摘要
采用超音速火焰喷涂技术在45钢基体表面制备三种不同粒度的WC-12Co涂层,利用扫描电镜、X射线衍射仪、显微硬度计等仪器对涂层的组织结构与性能进行分析,研究了粉末粒度对涂层表面性能的影响。结果表明:随粉末粒度的减小,涂层致密度和显微硬度明显提高,WC分解逐渐增多,出现了微量的W2C和Co6W6C。微纳米复合粉末制备的WC-12Co涂层表现出了较好的性能。
Three kinds of WC-12Co coatings with different powder granularity were thermally sprayed via high velocity oxy-fuel （HVOF） on the substrate of 45 steel. The substructure and properties were analyzed by SEM, XRD, micro-hardness tester and so on. The effects of powder granularity on properties of WC-12Co coatings were studied. The results indicate that along with the decrease of particles size in powders, the density and microhardness of coating increase obviously. The decomposition of WC is increased. There is a little of W2C and Co6W6C. The properties of WC-I 2Co coatings show well with mutimodal WC- 12Co powders.
出处
《热加工工艺》
CSCD
北大核心
2014年第4期138-140,共3页
Hot Working Technology
基金
国家自然科学基金资助项目(51275376)
