摘要
采用低压等离子体弧源离子渗扩氮技术,在350～450℃之间对奥氏体不锈钢进行表面强化,可在表面形成2～15μm厚的含氮奥氏体过饱和层,即“γ_N”相。最大含氮量可达到40％(原子数分数)以上。显微硬度可达到HV_(0.1)1200以上,具有良好的抗蚀性,耐磨性。本工艺具有表面氮浓度高,渗速快,工件表面无弧光放电,表面光洁度好的特点。
The study of the nitriding of 18~8 stainless steel by a low voltage plasma arc source at the temperature 350~
480℃ and the pressure 2×10-1Pa. The nitrided layers were examined with optical microscopy.X-ray diffraction,
AES and XPS. The highest amount of nitrogen in interstitial solid solution approaches 45at%. The hardness of nex-
panded f. c. c. phase with the thickness about 13um is Hv0.1 1200. There is a critical temperature for the formation of
'γ'phase.
出处
《表面技术》
EI
CAS
CSCD
1999年第6期17-19,共3页
Surface Technology
关键词
低压
等离子弧源
渗氮
不锈钢
低温
Low pressure plasma arc source Nitriding Stainless steel
