9CrWMn钢复合TD盐浴渗铬的研究  

Research on Combined TD Chromizing of 9CrWMn Steel

作　　者：李爱农[1] 路鹏程[1] 赵玉宏 王华昌[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070 [2]广东亿龙电器股份有限公司,佛山528318

出　　处：《表面技术》2011年第3期29-31,共3页Surface Technology

基　　金：广东省教育部科技部企业科技特派员行动计划专项资助(2009B090600025)

摘　　要：对9CrWMn钢进行复合TD盐浴渗铬处理,即先固体氮碳共渗预处理,再盐浴渗铬。对比了复合渗和单一盐浴渗铬的渗层微观形貌,分析了渗层的相结构、显微硬度和耐磨性。研究表明,氮碳共渗预处理对TD盐浴渗铬的催渗效果明显,复合渗的渗层在厚度、截面硬度分布及耐磨性等方面均优于单一盐浴渗铬的渗层。该复合TD盐浴渗铬工艺可降低TD渗铬温度、缩短处理时间,具有重要应用价值。9CrWMn steel was treated by combined TD chromizing, first nitrocarburizing and then salt-bath chro- mizing. The microstructure of penetratings of TD chromizing and simplex one was combined. The phase structure, microhardness, wear resistance were analyzed. The results show that the nitrocarburizing pretreatment plays a positive role on TD salt bath chromizing. It enables to get thicker coating, well proportional hardness values and better wear resist ance than simplex TD salt bath chromizing. This combined process is beneficial to reduce TD chromizing temperature, shorten the processing period, and valuable for engineering application.

关 键 词：9CrWMn钢 复合TD渗铬 氮碳共渗预处理 盐浴渗铬 

分 类 号：TG156.88[金属学及工艺—热处理]