9Cr18不锈轴承钢渗硼层的组织特征与性能  

Microstructure and Properties of Borided 9Cr18 Martensitic Bearing Stainless Steel

作　　者：权思佳 宗晓明[1,2] 高飞 权超健[1] Quan Sijia;Zong Xiaoming;Gao Fei;Quan Chaojian(Luoyang Bearing Research Institute Co.,Ltd,Luoyang,Henan 471039;Department of Mechanical Engineering,Tsinghua University,Beijing 100084)

机构地区：[1]洛阳轴承研究所有限公司,河南洛阳471039 [2]清华大学机械工程系,北京100084

出　　处：《特钢技术》2020年第1期6-11,共6页Special Steel Technology

摘　　要：研究了9Cr18不锈轴承钢渗硼层的组织特征与性能,采用固态渗硼法在850、900、950和1050℃温度条件下,分别处理2、4、6和8 h制备渗硼层。研究结果表明材料表面可获得均匀致密的渗硼层,渗层的相组成主要是FeB、Fe2B和CrB,根据处理温度与保温时间的不同,渗层表面的硬度变化范围为1830~2140 HV,厚度变化范围为9.3~97.2μm。The microstructure and properties of borided 9Cr18 stainless bearing steel were studied,boriding treatment was conducted at temperatures of 850,900,950 and 1050℃for 2,4,6 and 8 h respectively by solid borid⁃ing method.The results showed that a uniform and dense boronizing layer can be obtained on the surface of the mate⁃rial.The phase composition of the boronizing layer is mainly FeB,Fe2B and CrB.According to the different treat⁃ment temperature and holding time,the hardness of the surface of the boronizing layer changed from 1830 to 2140 HV,and the thickness changes from 9.3 to 97.2μm.

关 键 词：轴承钢 渗硼技术 组织 性能 

分 类 号：TH133.3[机械工程—机械制造及自动化]