渗氮处理对SLD钢表面CrTiAlN涂层组织与性能的影响  

Effect of nitriding treatment on microstructure and properties of CrTiAlN coating on SLD steel surface

作　　者：何玉龙 赵毅红[1] 沈国华[2] 陈荣发[1] 周晓进 王自力 王锴 史敏杰 HE Yu-long;ZHAO Yi-hong;SHEN Guo-hua;CHEN Rong-fa;ZHOU Xiao-jin;WANG Zi-li;WANG Kai;SHI Min-jie(School of Mechanical Engineering,Yangzhou University,Yangzhou 225000,China;Jiangsu Water Conservancy Survey,Design and Research Institute Co Ltd,Yangzhou 225000,China;Yangzhou Panfeng Network Technology Co Ltd,Yangzhou 225000,China)

机构地区：[1]扬州大学机械工程学院,江苏扬州225000 [2]江苏省水利勘测设计研究院有限公司,江苏扬州225000 [3]扬州攀峰网络科技有限公司,江苏扬州225000

出　　处：《材料热处理学报》2021年第7期106-112,共7页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(51872254);扬州市校合作专项(YZ2019129);扬州市邗江区科技计划项目(HJM2019006)。

摘　　要：采用多弧离子镀在SLD钢表面制备CrTiAlN涂层。利用扫描电镜(SEM)、原子力显微镜(AFM)、X射线衍射仪(XRD)、划痕仪和摩擦磨损试验机等研究渗氮处理对SLD钢表面CrTiAlN涂层的组织结构、力学性能和摩擦磨损性能的影响。结果表明,未经渗氮处理的SLD钢表面CrTiAlN涂层的微凸体较多,CrN相以(200)晶面生长,涂层显微硬度为2423 HV0.01。渗氮后,CrN相以(111)晶面择优生长且晶粒更加细小,涂层显微硬度提升24%,磨损机理以磨粒磨损、黏着磨损为主,磨损率下降。CrTiAlN coating was deposited on SLD steel surface by multi arc ion plating. The effects of nitriding treatment on microstructure, mechanical properties and friction and wear properties of the CrTiAlN coating on SLD steel surface were investigated by means of scanning electron microscopy(SEM), atomic force microscopy(AFM), X-ray diffraction(XRD), scratch tester and friction and wear tester. The results show that the CrTiAlN coating on the surface of the SLD steel without nitriding treatment has more asperities, the CRN phase grows in(200) crystal plane, and the microhardness of the coating is 2423 HV0.01. After nitriding, the CRN phase grows preferentially on(111) crystal plane and the grains are finer, the microhardness of the CrTiAlN coating increases by 24%, the wear mechanism is mainly abrasive wear and adhesive wear, and the wear rate decreases.

关 键 词：SLD钢 渗氮处理 CrTiAlN涂层 摩擦磨损 

分 类 号：TG174.44[金属学及工艺—金属表面处理]