毛鹏展¹，吴燕明¹，陈小明¹，黄迅雷¹ ，梅华锋¹，周夏凉^,2，马红海³
1. 水利部产品质量标准研究所，浙江杭州 310012；2. 水利部杭州机械设计研究所，浙江杭州 310012；
3.杭州江河机电装备工程有限公司，浙江杭州 310012

　　摘  要：采用超音速火焰（HVOF）热喷涂工艺，在ZG06Cr13Ni54Mo不锈钢上制备了纳米WC-10Co-4Cr涂层，利用压痕法和灰度法分别测试了涂层的显微硬度和孔隙率，并利用X射线衍射仪（XRD）、扫描电子显微镜（SEM）、电子万能试验机和磨蚀试验机分别对涂层的相结构、表面形貌、结合强度和抗磨蚀性能进行了分析和测试。结果表明：获得的WC-10Co-4Cr涂层的平均显微硬度和结合强度高，分别达到1435Hv0.2和70.4MPa,组织结构致密。相对于ZG06Cr13Ni54Mo不锈钢，纳米WC-10Co-4Cr涂层具有优异的抗磨蚀性能，其抗磨蚀性能是ZG06Cr13Ni54Mo不锈钢10倍以上。
　　关键词：超音速火焰喷涂；涂层；WC-10Co-4Cr;磨蚀

 Abrasion and Microstructure Study of WC-10Co-4Cr Coatings Deposited by HVOF Spraying
MAO Peng-zhan¹, WU Yan-ming¹, CHEN Xiao-ming¹, Huang Xun-lei¹,Mei Hua-feng¹,
ZHOU Xia-liang² ,MA Hong-hai³
1. Hangzhou Mechanical Design Research Institute, Ministry of Water Resources, Hangzhou Zhejiang 310012, China;
2. Standard & Quality Control Research Institute, Ministry of Water Resources, Hangzhou;
3. Hangzhou Jianghe Equipment Co, Hangzhou Zhejiang 310012, China Zhejiang 310012, China

　　Abstract: Multimodal WC-10Co-4Cr coating was deposited on ZG06Cr13Ni4Mo stainless steel substrate by using HVOF spraying system. The properties of bond strength, micro hardness, porosity and abrasive wear of the coating were investigated. The phases of the feedstock powder and the coating were analyzed by XRD, The characterizations of spraying feedstock powder, microstructure and surface micrograph wear surfaces were analyzed by SEM. The results have indicated that the WC-10Co-4Cr coating exhibits high bond strength, micro-hardness and compact structure, the average micro-hardness reached to 1435Hv0.2 and the bond strength was more than 70MPa. Compared with the ZG06Cr13Ni4Mo stainless steel, WC-10Co-4Cr coating exhibits excellent anti-abrasion property, the anti-abrasion property of the coating was more than 10 times to the ZG06Cr13Ni4Mo stainless steel.

　　Key words: HVOF; Coatings; WC-10Co-4Cr; Abrasion