In this study, the combination of titanium dioxide (TiO2) and/or hydroxyapatite (HA) coatings on Ti6Al7Nb titanium alloy to be used as an implant was performed in different solution retention times by the sol–gel dip-coating method and the characterization and optical properties of these coatings were investigated. Two different coatings were made on the substrate, the first group of samples was first coated with TiO2 and then with HA, while the second group of samples was coated with TiO2 alone. Before sol–gel coating, the samples were rinsed in distilled water and dried at 200°C for 2 h. The samples were immersed perpendicular to the coating solution. Thin films were obtained at a draw rate of 2 mm s−1. Microstructure investigations of the prepared coatings were examined under optical and scanning electron microscopes, while solid-state elemental fractions were determined by energy-dispersive X-ray spectroscopy analysis. Fourier-transform infrared spectroscopy analysis was performed to determine the functional groups placed on the surface of the material. The optical properties of the material were determined by UV analysis.

中文翻译：

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溶胶-凝胶法研究 TiO2 和 HA 涂层 Ti6Al7Nb 合金的显微组织和光学性能

在本研究中，通过溶胶-凝胶浸涂法在不同的溶液保留时间下，将二氧化钛 (TiO2) 和/或羟基磷灰石 (HA) 涂层组合用作植入物的 Ti6Al7Nb 钛合金，并表征和研究了这些涂层的光学特性。在基材上制作了两种不同的涂层，第一组样品先涂有 TiO2，然后涂有 HA，而第二组样品单独涂有 TiO2。在溶胶-凝胶涂层之前，将样品在蒸馏水中冲洗并在 200°C 下干燥 2 小时。将样品垂直于涂层溶液浸入。以 2 mm s-1 的拉伸速率获得薄膜。在光学和扫描电子显微镜下检查制备的涂层的微观结构，而固态元素分数是通过能量色散 X 射线光谱分析确定的。进行傅里叶变换红外光谱分析以确定放置在材料表面上的官能团。材料的光学特性通过紫外分析确定。