中文摘要：

Ni 修改了层被血浆表面 alloying 在纯钛的表面上准备技术。表面外观，微观结构形态学，作文分发，阶段结构和 Ni 的 microhardness 修改了层被分析。Ni 的 Tribological 表演和疲劳行为修改了纯钛的层用 Pin-on-disc 摩擦计被观察并且重复了影响测试。结果显示表面意味着 Ni 的 Ni 集中修改了层是将近 18% 它 TiNi， Ti2Ni 和 Ti 阶段是镇静的。Ni 的最大的表面 microhardness 修改了层是底层的坚硬几乎双重的约 580 HV。Ni 的 wear 抵抗修改了层显然被改进。Ni 的 wear 机制修改了穿的层表演忽视磨损，当纯钛是穿的磨损和粘附时。Ni 修改了礼品更好影响的层疲劳力量。

英文摘要：

Ni modified layer is prepared on the surface of pure titanium by plasma surface alloying technique. Surface appearance, micro-structure morphology, composition distribution, phase structure and microhardness of Ni modified layer are analyzed. Tribological performance and fatigue behaviors of Ni modified layer of pure titanium are observed using Pin-on-disc tribometer and repeated impact test. The results indicate that the surface mean Ni concentration of Ni modified layer is nearly 18% which is composed of TiNi, Ti2Ni and Ti phase. The maximum surface microhardness of Ni modified layer is approximately 580 HV which is almost two-fold of the hardness of the substrate. The wear resistance of Ni modified layer is improved obviously. The wear mechanism of Ni modified layer shows slight abrasion wearing, while pure titanium is abrasion and adhesion wearing. Ni modified layer presents better impact fatigue strength.