放电等离子烧结Ni60_WC涂层的显微组织与性能  

Microstructure and Mechanical Properties of Ni60_WC Coating Prepared 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,宁波315016 [2]华东理工大学材料科学与工程学院,上海200237

出　　处：《材料导报》2011年第12期85-87,99,共4页Materials Reports

基　　金：浙江省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钢基体上制备了Ni60_WC涂层，并分析和研究了Ni60_WC涂层的显微组织、界面结合情况以及耐磨性能。结果表明，Ni60_WC涂层主要由WC、FeW3C、Cr23C6、Ni3Fe等相组成；涂层平均硬度为968．5HV0.2，过渡层硬度在968．5-225．2HV0.3呈梯度分布，宽度约为0．25mm，涂层与基体属于冶金结合；在磨粒磨损条件下涂层体积磨损率为2．31×10^-2cm^3。Ni60_WC coating was prepared on 45 steel substrate by spark plasma sintering. The microstructure and interface bonding of Ni60_WC coating were analyzed. The results indicate that Ni60_WC coating mainly consists of WC,FeW3C,Cr23C6 ,Ni3Fe. The average hardness of coating is up to 968. 5HV0.3. The transition layer distribute gradient with the hardness from 968. 5HV0 a to 225.2HV0 a. A solid interracial metallurgy bonding is formed between coating and substrate. The width of transition layer is about 0. 25mm. The coating volume wear rate is 2. 31 ×10^-2cm^3 with the condition of abrasive wear.

关 键 词：放电等离子烧结 Ni60_WC涂层 磨粒磨损 

分 类 号：TG174.44[金属学及工艺—金属表面处理]