Reaction thermodynamics and kinetics on in-situ Al₂O₃/Cu composites

来源期刊：中国有色金属学报(英文版)1999年第3期

论文作者：李国彬 武建军 郭全梅 姜延飞 申玉田 雷廷权

文章页码：617 - 622

Key words：Al₂O₃/Cu composites; internal oxidation; thermodynamics; kinetics

Abstract: The preferred internal oxidation of aluminum in Cu-Al alloy was used to obtain in-situ Al₂O₃/Cu composites. The reinforcement particles were mainly γ-Al₂O₃, some θ-Al₂O₃ and a little α-Al₂O₃. Thermodynamics analyses show that the chemical reactions are 3Cu₂O+2Al=6Cu+Al₂O₃ or 3CuO+2Al=3Cu+Al₂O₃. A related equilibrium diagram was drawn. The experiments and investigation show that the formation rate of Al₂O₃ was controlled by the diffusion of oxygen in matrix.