通过高能量密度等离子体表面处理方法在Ｆｅ３Ａｌ表面获得纳米级微晶，显著提高了Ｆｅ３Ａｌ的抗高温循环氧化性能。实验表明，微晶Ｆｅ３Ａｌ在氧化过程中表面氧化物形核率极大提高，形成了微晶氧化膜。该氧化膜很薄，膜中应力很小，蠕变性能得到提高，微晶氧化物长大的同时松弛膜中一部分应力，因而具有极佳的塑性和粘附性。 The nano-scale crystallites obtained on the surface of Fe3Al by high energy density plasma surface treatment significantly improve the cyclic oxidation resistance of Fe3Al. The experimental results show that the surface oxide nucleation rate greatly increases during the oxidation of microcrystalline Fe3Al, forming a microcrystalline oxide film. The oxide film is very thin, the stress in the film is small, the creep property is improved, and the microcrystalline oxide grows while relaxing a part of the stress in the film, thereby having excellent plasticity and adhesiveness.