| 高能球磨诱发Al,Si/CuO固态还原反应动力学 |
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| 引用本文： | 马明亮,席生歧,周敬恩.高能球磨诱发Al,Si/CuO固态还原反应动力学[J].材料热处理学报,2005,26(4):25-28. |
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| 作者姓名： | 马明亮 席生歧 周敬恩 |
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| 作者单位： | 九江学院材料科学与工程学院,江西,九江,332005;西安交通大学材料科学与工程学院,陕西,西安,710049 |
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| 摘 要： | 采用差热分析（DTA）和X射线衍射（XRD）技术研究了球磨燃烧反应发生前不同球磨时间下Al／CuO和Si／CuO体系反应动力学和微观结构变化。结果表明：高能球磨诱发燃烧反应的发生是粉末颗粒细化和均匀化与局部反应、球磨介质污染两方面竞争的结果。球磨时CuO的缺陷形成速率或者氧离子从CuO点阵中通过短路扩散路径向反应界面迁移是球磨诱发Al／CuO燃烧反应的控制步骤。
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| 关 键 词： | 高能球磨 固态还原反应 反应动力学 |
| 文章编号： | 1009-6264（2005）04-0025-04 |
| 收稿时间： | 2004-10-26 |
| 修稿时间： | 2004-10-262005-01-31 |
Kinetics of Solid-state Reduction Reactions Induced by High-energy Ball Milling in the Al/CuO and Si/CuO Systems |
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| MA Ming-liang,XI Sheng-qi,ZHOU Jing-en.Kinetics of Solid-state Reduction Reactions Induced by High-energy Ball Milling in the Al/CuO and Si/CuO Systems[J].Transactions of Materials and Heat Treatment,2005,26(4):25-28. |
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| Authors: | MA Ming-liang XI Sheng-qi ZHOU Jing-en |
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| Affiliation: | MA Ming-liang~1,XI Sheng-qi~2,ZHOU Jing-en~2 |
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| Abstract: | The reaction kinetics and the change in microstructures of Al/CuO and Si/CuO powder mixtures milled for different time before ignition have been investigated using XRD and DTA techniques. The results indicate that the ignition of a combustion reaction induced by high-energy ball milling depends on the competition of the refining and mixing of reactant particles with the product from local reactions and contamination from milling tools. It is suggested that the ignition of Al/CuO triggered by ball milling is dependent on the rate of formation of crystalline defects in CuO or the transference of oxygen ions via short-diffusion-path to reaction interfaces. |
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| Keywords: | high-energy ball milling solid-state reduction reaction reaction kinetics |
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