火焰喷涂Ni基合金涂层的组织与性能  

Study on Microstructure and Properties of Nickel-based Alloy Layer by Flame Spray-welded Process

作　　者：赵鹏威 

机构地区：[1]长春市产品质量监督检验院,吉林长春130012

出　　处：《热加工工艺》2011年第22期120-122,共3页Hot Working Technology

摘　　要：利用氧-乙炔火焰喷熔的方法,在低碳钢表面制备Ni60、Ni60+20%WC和Ni包WC三种成分的合金涂层。利用扫描电镜(SEM)和X射线衍射仪(XRD)观察和分析涂层的组织与结构,并对涂层的显微硬度、耐磨性能和抗热疲劳性能进行了试验研究。结果表明:由于涂层组织结构的差异,Ni60-20%WC和Ni包WC合金层具有较好的综合性能。Three kinds of powder,which are Ni60,Ni60-20%WC and Nickel cladding WC,were sprayed on low carbon steel substrate by means of oxyacetylene flame spray-welded method.The microstructure and composition of the coating were examined using SEM and X-ray diffractometer.The microhardness,wear resistance and heat fatigue resistance were tested.The results show that the comprehensive properties of nickel-coated WC and Ni60＋20%WC alloy coating are apparently better than those of Ni60 alloy coating because of different microstructure of the coating.

关 键 词：火焰喷熔 耐磨性能 抗热疲劳性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]