摘要
在Cr4Mo4V轴承钢表面等离子体浸没注入(PIII)了氮离子(N+)、类金刚石(DLC)、碳化钛(TiC),测量了处理前后试样表面的显微硬度,在干摩擦条件下进行了与Si3N4陶瓷球对磨的摩擦学实验,通过光学显微镜观察了磨损表面形貌,分析了磨损机理。结果表明:离子注入后显微硬度明显增大,注入TiC的试样增幅最大,达到54.7%;注入TiC的试样摩擦系数下降到约0.2,最小磨痕宽度减小了50%;未处理和注入N+试样的磨损机理主要以粘着磨损为主,但注入N+试样磨损程度有所减轻;注入DLC和TiC的试样主要磨损机理以疲劳磨损为主;离子注入TiC表面改性的表面综合性能最好,其次为注入DLC、注入N+。
The surface of Cr4Mo4V was modified with N＋, diamond-like carbon thin film（DLC） and TiC plasma immersion implantation（PIII） respectively. The surface microhardness was measured. The tribological properties were investigated under dry friction condition against Si3 N4 ball. The worn surface was observed with opticalmicroscope. Results show that the micro- hardness increases after ion-implanted. Implanted with TiC, the increasing degree reaches the maximum, 54.7%. And its friction coefficient decreases from 0.9 to 0.2, the width of worn scar decreases by 50%. The wear mechanism of un-implanted and implanted with N＋ is mainly adhesion. However, the wear of implanted with N＋ is more gentle. The wear mechanism of implanted with DLC and TiC is mainly fatigue wear. The synthetical surface performance of ion-implanted steel is in descending sequence of implanted with TiC, DLC and N＋.
出处
《河北科技大学学报》
CAS
北大核心
2010年第2期97-99,111,共4页
Journal of Hebei University of Science and Technology
基金
河北科技大学博士科研启动基金资助项目(QD200935)
