研究了铸态Cu - 6 0at%Ni(CACu - 6 0Ni)和机械合金化制备的纳米晶Cu - 6 0at%Ni(MACu - 6 0Ni)合金在80 0℃空气中的氧化行为 .结果表明 :CACu - 6 0Ni合金的氧化动力学偏离抛物线规律 ,形成外层为CuO ,内层为疏松、多孔的Cu2 O和NiO混合氧化物层 ,同时沿合金基体发生了Ni的内氧化 ;MACu - 6 0Ni合金的氧化动力学近似遵循抛物线规律 ,合金表面氧化膜外层为很薄一层CuO ,内层为较厚 ,且均匀致密的NiO层 .晶粒细化明显促进了由Cu2 O和NiO混合氧化膜向单一连续NiO膜的转变 .讨论了合金的氧化机制 The oxidation behavior of nanocrystalline Cu - 6 0at% Ni (MACu - 6 0Ni) alloy prepared by as - cast Cu - 60at% Ni (CACu - 60Ni) and mechanical alloying at 80 0 ℃ was studied. The oxidation kinetics of CACu-6 0Ni alloy deviates from the parabolic law, forming the outer layer of CuO, the inner layer of loose and porous mixed oxide layers of Cu 2 O and NiO, and the internal oxidation of Ni along the alloy matrix; The oxidation kinetics of the alloy approximates the parabolic law. The outer oxide layer of the alloy is a thin layer of CuO and the inner layer is a thick, uniform and dense NiO layer. The grain refinement obviously promotes the mixed oxidation of CuO and NiO Film to a single continuous NiO film. The oxidation mechanism of the alloy was discussed