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首页> 外文期刊>Acta biomaterialia >Fabrication of compositionally and structurally graded Ti-TiO2 structures using laser engineered net shaping (LENS).
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Fabrication of compositionally and structurally graded Ti-TiO2 structures using laser engineered net shaping (LENS).

机译：使用激光工程网成形（LENS）制备成分和结构渐变的Ti-TiO2结构。

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摘要

Novel structures with functional gradation in composition and structure were successfully made in Ti-TiO(2) combination using laser engineered net shaping. The addition of fully dense, compositionally graded TiO(2) ceramic on porous Ti significantly increased the surface wettability and hardness. The graded structures with varying concentrations of TiO(2) on the top surface were found to be non-toxic and biocompatible. In addition, the higher wettability of surfaces with TiO(2) can enhance their ability to form chemisorbed lubricating films, which can potentially lower the friction coefficient against ultrahigh molecular weight polyethylene liner, thus reducing its wear rate. These unitized structures with open porosity on one side and hard, low friction surface on the other side can eliminate the need for multiple parts with different compositions for load-bearing implants such as total hip prostheses.
机译：使用激光工程网成形技术成功地在Ti-TiO（2）组合中成功地制造了具有组成和结构上功能梯度的新型结构。在多孔Ti上添加完全致密，成分分级的TiO（2）陶瓷显着提高了表面润湿性和硬度。发现在顶表面上具有不同浓度的TiO（2）的渐变结构是无毒的且具有生物相容性。此外，TiO（2）的表面更高的润湿性可以增强其形成化学吸附润滑膜的能力，从而有可能降低与超高分子量聚乙烯衬里的摩擦系数，从而降低其磨损率。这些在一侧具有开放孔隙而在另一侧具有坚硬，低摩擦表面的一体化结构，可消除对具有不同成分的多个部件用于承重植入物（例如全髋关节假体）的需求。

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