A simple route towards a hydroxyapatiteaMg(OH)2 conversion coating for magnesium

Highlights ao A simple hydroxyapatite (HA)aMg(OH)2 conversion-coating route was exploited on magnesium. ao This method does not require an applied electrical signal or cladding technique. ao Such biomimetic coatings are suitable controlled dissolution of bioresorbable Mg implants. ao The results rev...

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Bibliographic Details
Published in:Corrosion science 2011-06, Vol.53 (6), p.2263-2268
Main Authors: Chen, X-B, Birbilis, N, Abbott, T B
Format: Article
Language:English
Subjects:
Biodegradation
Cladding
Coatings
Conversion coating
Dissolution
Hydroxyapatite
Magnesium
Surgical implants
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Summary:Highlights ao A simple hydroxyapatite (HA)aMg(OH)2 conversion-coating route was exploited on magnesium. ao This method does not require an applied electrical signal or cladding technique. ao Such biomimetic coatings are suitable controlled dissolution of bioresorbable Mg implants. ao The results revealed that the (HA)aMg(OH)2 coatings significantly retard the Mg biodegradation. A method that does not require an applied electrical signal or cladding technique is exploited to generate a hydroxyapatite (HA) containing conversion coating on Mg. The coating contained HA+Mg(OH)2 and was shown to control dissolution of Mg. Electrochemical and immersion tests were used to examine the biodegradation performance of coated Mg in Minimum Essential Medium (MEM) via exposure in a CO2 incubator at 37ADGC. The results herein reveal that the HAaMg(OH)2 coatings significantly retard the biodegradation rate of the substrate.
ISSN:0010-938X
DOI:10.1016/j.corsci.2011.03.008