电沉积-热解Y_2O_3薄膜提高Fe_3Al高温氧化膜的保护性

High Temperature Protection Ability of Fe 3Al Oxide Scale Enhanced by Surface applied Y 2O 3 Thin Film

通过电沉积热解方法在Ｆｅ３Ａｌ表面制得Ｙ２Ｏ３薄膜。对有、无薄膜Ｆｅ３Ａｌ试样在９００℃空气中非等周期循环氧化，发现表面施加Ｙ２Ｏ３薄膜能够显著改善氧化膜的塑性和粘附性，提高Ｆｅ３Ａｌ的抗高温氧化性能。

A uniform, dense and defect free Y 2O 3 thin film, which is amorphous at room temperature, was applied on the surface of Fe 3Al by electrodeposition reaction sintering method. The effects of this film on the irregular cyclic oxidation of Fe 3Al at 900 ℃ in the air were studied. It is proved that, by surface applied Y 2O 3 thin film, the plasticity and adherence of Al 2O 3 scales are improved, and the cyclic oxidation resistance of Fe 3Al is also increased.