Method of preparing coating of biomedical magnesium alloys and magnesium or magnesium alloy comprising the coating

摘要

A method including: employing pure magnesium or a magnesium alloy as a substrate material, and sanding and cleaning the substrate material; preparing an electrolyte including 0.8-8 mmol/L of Zn²⁺, 30-50 mmol/L of Ca⁺, 15-35 mmol/L of H₂PO₄⁻, 0-0.5 mol/L of NaNO₃, and 0-0.05 mmol/L of a magnesium ion complexing agent; employing the substrate material as a cathode, a graphite flake as an anode, heating the electrolyte to a temperature of between 60 and 90° C., and synchronously immersing the cathode and the anode into the electrolyte; and implementing an electrochemical deposition method in the electrolyte for between 20 and 60 min.