Hydroxyapatite formation of Ca and P modified micro-arc oxidation coating on Ti alloy. (2nd November 2022)

• Record Type: Journal Article
• Authors: Liu, Liangwen; Wu, Xin; Wang, Jingyi; Tang, Ning; Li, Shuang; Zhang, Xianjv; Yang, Mei
• Is Part Of: Transactions of the Institute of Metal Finishing. Volume 100:Number 6(2022)
• Page Start: 348
• Page End: 353
• Publication Date: 2022-11-02
• Subjects: Titanium alloy -- hydroxyapatite -- Simulated Body Fluid (SBF) -- corrosion resistance -- immersion; Metals -- Finishing -- Periodicals; Metals -- Surfaces -- Periodicals; Metallurgy -- Periodicals; 671.705
• DOI: 10.1080/00202967.2022.2087944
• Languages: English
• ISSNs: 0020-2967

Abstract

ABSTRACT: A Simulated Body Fluid (SBF) treatment was performed to modify the surface of a TiO2 -based coating containing Ca and P prepared by micro-arc oxidation (MAO). Scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-Ray Photoelectron Spectroscopy (XPS) were employed to characterise the composition and morphology of the immersed Ca-P containing coating. The coating primarily presents a porous structure, which is mainly composed of anatase, rutile, CaP, and Nb2 O5 .The biological activity of the coating was determined by immersing in SBF for 5 days, showing hydroxyapatite (HA) formed on the surface of the coating and also revealing the good corrosion resistance of the coating in SBF. Finally, a lower MAO coating contact angle with SBF solution than that of TLM Ti alloy was obtained in the compatibility test, indicating that the coating has good compatibility with SBF.