| 镁在Al2O3／Al-Mg-Si复合材料中的作用 |
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| 引用本文： | 周世权,熊惟皓.镁在Al2O3／Al-Mg-Si复合材料中的作用[J].稀有金属材料与工程,2006,35(11):1779-1782. |
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| 作者姓名： | 周世权 熊惟皓 |
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| 作者单位： | 华中科技大学,湖北,武汉,430074 |
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| 摘 要： | 研究了镁对Al-Mg-Si合金熔体氧化热力学与动力学的作用，以及对Al2O3／Al-Mg-Si复合材料组织与性能的作用。热力学与动力学分析表明：镁促进了Al2O3的形核和长大，Al2O3／Al复合材料的性能改善是由于尖金石（MgAl2O4）的分析所导致的组织细化。但在合金中，镁含量太高或太低都对Al2O3的形核和长大不利。
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| 关 键 词： | 热力学与动力学 氧化 组织与性能 复合材料 |
| 文章编号： | 1002-185X(2006)11-1779-04 |
| 收稿时间： | 2005-11-21 |
| 修稿时间： | 2005年11月21 |
The Effects of Magnesium in Al2O3/Al-Mg-Si Composites |
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| Zhou Shiquan,Xiong Weihao.The Effects of Magnesium in Al2O3/Al-Mg-Si Composites[J].Rare Metal Materials and Engineering,2006,35(11):1779-1782. |
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| Authors: | Zhou Shiquan Xiong Weihao |
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| Affiliation: | Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | The effect of magnesium on thermodynamics and kinetics of oxidation of melted Al-Mg-Si alloy, the microstructure and properties of Al2O3/Al-Mg-Si composites were studied in this paper. It has been found that magnesium promotes nucleating and growing of Al2O3 in Al2O3/Al composite by analysis of thermodynamics and kinetics. The properties of Al2O3/Al composite were improved by microstructure refining due to spinel (MgAl2O4) decomposing. But too high or too low content of Mg in the alloy is disadvantageous for Al2O3 nucleating and growth. |
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| Keywords: | thermodynamics and kinetics oxidation microstructure and properties Al2O3/Al-Mg-Si composites |
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