低温盐浴氮碳共渗304奥氏体不锈钢的结构与性能  

Microstructure and properties of 304 austenitic stainless steel treated by low temperature salt bath nitrocarburing

作　　者：付涛[1] 赵程[2] 罗厚杉[2] 曾群锋[3] 张永强[1] 刘聪[1] 

机构地区：[1]西安交通大学金属材料强度国家重点试验室,陕西西安710049 [2]青岛科技大学等离子体表面技术研究所,山东青岛266061 [3]西安交通大学现代设计及转子轴承系统教育部重点试验室,陕西西安710049

出　　处：《金属热处理》2011年第12期98-101,共4页Heat Treatment of Metals

基　　金：陕西省科技计划项目(2007K06-08);国家自然科学基金(50901058)

摘　　要：304奥氏体不锈钢经过450℃盐浴氮碳共渗4 h处理后,表面较为平滑,表层主要由含氮的S相组成;硬度达到约780 HV,耐磨性也大为提高。其抗均匀腐蚀性较差,但其抗点蚀能力优于抛光不锈钢。304 austenite stainless steel was treated by salt bath nitrocarburizing at 450 ℃ for 4 h.The treated surface is smooth,the surface layer is mainly composed of N containing S phase.The surface hardness is increased to about 780 HV,and the wear resistance is much increased.The treated sample has lower resistance to overall corrosion,but is more resistant to pitting corrosion than the polished sample.

关 键 词：不锈钢 氮碳共渗 硬度 耐磨性 耐蚀性 

分 类 号：TG156.8[金属学及工艺—热处理]