放电等离子烧结Ni60涂层的组织与性能  

Microstructure and properties of Ni60 coating by spark plasma sintering

作　　者：丁小芹 梁翠[2] 韩小云[1,2] 王贤瑞[2] 游航[2] 徐金富[1,2] 

机构地区：[1]宁波工程学院材料工艺研究所,浙江宁波315016 [2]华东理工大学材料科学与工程学院,上海200237

出　　处：《金属热处理》2011年第4期78-81,共4页Heat Treatment of Metals

基　　金：宁波市自然科学基金(2010A610152)

摘　　要：利用放电等离子烧结技术在45钢基体上制备Ni60涂层,并对Ni60涂层的显微组织、界面结合情况以及耐磨性能进行分析。结果表明:Ni60涂层主要由γ-Ni、CrB、Cr7C3等相组成;涂层与基体在界面处形成了良好的冶金结合,涂层硬度为597.5 HV0.3,过渡层硬度从597.5 HV0.3到209.6 HV0.3呈梯度分布,宽度大约为0.3 mm,涂层与基体的结合强度约为710 MPa;涂层在磨粒磨损的条件下体积磨损率为5.43×10-2cm3/h。Ni60 coating was prepared on 45 steel substrate by spark plasma sintering.The microstructure and interface bonding of Ni60 coating were analyzed.The results indicate that Ni60 coating mainly consists of γ-Ni,CrB and Cr7C3.A solid interfacial metallurgy bonding is formed between coating and substrate,the hardness of coating is 597.5 HV0.3.The transition layer distributes gradient with the hardness from 597.5 HV0.3 to 209.6 HV0.3.The thickness of transition layer is about 0.3 mm.The bonding strength between coating and substrate is about 710 MPa.The coating volume wear rate is 5.43 × 10-2 cm3/h under the condition of abrasive wear.

关 键 词：放电等离子烧结 NI60涂层 磨粒磨损 

分 类 号：TG174.44[金属学及工艺—金属表面处理]