利用萃取方法研究了Cu-Al合金的内氧化产物及其晶 体结构，测定了Al2O3的体积分数.分析表明该方法简单、有效，既可用于内氧化的动 力学研究，又可利用其进行定性定量分析，本实验条件下Cu-Al2O3复合材料的增强体以 晶内纳米γ-Al2O3为主，含有一定量的界面θ-Al2O3和α-Al2O3.
The internal oxidation product and its crystalline s tructure of Cu-Al alloy have been investigated with extraction method in this pa per, and the volume fraction of alumina has also been determined. The analysis i ndicates that this method is effective and easy to carry out,with whihc,both kin etic study of internal oxidation and qualitative and quantitative analysis of th e formed internal oxides can be done. The reinforcements of Cu-Al2O3 composi tes consist of a large amount of nanocrystalline γ-Al2O3 and a certain am ount of boundary θ-Al2O3 and α-Al2O3.
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