Micro-arc oxidation as a method of reducing biodegradation of Mg–Ca–Zn alloy

In this work, the influence of the exposure time in the electrolyte during microarc oxidation of the Mg–Ca–Zn alloy on the structural-phase composition and biodegradation is studied. The test results showed that the exposure time is 5 min. not enough to form a uniform coating. The coating is amorphous and consists of elements O, P, Mg with F-based inclusions. It has been established that the formed coatings successfully reduce the biodegradation of the Mg–Ca–Zn alloy, as evidenced by a significant reduction in weight loss under in vitro conditions.