摘要
采用双层辉光等离子渗金属技术,在低碳钢表面制备出超硬耐磨TiN/Ti渗镀扩散层,观察分析了TiN渗镀扩散层的成分及显微组织,并评价了其硬度和室温干滑动磨损条件下的摩擦磨损性能.结果表明:所制备的TiN/Ti复合渗镀扩散层表面为均匀的胞状物,Ti和N原子由表层向内呈梯度分布,与一般表面沉积的TiN层不同,属于冶金结合;所形成的TiN复合渗镀层厚度可达10μm左右,TiN层择优取向为(200)晶面;TiN层硬度较高(约2 200HV),在干滑动摩擦磨损条件下具有较低的摩擦系数及优异的耐磨性能.
Super hard and wear resistant multi-permeating TiN/Ti alloying layers were formed on the steel surface using double glow plasma surface alloying technique. Mcrostructure, surface compositions and worn surface were analyzed. Hardness profile and tribological behavior of multi-permeations TiN/Ti alloying layers were determined. Results indicated that the surface appearance of multi-permeating alloying layer was uniform, compact and cellular structure is fine. Atom Ti and N concentration changed gradually along the depth of the alloying layer. Interface between multi-permeations alloying layer and substrate was formed by metallurgy integration. The thickness of TiN diffusion alloying layer was about 10 μm at 920 ℃. TiN grew preferably in the dirction of（200）. The multi-permeating alloying layer has a very high surface hardness. Multi-permeating alloying layer exhibited excellent wear resistance and low friction coefficient under dry sliding conditions.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2006年第2期117-120,共4页
Tribology
基金
国家自然科学基金资助项目(50374050)
山西省自然科学基金资助项目(20031050)
关键词
辉光放电
尖端放电
空心阴极效应
TiN
摩擦磨损性能
glow discharge, tip discharge, hollow-cathode effect, TiN, friction and wear behavior
