通过控制输出功率、沉积时间、频率等工艺参数,采用高能微弧合金化技术制备出与基体形成冶金结合的Fe_3Al涂层。研究了涂层的显微组织和高温氧化性能。结果表明Fe_3Al涂层在900℃和1000℃空气中氧化时,虽然氧化增重都比电极材料大,但是晶粒细化后的涂层,显著提高氧化膜与基体间的粘附性,氧化膜的剥落得到明显抑制,尤其是在1000℃时更为明显。 By controlling the output power, deposition time, frequency and other process parameters, a high-energy micro-arc alloying technology was used to prepare a Fe_3Al coating which was metallurgically bonded with the substrate. The microstructure and high temperature oxidation properties of the coatings were investigated. The results show that the coating with the grain refinement significantly improves the adhesion between the oxide film and the matrix when the oxidation of the Fe 3 Al coating at 900 ℃ and 1000 ℃ in air is larger than that of the electrode. Of the spalling was significantly inhibited, especially at 1000 ℃ more obvious.