Department of Prosthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, 30 Zhongyang Road, Nanjing, Jiangsu 210008, China.
Jiangsu Key Laboratory of Oral Diseases and Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, 136 Hanzhong Road, Nanjing, Jiangsu 210029, China.
Biomed Res Int. 2017;2017:2054723. doi: 10.1155/2017/2054723. Epub 2017 Aug 7.
The purpose of this study was to deposit a thin layer of TiO on a Co-Cr substrate, serving as a deactivation film protecting the metallic fitting surface. The crystalline structure and surface morphology of the film were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). A scratch tester was used to examine the adhesion strength between the TiO film and the Co-Cr substrate. The water contact angles and antifungal efficacy against of the TiO-deposited Co-Cr samples were investigated and further compared with those of uncoated Co-Cr substrates. The results indicated that a pure anatase microstructure and dense and smooth surface texture as well as strong binding to the underlying metallic surface were obtained. The originally hydrophobic Co-Cr alloy surface turned hydrophilic after TiO film coating. Most importantly, the TiO-coated surface showed a superior antifungal capability under UV-irradiation compared to those without TiO coating. This work contains meaningful results for the development of a new metallic framework coating with improved hydrophilicity and antifungal properties.
本研究旨在在 Co-Cr 基底上沉积一层 TiO 作为钝化膜，以保护金属配件表面。采用 X 射线衍射（XRD）和扫描电子显微镜（SEM）对薄膜的晶体结构和表面形貌进行了表征。采用划痕测试仪检测了 TiO 薄膜与 Co-Cr 基底之间的结合强度。研究了 TiO 沉积 Co-Cr 样品的水接触角和抗 的效果，并与未涂层 Co-Cr 基底进行了比较。结果表明，得到了纯锐钛矿结构、致密光滑的表面形貌以及与基底金属表面的强结合。原始疏水的 Co-Cr 合金表面在 TiO 薄膜涂层后变得亲水。最重要的是，与未涂覆 TiO 的表面相比，涂覆 TiO 的表面在紫外光照射下表现出优异的抗真菌能力。这项工作对于开发具有改善的亲水性和抗真菌性能的新型金属框架涂层具有重要意义。
