Zhang Peng, Wang Xiaojian, Lin Zhidan, Lin Huaijun, Zhang Zhiguo, Li Wei, Yang Xianfeng, Cui Jie
Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, China.
Analytical and Testing Center, South China University of Technology, Guangzhou 510640, China.
Nanomaterials (Basel). 2017 Oct 23;7(10):343. doi: 10.3390/nano7100343.
Titanium (Ti) and Ti-based alloy are widely used in the biomedical field owing to their excellent mechanical compatibility and biocompatibility. However, the bioinert bioactivity and biotribological properties of titanium limit its clinical application in implants. In order to improve the biocompatibility of titanium, we modified its surface with TiO/TiN duplex composite films using a new method via micro-arc oxidation (MAO) and nitrogen ion implantation (NII) treatment. The structural characterization results revealed that the modified film was constructed by nanoarrays composed of TiO/TiN composite nanostitches with a size of 20~40 nm. Meanwhile, comparing this with pure Ti, the friction property, wear resistance, and bioactivity were significantly improved based on biotribological results and in vitro bioactivity tests.
钛（Ti）及其基合金因其优异的力学相容性和生物相容性而在生物医学领域得到广泛应用。然而，钛的生物惰性生物活性和生物摩擦学性能限制了其在植入物中的临床应用。为了提高钛的生物相容性，我们采用微弧氧化（MAO）和氮离子注入（NII）处理的新方法，用TiO/TiN双层复合膜对其表面进行了改性。结构表征结果表明，改性膜由尺寸为20~40nm的TiO/TiN复合纳米针组成的纳米阵列构成。同时，与纯钛相比，基于生物摩擦学结果和体外生物活性测试，其摩擦性能、耐磨性和生物活性得到了显著改善。
