摘要
采用氮气-甲烷作为气源对40Cr钢进行离子氮碳共渗,研究了渗层的显微硬度分布、相组成以及耐磨性,结果表明:渗层由化合物层、扩散层和基体组成;表面渗层物相结构主要由氮(碳)ε化合物和Fe3C构成;试验电压600 V时,渗层深度最大,但耐磨性最差;探讨了氮气-甲烷离子氮碳共渗机理。
The microhardness distribution of the compound layer, the phase composition and wear resistance of 40Cr steel treated by compound treatment method of N2 CH4 co-diffusing were studied. The results how that the composite layer consists of N, C compound, diffused layer and basic structure. The phase composition of the composite layer is composed of Fe3C and ε phase （N,C compound）; when testing voltage is 600V, the depth of the compound layer is deepest but wear resistance is worst. The mechanism of ion-nitrocarburizing with N2 and CH4 was discussed.
出处
《热加工工艺》
CSCD
北大核心
2008年第2期60-63,共4页
Hot Working Technology
基金
重庆大学研究生科技创新基金资助项目(200701Y1A0160202)
关键词
离子氮碳共渗
耐磨性
机理
ion-nitrocarburizing
wear resistance mechanism
