温离子渗碳效果的影响  

Effect of Carburizing Gases on Low Temperature Plasma Carburization of 201 Austenitic Stainless Steel

作　　者：王宇[1,2] 赵程[1,2] 

机构地区：[1]青岛科技大学机电工程学院 [2]青岛科技大学表面技术研究所,山东青岛266061

出　　处：《青岛科技大学学报（自然科学版）》2012年第4期413-416,共4页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：山东省自然科学基金项目(ZR2010EM018)

摘　　要：用不同的渗碳气体对201奥氏体不锈钢进行了低温离子渗碳(DCPC)处理。实验证明,甲烷和乙炔均可在不锈钢表面形成一层无碳化铬析出的碳的过饱和固溶体(Sc相),使其表面的硬度和耐蚀性均有较大幅度的提高。但用甲烷作为渗碳气体处理的不锈钢表面有一层黑膜,破坏了不锈钢原有的光泽;而用乙炔作为渗碳气体不仅可以获得较为光亮的表面色泽,同时其硬度和耐蚀性也有进一步的提高。The low temperature plasma carburization （DCPC） of 201 austenitic stainless steel has been done by using different carburizing gases. The results show that CH4 and C2 H2 can form a layer of carbon supersaturated solid solution （i. e. the Sc phase） on the steel surface without chromium carbide precipitation, so the surface hardness and corro- sion resistance are greatly improved. But a layer of black film will form on the metal surface when CH4 is used as carburizing gases, which will destroy the original luster of stainless steel, when C2 H2 is used as carburizing gases, not only bright surface luster can be obtained, but also the hardness and corrosion resistance can be greatly improved.

关 键 词：201奥氏体不锈钢 低温离子渗碳 渗碳气体 硬度 耐蚀性 

分 类 号：TG156.8[金属学及工艺—热处理]