船舶机械中WC-12Co金属陶瓷涂层性能研究  

Performance Study of WC-12Co Coatings Applied In Marine Machinery

作　　者：曹正黄[1] 丁彰雄[1] 王群[2] 

机构地区：[1]武汉理工大学能源与动力工程学院,武汉430063 [2]湖南大学材料科学与工程学院,长沙410082

出　　处：《船海工程》2008年第3期32-35,共4页Ship & Ocean Engineering

基　　金：国家自然基金项目资助(50479016)

摘　　要：采用HVOF喷涂工艺制备了2种多峰结构和1种亚微米结构WC-12Co涂层,并采用SEM、XRD等方法对3种涂层进行了显微组织、相结构及显微硬度分析;在进行涂层球盘磨损试验的基础上,探讨了多峰WC-12Co涂层的磨损机理。研究结果表明:由含质量分数为30%纳米WC-12Co的粉末制备的多峰涂层WC氧化脱碳程度最低,显微硬度最高;采用含质量分数为50%纳米WC-12Co的粉末制备的多峰涂层耐磨损性能最为优良,可望作为耐磨涂层应用于船舶机械。Two multimodal structures and a submicron structure WC-12Co cermet coatings were deposited by HVOF technology, and the coating microstructure, phase composition and micro-hardness were analyzed by SEM and XRD methods. As well, on the basis of ball-on-disc test of the coating wear resistant, the wear failure mechanisms of WC-12Co coatings were explored. Research results show that the multimodal coating deposited by the powder containing 30% nano-size WC-12Co particles has the least decarburization during spra- ying and the highest coating micro-hardness. Meanwhile, the another multimodal coating deposited by the powder containing 50% nano-size WC-12Co particles possesses the most excellent wear resistance with important potential applications in marine machinery.

关 键 词：船舶机械 WC-12CO涂层 磨损 

分 类 号：U668[交通运输工程—船舶及航道工程]