高速电弧喷涂再制造曲轴用复合涂层的设计与研究  

Research and design of composite coatings applied in remanufacturing crankshaft by high velocity arc spraying

作　　者：田浩亮[1,2] 魏世丞[2] 陈永雄[2] 刘毅[2] 童辉[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：《材料科学与工艺》2013年第5期51-56,共6页Materials Science and Technology

基　　金：国家重点基础研究发展规划资助项目(2011CB013403);国家自然科学基金资助项目(51105377;50971132);国家科技支持课题(2011BAF11B07)

摘　　要：为提高再制造曲轴的涂层性能和使用寿命,设计了FeAlCrNi/3Cr13、Ni95Al/3Cr13和1Cr13/3Cr13的3种复合涂层和不喷涂过渡层的3Cr13涂层,利用扫描电镜、能谱仪和微动摩擦磨损设备等测试技术分析了4种涂层的微观组织和微区成分组成,研究了喷涂不同过渡层对复合涂层结合强度的影响,重点考察了FeAlCrNi/3Cr13复合涂层的耐磨性能.结果表明,FeAlCrNi/3Cr13复合涂层组织致密,孔隙率约3.2%,氧化物含量低,涂层平均结合强度达到46.6 MPa,复合涂层在高载荷油润滑摩擦条件下的耐磨性能远高于基体45钢.FeAlCrNi/3Cr13复合涂层可以应用到高速电弧喷涂再制造修复曲轴产业中.Aiming at enhancing the properties and working life of the remanufacturing crankshaft, the micro-structure and chemical element composition of FeAlCrNi/3Cr13、Ni95Al/3Cr13和1Cr13/3Cr13 and 3Cr13 coatings were studied based SEM and EDS tester. The wear resistance of FeA1CrNi/3Crl3 composite coating was also studied under the micro-tribological testing set. As a result, the FeA1CrNi/3Crl3 composite coating is very dense and has a low oxide content and porosity of 3.2%. It also has high adhesive strength of 54.4 MPa and better wear resistant than substrate under the oil lubricate conditions.

关 键 词：曲轴 再制造 高速电弧喷涂 微观组织 复合涂层 

分 类 号：TG174.442[金属学及工艺—金属表面处理]