Dual layer inorganic coating on magnesium for delaying the biodegradation for bone fixation implants

Alabbasi, Alyaa, Kannan, M. Bobby, and Blawert, C. (2014) Dual layer inorganic coating on magnesium for delaying the biodegradation for bone fixation implants. Materials Letters, 124. pp. 188-191.

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Abstract

In this study, a dual layer inorganic coating was formed on a pure magnesium metal using electrochemical methods to delay the biodegradation of the metal for potential bone fixation implant applications. Firstly, a layer of silicate-based coating was formed on the base metal using the plasma electrolytic oxidation (PEO) method. A second layer of calcium phosphate (CaP) was formed on the PEO coating using the electrodeposition method. in vitro electrochemical degradation testings showed that the double layer coating (PEO-CaP) has significantly improved the initial degradation resistance of the metal. Localized degradation was not evident on the PEO-CaP coated metal even after 72 h exposure to simulated body fluid (SBF).

Item ID: 33596
Item Type: Article (Refereed Research - C1)
Keywords: magnesium; biomaterials; calcium phosphate; plasma electrolytic oxidation; degradation
ISSN: 1873-4979
Date Deposited: 10 Jun 2014 02:38
FoR Codes: 09 ENGINEERING > 0903 Biomedical Engineering > 090301 Biomaterials @ 100%
SEO Codes: 86 MANUFACTURING > 8612 Fabricated Metal Products > 861201 Coated Metal and Metal-Coated Products @ 100%
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