摘要
根据离子氮化原理开发了一种硫化技术。文中描述了离子硫化技术的基本过程，以及比传统电解工艺所具有的种种优点。硫化层主要通过化学反应和原子扩散过程而形成。其厚度一般在几个至几十个微米之间。采用XRD、SEM和EDAX分析了硫化层的微观组织、表面形貌和化学成分。结果显示：硫化层主要由具有层状六方晶体结构的FeS相，及一定量的具有正交结构的FeS_2组成，因此硫化层具有很好的固体润滑性能。采用SRV和MM200磨损试验机，对在45＃钢和GCr15钢上硫化层试样进行了摩擦学性能试验，发现硫化层能明显地降低摩擦系数，增加材料的耐磨性。在微观分析的基础上也讨论了硫化层的磨损机理。
Based on the principle of ion-nitriding a new ion sulphuration technique was developed. Its basic process and advantages compared with the traditional electrolytic method were described. The sulphuration coating was formed mainly by a chemical conversion, not only by a diffusion process. Its thickness was generally in the range of several to several tenth micormeters. X-ray difftaction, SEM, and EDAX were employed to analyze the microstructure, morphology, and composition of sulphide coating. The results showed that the sulpide coating was mainly composed of FeS with layered hexagonal lattice as well as a certain amount of FeS_2. So that it showed a pretty good solid lubrication behavior. The tribological propetties of ion sulphuration coatings on the 52100 and 1045 steel substrates were tested on,SRV and Amaler testing machines. It can be found from the testing results that the sulphide coating can sifnificantly decrease the friction coefficient and increase the wear resisance of materials. The mechanism was discussed in detail based on the microanalyses of sulphide coating as well.
出处
《中国表面工程》
EI
CAS
CSCD
1998年第4期15-20,共6页
China Surface Engineering
