MagProBio: coating for tuning the biodegradation rate of magnesium alloys
The patent refers to a hard anodizing process, carried out in non aqueous solution, designed for the growth of a protective coating on magnesium alloys for the control and tuning of the degradation rate of bioresorbable biomedical devices. The biodegreeding rate is brought to a value that keeps the rate of hydrogen development below the threshold acceptable for applications within the human body.
The patent refers to a hard anodizing process (TRL= 3), carried out in a phosphate-containing non aqueous solution, for the growth of a protective coating that allows to tune the degradation rate and ensures the biocompatibility of magnesium alloys for applications in biomedical field. The process is carried out in a solution containing potassium phosphates and glicerol, with a constant temperature of 160°C. Fabrication process can be easily integrated in anodizing plant already present, but using different electrolyte and electric regime, and involves the usage of non toxic and low cost reagents.
- Biodegradable implants.
- Magnesium alloys biocompatibility;
- Tuning of biodegradation rate;
- Uniform coating on samples with variable dimensions and geometries;
- Fabrication process with non toxic and low cost reagents;
- Easy integration in existing anodizing plants.