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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials >Internal oxidation of dilute Cu-Al alloy powers with oxidant of Cu_2O
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Internal oxidation of dilute Cu-Al alloy powers with oxidant of Cu_2O

机译：Cu_2O氧化剂对稀Cu-Al合金粉末的内部氧化

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摘要

The mechanisms responsible for the nucleation, growth and coarsening of Al_2O_3 particles in dilute Cu-Al alloys during internal oxidation have been investigated, and the alumina morphologies produced have been studied by electron microscopy using two-stage preshadowed carbon replica method. The alumina particle size has been observed to increase with increasing temperature of oxidation, with increasing time of oxidation, and with decreasing oxygen resource coefficient over the experimental range. These results indicate that the alumina particle size is determined by a competition between the rate of nucleation as the internal oxidation front passes and the subsequent growth and coarsening rates of the particles.
机译：研究了内部氧化过程中导致稀Cu-Al合金中Al_2O_3颗粒成核，生长和粗化的机理，并通过电子显微镜使用两阶段预阴影碳复制法研究了生成的氧化铝形态。已经观察到在实验范围内，氧化铝粒径随着氧化温度的升高，氧化时间的增加以及氧资源系数的降低而增加。这些结果表明，氧化铝颗粒的大小取决于内部氧化前沿通过时的成核速率与随后的颗粒生长和粗化速率之间的竞争。

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