超细碳化钨体积分数对喷焊层耐磨性的影响  

Influences of volume content of WC on wear resistance of sprayed coating

作　　者：陈志刚[1] 汤小丽[1] 苏静[1] 刘曦[1] 

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2006年第1期44-46,共3页Journal of Jiangsu University：Natural Science Edition

基　　金：江苏省自然科学基金资助项目(BK2002010)

摘　　要：为了获得质量较好的喷焊层,提高喷焊层的耐磨性,在镍基自熔性合金粉末F102中加入不同体积分数的亚微米碳化钨(WC)进行氧-乙炔火焰喷焊.通过磨粒磨损试验、显微硬度测试和显微组织分析,研究了不同WC体积分数对喷焊层质量及其耐磨性的影响.试验结果表明WC的体积分数为1%时,喷焊层的质量最优,耐磨性最好,硬度也最高.但随着WC体积分数的进一步增加,喷焊层的耐磨性和硬度反而有所下降.涂层的耐磨性主要与涂层硬度,WC硬相的含量,空洞的数量及大小等有关.硬度越高,WC硬相越多,空洞越少、越小,涂层的耐磨性越好,反之越差.Flame spray was carried out by mixing different content of WC into self-fusing F102 metal powders. The influences of WC content upon wear resistance of sprayed coating were studied through testing of macroscopic hardness, low-stress abrasive particle wear resistance and analyse of microstructure of sprayed coating. The results show that when the volume content of WC is 1%, the quality of the coating is the best. With the volume content of WC increasing, the wear resistance and hardness decrease.

关 键 词：超细碳化钨 耐磨性 火焰喷焊 磨粒磨损 体积分数 

分 类 号：TG73[金属学及工艺—刀具与模具]