摘要
应用SEM、EDS、AES及XPS等分析方法对45钢表面离子渗硫层的组成结构的研究结果表明,渗硫层由沉积于基体表面的硫化物沉积层与少量硫元素渗入基体表层形成的扩散层组成,硫化物沉积层中主要生成了FeS及少量的FeS2,硫化物扩散层中主要形成了FeS。渗硫层的结构组成与减摩性能实验结果结合说明,离子渗硫表面的摩擦因数与未渗表面相比始终较低,是因为离子渗硫层的硫化物沉积层与硫化物扩散层分别在摩擦过程中的不同阶段发挥了减摩润滑作用,且摩擦表面始终存在分解再生的硫化物。
Compositon of ion sulphurized layer on 45 steel surface was studied by means of SEM,EDS,AES and XPS.The results show that the sulphurized layer is composed of the sulphide aggradation layer deposited on the substrate surface and the sulphide diffusion layer formed by some S element infiltrating the substrate.The sulphide aggradation layer is mainly composed of FeS and FeS2,and the main component of the sulphide diffusion layer is FeS.The result of wear test combined with the composition analysis of the sulphurized layer indicate that the friction coefficient of the sulphurized layer is lower than that of 45 steel, which attributes to the sulphide aggradation layer and sulphide diffusion layer of the ion sulphufized layer exerting excellent friction reduction and lubrication function at different stages during friction process, respectively, and some sulphide re-formed after decomposition during friction process is observed on the friction surface.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2009年第4期134-137,共4页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金资助项目(50775221)
关键词
离子渗硫
硫化物沉积层
硫化物扩散层
减摩过程
ion sulphurizing
sulphide aggradation layer
sulphide diffusion layer
friction reduction process
