Rapid Coating of AZ31 Magnesium Alloy with Calcium Deficient Hydroxyapatite Using Microwave Energy

摘要

Biodegradable CDHA coating was fabricated onto AZ31 substrates using a novel microwave assisted coating technique in minutes. CDHA coatings produced in aqueous solutions with various Ca/P ratios showed different microstructures. Results of in vitro immersion assessment revealed that CDHA coated samples showed significantly improved corrosion resistance. Cell culture assays demonstrated that the CDHA coated samples possessed good cytocompatibility and promoted cellular proliferation after 5 days incubation. This study suggested that microwave assisted coating treatment could rapidly induce the deposition of a uniform protective CDHA layer on the AZ31 surface to improve the biological response of the magnesium alloy.