高速电弧喷涂FeCrAl/Ni95Al复合涂层的性能  

Properties of FeCrAl/Ni95Al coating by high velocity arc spraying

作　　者：田浩亮[1,2] 魏世丞[2] 陈永雄[2] 童辉[2] 刘毅[2] 徐滨士[2] 

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100037 [2]装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072

出　　处：《金属热处理》2013年第4期92-96,共5页Heat Treatment of Metals

基　　金：国家973课题(2011CB013403);国家自然科学基金(51105377;50971132);国家科技支持课题(2011BAF11B07)

摘　　要：利用电弧喷涂技术在45钢基体表面制备了FeCrAl/Ni95Al复合涂层,先喷涂Ni95Al打底层增强涂层的结合强度,FeCrAl涂层作为工作层。利用扫描电镜(SEM)、能谱仪(EDS)、X射线衍射仪、拉伸试验机、显微硬度计和CETR微动摩擦磨损试验机研究了涂层的显微组织、力学性能及摩擦磨损性能。结果表明,复合涂层组织均匀致密,主要由Fe3Al金属间化合物、(Fe,Cr)固溶在涂层基体中。涂层结合强度为43 MPa,硬度值为530 HV0.1,涂层磨损失效形式为剥落和氧化磨损。The FeCrAI/Ni95 A1 composition coating was deposited on substrate 45 carbon steel by high velocity arc spraying technology. The FeCrAI coating was sprayed as the working coating. The Ni95AI coating was used as the interlayer for improving the adhesive strength of the composite coating. The microstructure, adhesive strength, micro-hardness and wear resistance of the composite coating were studied by SEM, EDS, X-ray diffract meter, tension test machine, micro-hardness tester and CETR friction tester respectively. The results show that the composite coating is dense and mainly consists of α-Fe, Fe3A1 and （ Fe, Cr）. The adhesive strength and micro-hardness of the coating is 43 MPa and 530 HVO. I respectively. The wear mechanism of the coating is scaling and oxidizing wear.

关 键 词：高速电弧喷涂 复合涂层 结合强度 耐磨性 

分 类 号：TG174.442[金属学及工艺—金属表面处理]