摘要
对304奥氏体不锈钢进行400℃不同时间的离子渗氮处理。利用光学显微镜、轮廓仪、能谱仪、X射线衍射仪和显微硬度计研究了经渗氮处理后试样改性层的表面形貌、微观结构、相组成和性能等。结果表明,随着渗氮时间的延长,试样表面的粗糙度、渗层厚度、表面氮含量、显微硬度基本呈线性增加;X射线衍射分析表明,在400℃不同时间的渗氮层为单一S相,并无CrN相析出。
Plasma nitriding treatments of 304 austenitic stainless steel were performed at 400 ℃ for different time.Optical microscopy,surface profiler,EDX,X-ray diffraction （XRD）,and microhardness tests were used to evaluate the surface morphology,microstructure,phase composition and properties of the nitrided layer.The results indicate that the surface roughness,nitrided depth,nitrogen concentration and microhardness of the nitrided samples increase with the increase of nitriding time.XRD patterns show that the nitrided layer formed at 400 ℃ for different time consists of S-phase only and no precipitation of chromium nitride.
出处
《金属热处理》
EI
CAS
CSCD
北大核心
2007年第11期56-59,共4页
Heat Treatment of Metals
关键词
离子渗氮
奥氏体不锈钢
渗氮时间
plasma nitriding
austenitic stainless steel
nitriding time
