9Cr18不锈钢表面不同耐磨镀层的微观结构及耐磨性  

Microstructure and wear resistance of different wear resistant coatings on 9Cr18 stainless steel

作　　者：喻岚 汪镇涛 熊梧尧 潘鹤 黄鑫 王帅星[2] 唐华 杜楠[2] Yu Lan;Wang Zhentao;Xiong Wuyao;Pan He;Huang Xin;Wang Shuaixing;Tang Hua;Du Nan(AECC Guizhou Honglin Aero-engine Control Technology Co.Ltd.,Guiyang 550009,China;School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China;The Second Military Representative Office in Guiyang of Chengdu Military Representative Bureau of Air Force Equipment Department,Guiyang 550009,China)

机构地区：[1]中国航发贵州红林航空动力控制科技有限公司,贵州贵阳550009 [2]南昌航空大学材料科学与工程学院,江西南昌330063 [3]空军装备部驻成都地区军事代表局驻贵阳地区第二军事代表室,贵州贵阳550009

出　　处：《电镀与精饰》2023年第11期1-8,共8页Plating & Finishing

基　　金：中国航空发动机集团产学研合作项目(HFZL2020CXY026)。

摘　　要：针对9Cr18不锈钢的耐磨需求,选用硬铬镀层、Ni-P化学镀层、Ni-cBN/h BN复合镀层等3种镀层,通过扫描电镜、划痕法、球盘磨损试验等研究了其在微观结构、结合力、常温及高温耐磨性等方面的差异。结果表明,3种镀层的硬度均可达800 HV以上,但Ni-cBN/hBN复合镀层的硬度略高;经过预镀镍处理后Ni-cBN/hBN复合镀层与基体之间的结合强度高达68 MPa,但硬铬镀层与基体的结合力较差;Ni-P化学镀层和Ni-cBN/hBN复合镀层在常温下的耐磨性相当,但Ni-cBN/hBN复合镀层在200℃下的耐磨性略优;硬铬镀层在摩擦应力作用下涂层出现明显剥落、黏着磨损严重,耐磨性较差。Ni-cBN/hBN复合镀层更宜选作9Cr18不锈钢表面的耐磨镀层。In view of the wear resistance requirements of 9Cr18 stainless steel,hard chromium coating,Ni-P electroless coating and Ni-cBN/hBN composite coating were selected.The microstructure,adhesion,room temperature and high temperature wear resistance of three coatings were studied through scanning electronic microscope(SEM),scratch method and the ball-disk wear test.The results showed that the hardness of the three coatings can reach above 800 HV,but the hardness of Ni-cBN/hBN composite coating is slightly higher.After pre-plating nickel treatment,the adhesion between Ni-cBN/hBN composite coating and the matrix is up to 68 MPa,but the adhesion between hard chromium coating and the matrix is poor.The wear resistance of Ni-P electroless coating and Ni-cBN/hBN composite coating is equivalent at room temperature,but the wear resistance of Ni-cBN/hBN composite coating is slightly better at 200℃.The hard chromium coating has obvious peeling and serious adhesive wear under the action of friction stress,its wear resistance is poor.Ni-cBN/hBN composite coating is more suitable for the wear-resistant coating on the surface of 9Cr18 stainless steel.

关 键 词：9Cr18不锈钢 硬铬镀层 NI-P化学镀层 Ni-cBN/hBN复合镀层 耐磨性 

分 类 号：TG174.453[金属学及工艺—金属表面处理]