A simple route towards a hydroxyapatite-Mg(OH)2 conversion coating for magnesium

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 CO 2 incubator at 37°C. The results herein reveal that the HA-Mg(OH) 2 coatings significantly retard the biodegradation rate of the substrate. © 2011 Elsevier Ltd.