Preparation method and process of medical magnesium alloy micro-arc oxidation sealing coating
By forming a high-thickness, low-porosity ceramic coating on the surface of magnesium alloy and performing calcium-phosphorus sealing treatment, the problems of degradation rate and uniformity of magnesium alloy materials are solved, corrosion resistance and biocompatibility are improved, and the stability and safety of implantable devices are ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- TIANJIN KANGER MEDICAL DEVICE
- Filing Date
- 2026-04-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing medical magnesium alloy materials suffer from problems such as excessively rapid degradation rate, uneven degradation, poor corrosion resistance, and insufficient biocompatibility during the degradation process, leading to surgical failure and health risks.
A ceramic coating is grown in situ on the surface of a magnesium alloy using a micro-arc oxidation process. By optimizing the electrolyte composition and process parameters, a high-thickness, low-porosity coating is formed. Combined with a calcium-phosphorus sealing process, a dense double-layer protective structure is formed.
It significantly reduces the corrosion rate of magnesium alloys in physiological environments, improves biocompatibility and corrosion resistance, ensures the stability and safety of implanted devices at fracture sites, and reduces surgical pain and medical costs.
Smart Images
Figure CN122406334A_ABST