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Enhancement of the tribological performance and surface wettability of Ti6Al4V biomedical alloy with boric/sulfuric acid anodic film
Surface Topography: Metrology and Properties ( IF 2.7 ) Pub Date : 2021-08-24 , DOI: 10.1088/2051-672x/ac1d87
M T Acar , H Kovacı , A Çelik

Titanium and its alloys have many advantages such as acceptable biocompatibility and good corrosion resistance and these advantages make them a widely preferred biomaterial. However, it is also known that they have some disadvantages such as poor wear resistance and insufficient surface wettability. Therefore, to overcome this disadvantages, boric/sulfuric anodic films with different anodization time was formed on the surface of Ti6Al4V. The morphological and structural properties of anodic films were evaluated by XRD, XPS, SEM, Raman spectra, micro-hardness tester, 3D profilometer, and surface tension-meter. Also, the tribological behavior of them was analyzed by a pin-on-disk tribo-tester. The average coefficient of friction (CoF) of the untreated Ti6Al4V alloy is 0.37, while the CoF of boron containing TiO2 anodic films is in the range of 0.04–0.15. Also, the anodic films reduced the wear rate by about 30% compared to the untreated Ti6Al4V. In addition to all these, it was observed that the anodic films changed the surface morphology. It was determined that the produced anodic films were in porous structures and with the increase of the applied anodizing time, the possibility of contacting the liquid with the surface increased.



中文翻译:

硼/硫酸阳极膜增强Ti6Al4V生物医用合金的摩擦学性能和表面润湿性

钛及其合金具有许多优点,例如可接受的生物相容性和良好的耐腐蚀性,这些优点使其成为广泛优选的生物材料。然而,众所周知,它们具有耐磨性差、表面润湿性不足等缺点。因此,为了克服这一缺点,在 Ti6Al4V 表面形成了不同阳极氧化时间的硼/硫阳极氧化膜。通过XRD、XPS、SEM、拉曼光谱、显微硬度计、3D轮廓仪和表面张力仪对阳极薄膜的形态和结构特性进行了评估。此外,它们的摩擦学行为通过针盘摩擦测试仪进行分析。未经处理的 Ti6Al4V 合金的平均摩擦系数 (CoF) 为 0.37,而含硼 TiO 2的 CoF阳极薄膜在 0.04-0.15 的范围内。此外,与未经处理的 Ti6Al4V 相比,阳极薄膜的磨损率降低了约 30%。除了所有这些,还观察到阳极膜改变了表面形态。确定生产的阳极膜呈多孔结构,随着阳极氧化时间的增加,液体与表面接触的可能性增加。

更新日期:2021-08-24
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