Abstract
The aim of current research is to study the oxidation resistance of binary magnesium alloys containing Ce at high temperatures to provide a theoretical foundation for the application of magnesium alloys which are applied at high-temperature conditions. The oxidation properties of binary magnesium alloys containing different Ce content at high temperatures have been studied. The thermogravimetric results show that a small amount of Ce (0.2, 0.4 wt. %) addition can improve the oxidation resistance of magnesium alloys at high temperatures. Continuous-distributed Mg12Ce compounds in the two test alloys with high Ce content (≥0.7 wt. %) provided channels to the internal oxidation and thus deteriorated the oxidation resistance. MgO and CeO2 were the primary components which are detected in the oxide films. CeO2 was mainly detected at the inner layer of the film.
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