Hydroxyapatite electro discharge coating of Zr-based bulk metallic glass for potential orthopedic application

Aliyu, A.A. and Abdul-Rani, A.M. and Ginta, T.L. and Rao, T.V.V.L. and Axinte, E. and Ali, S. and Ramli, M.N. (2019) Hydroxyapatite electro discharge coating of Zr-based bulk metallic glass for potential orthopedic application. Key Engineering Materials, 796 . pp. 123-128.

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In the past, Electro Discharge Machining (EDM) process was well known in cutting extremely hard materials and fabricating complex shapes. Recently, EDM process has been hybridized to not only shape, but also coats the surface of workpiece material. In this study, the deposition of hard carbide and calcium-based oxides on the Zr-based bulk metallic glass (BMG) using hydroxyapatite mixed electro discharge coating (HAm-EDC) have been investigated. The aim is to enhance the biocompatibility and cell adhesion of the BMG as a potential implant. The chemical composition, morphology and thickness of the coated surface were characterized through Optical Microscope, Scanning Electron Microscopy (SEM), X-ray Spectroscopy (EDS) and X-ray Diffraction (XRD). Major hydroxyapatite elemental composition (Ca, P, O), carbides (ZrC, TiC) and oxides (ZrO, CaZrO3) were formed on the treated BMG surface. A coating of about 23 µm thick was achieved. The addition of hydroxyapatite powder in the dielectric fluid enhances the Zr-based BMG surface quality by reducing the surface cracks and the crater size. © 2019 Trans Tech Publications, Switzerland

Item Type:Article
Impact Factor:cited By 7
Uncontrolled Keywords:Biocompatibility; Carbides; Cell adhesion; Coatings; Glass; Hydroxyapatite; Implants (surgical); Metal implants; Metallic glass; Morphology; Orthopedics; Scanning electron microscopy; Titanium carbide; Titanium compounds; X ray spectroscopy; Zirconium compounds, Chemical compositions; Electro discharge machining; Electrodischarges; Elemental compositions; Hydroxyapatite powder; Orthopedic applications; Workpiece materials; Zr based bulk metallic glass, Phosphorus compounds
ID Code:23666
Deposited By: Ms Sharifah Fahimah Saiyed Yeop
Deposited On:19 Aug 2021 08:08
Last Modified:19 Aug 2021 08:08

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