CAJ | 학술논문

为了改善纯钛的表面性能，利用等离子表面合金化技术在纯钛表面形成 Zr?N 改性层。对 Zr?N 改性层的微结构、成分及硬度进行测试，并对改性层形成及表面硬度提高的机理进行分析。利用球?盘磨损试验对表面改性纯钛的摩擦学性能进行研究。结果表明，在纯钛表面形成了均匀致密的 Zr?N 改性层，改性层由表面 Zr?N化合物层和基体内 Zr、N 的扩散层构成。Zr?N 表面改性层显著提高了纯钛的表面硬度，表层的最高硬度约为HK1040。Zr?N表面改性层没有减摩效果，但明显改善了纯钛的磨损性能。
위료개선순태적표면성능，이용등리자표면합금화기술재순태표면형성 Zr?N 개성층。대 Zr?N 개성층적미결구、성분급경도진행측시，병대개성층형성급표면경도제고적궤리진행분석。이용구?반마손시험대표면개성순태적마찰학성능진행연구。결과표명，재순태표면형성료균균치밀적 Zr?N 개성층，개성층유표면 Zr?N화합물층화기체내 Zr、N 적확산층구성。Zr?N 표면개성층현저제고료순태적표면경도，표층적최고경도약위HK1040。Zr?N표면개성층몰유감마효과，단명현개선료순태적마손성능。
The Zr?N alloying layers were prepared on the surface of pure titanium substrates by plasma surface alloying technique to improve the surface properties. The microstructure, chemical composition, and hardness of Zr?N surface alloying layers were analyzed to understand the mechanisms of surface alloying and hardness improvement. The tribological performance of Zr?N surface alloying layers was studied by ball-on-disc wear machine. The results show that Zr?N alloying layers formed are homogeneous and compact. The Zr?N surface alloying layer consists of an outer nitride layer and an inner diffusion zone of zirconium and nitrogen. The surface treatment enhances the hardness of the surface layers of pure titanium substrates greatly and a surfaces hardness of HK1870 is obtained. Though Zr?N surface alloying layer does not show friction-reducing effect, it improves the wear resistance of pure titanium obviously.