WC增强Fe基喷熔层组织及磨粒磨损性能  

Microstructure and abrasive behavior of WC reinforced Fe-based alloy coatings prepared by flame spraying

作　　者：梁补女[1] 张振宇[1,2] 于国红[3] 

机构地区：[1]兰州工业高等专科学校材料工程系,甘肃兰州730050 [2]兰州理工大学有色金属新材料国家重点实验室,甘肃兰州730050 [3]兰州城市学院机械工程系,甘肃兰州730070

出　　处：《材料热处理学报》2010年第10期115-118,共4页Transactions of Materials and Heat Treatment

基　　金：甘肃省自然基金项目(0710RJZA071)

摘　　要：以Fe60自熔合金粉末和碳化钨粉末为原料,利用氧-乙炔火焰喷熔方法在45钢表面制备了碳化钨复合材料耐磨喷熔层;用扫描电子显微镜(SEM)、场发射扫描电镜(FEGSEM)和能量色散谱仪(EDS)等技术分析了喷熔层的显微组织结构;考察了复合喷熔层在磨粒磨损性能。结果表明:WC颗粒均匀分布在复合材料喷熔层组织中,其组织结构均匀并弥散分布着细小的硬质相;复合材料喷熔层在滑动干摩擦条件下表现出优异的耐磨粒磨损性能,碳化钨对喷熔层有显著的增强作用。Fe-based composite coatings reinforced with WC particulates were produced on 1045 carbon steel by thermal spray welding.The microstructure was characterized by means of scanning electron microscopy（SEM）,field emission scanning electron microscopy（FESEM） and analysis of energy dispersive spectrometer（EDS）.The abrasive wear behavior of the coatings was investigated under dry sliding wear conditions,and was compared with that of Fe-based coatings produced without the addition of WC.The results show that the microstructure of the coatings is compact with homogeneous distribution of WC particles,in which amount of finer carbides dispersed.The coating reinforced with WC exhibits a significant increase in wear resistance.

关 键 词：喷熔层 铁基合金 碳化钨 耐磨性 

分 类 号：TG174.44[金属学及工艺—金属表面处理]