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对ＣｕＡｌ合金内氧化热力学条件进行了研究，结果表明，其上限氧分压应小于３．５×１０－３Ｐａ，下限氧分压随合金中［Ａｌ］浓度而改变．［Ａｌ］浓度提高，下限氧分压降低；［Ａｌ］向内氧化层逆扩散是内氧化相长大的原因。合金中［Ａｌ］量越高，越易粗大化；内氧化层的较高导电、导热性是内氧化层中残存［Ａｌ］、［Ｏ］极低所致；工艺方法对比实验发现ＣＯ２ＣＯ混合气，氧势易调，是ＣｕＡｌ合金理想的内氧化介质，适于工业化生产．
The results show that the upper limit oxygen partial pressure should be less than 3.5 × 10-3Pa, and the lower limit partial pressure of oxygen changes with the [Al] concentration in the alloy. The concentration of [Al] increases and the lower partial pressure of oxygen decreases. [Al] The reverse diffusion of the inward oxidation layer is the cause of the long internal oxidation phase. The higher the amount of [Al] in the alloy, the easier it is to be coarser; the higher conductivity and thermal conductivity of the inner oxide layer are caused by the extremely low residual [Al] and [O] in the inner oxide layer; Mixture, easy to adjust the oxygen potential, is an ideal Cu-Al alloy internal oxidation medium, suitable for industrial production.