摘要
利用低压等离子体弧离子源在350～450℃之间对奥氏体不锈钢进行快速渗氮表面强化,在适当的工艺条件下,处理90min即可得到厚度10μm左右的高硬度的氮过饱和奥氏体固溶体强化层.采用X射线衍射、电子探针及俄歇谱仪等对渗层进行结构分析表明,在处理温度低于450℃时,渗层为单相氮过饱和奥氏体固溶体层,表面氮可以达到15%,显微硬度达到1200HV,与原基体材料相比。
Austenitic stainless steel (1Cr18Ni9Ti) was nitrided using a low pressure plasma arc source in a temperature range of 350~450 ℃. Under proper processing conditions, a hard wear resistant surface is produced with the depth of the modified layer ranging from 2 to 10 μm. The nitrided layers were examined with optical microscopy, XRD, AES and EPMA. The results show that the nitrided layer consists of nitrogen expanded austenite with significant supersaturation. The atomic concentration of N in the surface layer can reach 15% with a hardness of 1 200 HV 1N .
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2000年第1期67-69,共3页
Tribology
基金
辽宁省自然科学基金
关键词
低压等离子体
渗氮
奥氏体不锈钢
耐磨性
low pressure plasma
nitriding
austenitic stainless steel
wear resistance
