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应用高能量密度等离子体对Ｎｉ３Ａｌ进行微晶化处理，在合金表面获得了晶粒尺寸小于３００ｎｍ的微晶层。对比研究了Ｎｉ３Ａｌ微晶处理前后在氧气中１０００℃高温氧化的行为和规律。发现微晶化处理后的试样氧化膜晶粒被极大地细化，合金中Ａｌ选择氧化得到促进，氧化速率明显降低，氧化动力学服从四次方规律ｘ４＝ｋｐｔ。
Ni3Al was micro-crystallized by high energy density plasma to obtain a microcrystalline layer with a grain size of less than 300 nm on the surface of the alloy. The behavior and regularity of oxidation at 1000 ℃ in oxygen before and after Ni3Al microcrystallization were studied. It is found that the grain size of the oxide film of the sample after the microcrystallization is greatly refined, the selective oxidation of Al in the alloy is promoted, the oxidation rate is obviously reduced, and the oxidation kinetics obeys the fourth law x4 = kpt.