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采用机械合金化法制备了两相颗粒极细的Ｃｕ－２０Ｃｒ与Ｃｕ－４０Ｃｒ合金，研究其在７００～８００℃，０．１ＭＰａ纯氧气中的氧化．ＭＡＣｕ－２０Ｃｒ及ＭＡＣｕ－４０Ｃｒ合金２４ｈ氧化后均形成了连续的Ｃｒ２Ｏ３层，这主要由于两相颗粒的细化，加快了Ｃｒ颗粒的溶解，缩短了Ｃｒ的扩散距离，从而有效地促进Ｃｒ２Ｏ３层的形成．
The Cu-20Cr and Cu-40Cr alloys with very fine two-phase particles were prepared by mechanical alloying and the oxidation of pure Cu-20Cr and Cu-40Cr was studied at 700-800 ℃ and 0.1MPa pure oxygen. After continuous oxidation of MACu-20Cr and MACu-40Cr alloys, the continuous Cr2O3 layer was formed after 24h oxidation. This was mainly due to the refinement of the two-phase particles, which accelerated the dissolution of Cr particles and shortened the diffusion distance of Cr, thereby effectively promoting the Cr2O3 layer form.