保护感应熔涂Ni60涂层的组织与性能  

Microstructure and Properties of Ni60 Coating Prepared by Protective Induction Cladding

作　　者：张新子[1,2] 马颖[1] 闫峰云[1] 郝远[1] 刘伟[2] 彭蝴蝶 

机构地区：[1]兰州理工大学材料科学与工程学院 [2]首钢岷山机械厂

出　　处：《特种铸造及有色合金》2008年第11期834-836,共3页Special Casting & Nonferrous Alloys

摘　　要：在耐火涂层保护下,将牌号为Ni60镍基自熔性合金粉料,进行了冷敷感应熔涂试验研究。对涂层组织进行了金相、扫描电镜、电子探针及X射线能谱等分析,并测试了涂层的显微硬度分布。结果表明,涂层与基体达到良好的冶金结合,涂层组织致密、非金属夹杂物少、孔隙率低、硬度分布均匀。一次熔涂厚度达0.6mm,远大于其他熔涂工艺,克服了无保护涂层的感应熔涂的不足,使涂层内在品质上与真空熔结涂层相接近。Ni60 coating was prepared from the self-fusing alloy powder by induction cladding in refractory coating protection.Microstructure of the Ni60 coating was observed by optical microscope(OM),SEM(scanning electronic microscope),EPMA(electronic micro-analysis) and XRD(X-ray diffraction),and hardness of the coating was measured also.The results reveal that the coating exhibits desirable metallurgical bonding mechanism with the matrix alloy,in which compact microstructure with little non-metallic inclusion and low porosity rate as well as uniformly distributed hardness can be presented.The cladding thickness can reach up to 0.6mm in one induction cladding,which is far superior to that of one prepared by the other cladding methods.Meanwhile,the coating quality is equivalent to that in vacuum cladding as a result of overcoming the shortcoming of induction cladding without protective coating.

关 键 词：保护涂层 感应熔涂 涂层组织 冶金结合 

分 类 号：TG174.44[金属学及工艺—金属表面处理]