Fabrication and Performance of ZnO Doped Tantalum Oxide Multilayer Composite Coatings on Ti6Al4V for Orthopedic Application

Nanomaterials

Ling Ou¹  Ziyu Ding²  Quanguo He²  Dongchu Chen³  Cuijiao Liao⁴  Zeliang Ding⁴ 

[1] Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, China;School of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China;School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China;School of Mechanical Engineering, Hunan University of Technology, Zhuzhou 412007, China;

关键词: zinc oxide;    tantalum oxide;    Ti6Al4V;    anti-inflammatory modification;    antibacterial property;    magnetron sputtering;    corrosion resistance;    adhesion strength;   

DOI  :  10.3390/nano9050685

来源: DOAJ

【 摘 要 】

Ti6Al4V titanium alloy has been widely used as medical implant material in orthopedic surgery, and one of the obstacles preventing it from wide use is toxic metal ions release and bacterial implant infection. In this paper, in order to improve corrosion resistance and antibacterial performance of Ti6Al4V titanium alloy, ZnO doped tantalum oxide (Ta_xO_y) multilayer composite coating ZnO-Ta_xO_y/Ta_xOy/Ta_xO_y-TiO₂/TiO₂/Ti (ZnO-Ta_xO_y) was deposited by magnetron sputtering at room temperature. As a comparison, monolayer Ta_xO_y coating was prepared on the surface of Ti6Al4V alloy. The morphology and phase composition of the coatings were investigated by field emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD), the elemental chemical states of coating surfaces were investigated by X-ray photoelectron spectroscope (XPS). The adhesion strength and corrosion resistance of the coatings were examined by micro-scratch tester and electrochemical workstations, respectively. The results show that the adhesion strength of multilayer ZnO-Ta_xO_y coating is 16.37 times higher than that of single-layer Ta_xO_y coating. The ZnO-Ta_xO_y composite coating has higher corrosion potential and lower corrosion current density than that of Ta_xO_y coating, showing better corrosion inhibition. Furthermore, antibacterial test revealed that multilayer ZnO-Ta_xO_y coating has a much better antibacterial performance by contrast.

【 授权许可】

Unknown