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.
出处
《船海工程》
北大核心
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)
