Regeneration Ability of Oxidation Film on Ignition-proof Mg-alloy with Ca
The Mg-9%Al-3%Ca magnesium alloy was heated to 700 ℃,forming a surface oxide film,the oxidized Mg-alloy was obtained after removing the surface oxidation film at room temperature;and then again heated and oxided,re-forming oxide film.And the Mg-alloy was analyzed by SEM and studied by high-temperature oxidation kinetics.The results show that the re-formed oxidation film of oxidized Mg-9%Al-3%Ca alloy is very smooth and denser,and the oxidation dynamics curves at 400,600 and 700 ℃ follow parabolic law.It illustrates that the regeneration ability of oxidation film on Mg-9%Al-3%Ca Mg-alloy was good.