The oxidation properties of MgF2 particles in hydrofluorocarbon/air atmosphere at high temperatures

The high temperature oxidation properties of magnesium fluoride powders in the atmosphere of air containing hydrofluorocarbon (HFC-134a) were characterized by EDS, SEM, XRD, and gravimetric analyses. The results showed that the oxidation property of magnesium fluoride powder was related to the concentration of HFC-134a, temperature and reaction time. With the concentration of HFC-134a decreasing, the temperature rising and the reaction time prolonging, the extent of magnesium fluoride oxidation increased. This result is great significance for further study of the protective theory of fluorine-containing gases on Mg and its alloys.