Effect of strontium doping concentration on the degradation behaviour and cytocompatibility of micro‑arc oxidation coated magnesium alloy
Year: 2026
Type: article
Abstract: Magnesium alloys show promise for oral guided bone regeneration (GBR) membranes, but their corrosion resistance needs improvement. Micro-arc oxidation (MAO) enhances corrosion resistance, yet the micropores in the MAO coating reduce its protective effect. In this work, strontium (Sr) – with osteogenic-promoting and pore-sealing properties – was incorporated into the coating. The effects of different Sr concentrations on corrosion resistance and cytotoxicity were investigated. The results showed that at 1 g/L Sr, the Sr-phosphorus compounds effectively sealed the micropores. However, higher Sr contents deteriorated the degree of film formation, causing micropore aggregation and micro-cracks, which lowered the corrosion resistance. Sr incorporation improved the cytocompatibility; at 1 and 3 g/L, the cell proliferation rates exceeded 90%. In conclusion, the samples prepared with 1 g/L Sr exhibit the most promising application prospects.
Source: Materials Technology
Language: English
Subfield: Biomaterials
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7204944216