The properties of hydroxyapatite ceramic coatings produced by plasma electrolytic oxidation

Adeleke, Sakiru Adekunle and Ramesh, Singh and Bushroa, Abdul Razak and Ching, Yern Chee and Sopyan, Iis and Maleque, Md Abdul and Krishnasamy, Sivakumar and Chandran, Hari and Misran, Halina and Sutharsini, Ubenthiran (2018) The properties of hydroxyapatite ceramic coatings produced by plasma electrolytic oxidation. Ceramics International, 44 (2). pp. 1802-1811. ISSN 0272-8842

Full text not available from this repository.
Official URL: https://doi.org/10.1016/j.ceramint.2017.10.114

Abstract

Calcium phosphate coatings produced on the surface of Ti6Al4V by plasma electrolytic oxidation (PEO) using different concentrations of hydroxyapatite (HA) in a 0.12 M Na3PO4 (NAP) electrolyte solution was investigated. It was found that the amount of calcium phosphate particles infiltrated into the coating layer as well as the thickness and the surface roughness of the coating increased with increasing HA concentration. The porosity of the ceramic coatings indicated an inverse relationship with the concentration of HA particles dispersed in the NAP solution. The result also demonstrates that higher scratch adhesive strength was achieved using 1.5 g/L HA solution, producing a critical load of 2099 mN, while 0 g/L HA only produced a critical load of 1247 mN. The adhesion becomes independent of thickness when the concentration of HA exceeds 1.5 g/L. The failure of the coating was characterized by large periodic hemispherical chipping, while intermittent delamination was noticed with the coating embedded with HA particles. This study demonstrate the viability of using PEO to produce a thin layer of HA ceramic coating on Ti6Al4V suitable for biomedical applications.

Item Type: Article
Uncontrolled Keywords: Plasma electrolytic oxidation; Hydroxyapatite coating; Coating characteristics
Subjects: R Medicine
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Faculty of Medicine
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 08 Oct 2019 03:34
Last Modified: 08 Oct 2019 03:34
URI: http://eprints.um.edu.my/id/eprint/22702

Actions (login required)

View Item View Item