Abstract
A calcium phosphate coating was prepared on the surface of micro-arc oxidized magnesium by a chemical method. The microstructure evolution of the coating was characterized by X-ray diffraction, Fourier-transformed infrared spectroscopy and scanning electron microscopy. The results showed that Ca 10(PO 4) 6(OH) 2 (HA) was firstly formed on the surface of micro-arc oxidized magnesium, followed by flake-like CaHPO 4·2H 2O (DCPD). The solution pH and Ca 2+ concentration had intense influence on the formation of calcium phosphate coating. Acidic Ca 2+ enrichment solution was favourable for HA formation on the surface of micro-arc oxidized magnesium. High concentration of HPO 4 2− and low concentration of Ca 2+ in acidic solution improved the formation of DCPD coating.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call