摘要
利用SQC-100高焓等离子喷涂系统在0Cr13Ni4Mo不锈钢基体表面制备了WC-10Co-4Cr涂层;通过金相测试、摩擦磨损试验、拉伸试验,分别评价了WC-10Co-4Cr涂层的孔隙率、显微硬度、耐磨损性能、结合强度;利用扫描电子显微镜(SEM)和X射线衍射仪(XRD)分别观察和分析了WC-10Co-4Cr涂层的微观形貌和成分。结果表明:WC-10Co-4Cr涂层的孔隙率为0.77%,硬度为1 210HV,耐磨性是基体的143倍,涂层与基体保持着良好的结合,结合强度达到72 MPa;WC-10Co-4Cr涂层结构致密,主要由WC相及少量W2C相组成;WC-10Co-4Cr涂层的断裂主要表现为沿晶断裂和穿晶断裂;提高粒子速率和温度可有效提高WC-10Co-4Cr涂层的结合强度。
WC-10 Co-4 Cr coating was prepared on the surface of 0 Cr13 Ni4 Mo stainless steel by SQC-100 high enthalpy plasma spray system.The porosity,microhardness,wear resistance,bonding strength of the WC-10 Co-4 Cr coating were assessed in terms of metallographic testing,friction and wear testing,bonding strength testing and tensile testing.The microstructure of the coating was observed by scanning electron microscopy（SEM）,and the composition of the coating was analyzed by X-ray diffraction（XRD）.The results show that the porosity of the WC-10 Co-4 Cr coating was 0.77%,the hardness was 1 210 HV,and the anti-wear property of the coating was 143 times more than that of the stainless steel matrix.The coating had good bonding to the matrix,with a bonding strength of72 MPa.The WC-10 Co-4 Cr coating with dense structure was mainly composed of WC phase and few W2 C phase,and the fracture mechanism was transgranular fracture and intergranular fracture.Increasing particle speed and temperature can improve the binding strength of the WC-10 Co-4 Cro coating.
作者
伏利
陈小明
吴燕明
刘伟
赵坚
周夏良
林斯欣
FU Li;CHEN Xiaoming;WU Yanming;LIU Wei;ZHAO Jian;ZHOU Xialiang;LIN Sixin(Water Conservancy Machinery and Remanufacturing Technology Engineering Laboratory of Zhejiang Province, Hangzhou 310012, China;Standard ＆ Quality Control Research Institute, Ministry of Water Resources, Hangzhou 310012, China;Hangzhou Institute of Mechanical Design, Ministry of Water Resources, Hangzhou 310012, China;Foshan Advanced Surface Technology CO. , Ltd. , Foshan 528224, China)
出处
《腐蚀与防护》
CAS
北大核心
2018年第2期95-98,102,共5页
Corrosion & Protection
基金
国家948计划项目(201218)
浙江省公益性项目(2013C31044)
关键词
高焓等离子喷涂
结合强度
穿晶断裂
沿晶断裂
粒子速率
粒子温度
high enthalpy plasma spraying
bonding strength
transgranular fracture
intergranufar fracture
particle speed
particle temperature
