离子硫氮磷共渗层表层形貌与相结构研究  

A Study on the Surface Layer’s Topography and Phases of the Plasma Sulphur-nitrocarburised Case

作　　者：谢飞[1] 马宝钿[1] 张建林[1] 何家文[1] 

机构地区：[1]西安交通大学

出　　处：《热加工工艺》1996年第6期15-17,共3页Hot Working Technology

摘　　要：采用扫描电镜、能谱仪、Ｘ射线衍射仪等分析研究了离子硫氮碳共渗层表面与次表面形貌特征与相结构，探讨了其形成机制．结果表明：硫氮碳共渗表层为以硫化物颗粒组成的多层层状结构，其成分及层数随共渗气氛硫势的变化而变化；次表层为致密的氮碳化物层和氮、碳扩散层，这种渗层结构是其具有良好减摩性、跑合性与耐磨性的原因．With the help of scanning electron microscope, energy - dispersive x - ray analyzer and x - ray diffractometer, the plasma sulphur-nitrocarburised case’s surface and subsurface characteristics of topography and phase were analysed,The mechanism for the formation of the surface sulphides layer was proposed. It was found that the surface sulphides were composed of many layers, which were composed of small particles. The composition and the number of the multilayer changed with the change of the sulpher potential in the treating atmosphere. The subsurface consisted of a dense carbonitride compound zone and a diffusion zone. This kind of structure made the treated case have good properties of friction-reducing, running-in and wear-resistance.

关 键 词：离子硫氮碳共渗 形貌 相结构 化学热处理 

分 类 号：TG156.82[金属学及工艺—热处理]