Study on structure and properties of titanium‐6 aluminum‐7 niobium alloy microarc oxidation‐gelatin composite film

Titanium‐6 aluminum‐7 niobium alloy, known for its excellent biocompatibility, mechanical strength, and corrosion resistance, is an important choice for bone implants. Through selenium dioxide modification and the preparation of a micro‐arc oxidation‐gelatin composite film, a gelatin layer approximately 1 micrometer thick was formed, with some micropores exposed. Electrochemical tests indicated an increase in corrosion current density, while contact angle tests showed improved wettability of the film. In vitro mineralization experiments demonstrated higher hydroxyapatite deposition capacity of the composite film, indicating significantly enhanced bioactivity and mineralization performance.