Structural Properties of Hydroxyapatite (HAp) Thin Film on Ti-6Al-4V Alloy Prepared By Radio Frequency Plasma Sputtering
Australian Journal of Basic and Applied Sciences, 10(7) Special 2016, Pages: 46-50
5 Pages Posted: 13 Jul 2017
Date Written: February 10, 2016
Background: Titanium and its alloys have been used in biomedical applications because of their biocompatibility and mechanical properties. However, It has a possible toxic effect resulting from released vanadium and aluminum. The (HAP) coated Ti-6Al- 4V alloy prevented releasing of undesirable ions.
Objective: The aim of this paper is to investigate the structural and mechanical properties of Ti-6Al-4V alloy by coating with (HAp). This coating was prepared by Radio Frequency Plasma Sputtering (RF) method.
Results: The thin film of HAp was annealed at temperature of 800 C° to improve the structural, composition, roughness and hardness were characterized by X-ray diffraction (XRD), Field Emission- Scan Electron Microscope (FE-SEM), atomic force microscope (AFM) and Vickers hardness respectively. The HAp films were amorphous.
Conclusion: After annealing at 800 C° the surface amorphous of HAp was converted to crystalline structure. AFM and the Vickers hardness showed different roughness and hardness of Ti-6Al-4V when uncoating, as-deposited HAp thin film and after annealing.
Keywords: Ti-6Al-4V; hydroxyapatite coating; crystal growth; RF plasma
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