Magnesium alloys as biodegradable metal implants in orthopaedic research received a lot of interest in recent years. They have\r\nattractive biological properties including being essential to human metabolism, biocompatibility, and biodegradability. However,\r\nmagnesium can corrode too rapidly in the high-chloride environment of the physiological system, loosing mechanical integrity\r\nbefore the tissue has sufficiently healed.Hydroxyapatite (HAp) coating was proposed to decrease the corrosion rate and improve the\r\nbioactivity of magnesium alloy. Apatite has been cathodically deposited on the surface of Mg alloy from solution that composed of\r\n3mMCa(H2PO4)2 and 7mMCaCl2 at various applied potentials.Thegrowing ofHAp was confirmed on the surface of the coatings\r\nafter immersion in SBF solution for 7 days. The coating obtained at -1.4V showed higher corrosion resistance with bioactive\r\nbehaviors.
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