| MmNi5-x(CoAlMn)x/Mg纳米晶复合储氢合金的吸氢性能 |
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| 引用本文： | 朱文辉,高岩,李隆,李祖鑫,朱敏.MmNi5-x(CoAlMn)x/Mg纳米晶复合储氢合金的吸氢性能[J].稀有金属,1999(3). |
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| 作者姓名： | 朱文辉 高岩 李隆 李祖鑫 朱敏 |
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| 作者单位： | 华南理工大学机械电子工程系,广州,510641 |
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| 基金项目： | 国家自然科学基金,国家教委优秀青年教师基金,广东省自然科学基金 |
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| 摘 要： | 研究了机械合金化制备的ＭｍＮｉ５－ｘ（ＣｏＡｌＭｎ）ｘ／Ｍｇ纳米晶复合储氢合金的吸氢特性。通过测定不同镁含量的ＭｍＮｉ５－ｘ（ＣｏＡｌＭｎ）ｘ／Ｍｇ纳米晶复合储氢合金的吸氢ＰＣＴ曲线，考察了镁含量对其吸氢特性的影响。根据对吸氢速度的测定研究了机械合金化对储氢合金的吸氢动力学特性的影响。机械合金化制备的纳米晶复合储氢合金的活化性能与ＭｍＮｉＭ５－ｘ（ＣｏＡｌＭｎ）ｘ铸态合金相比有较大的提高，不需活化或只需一次活化即可吸氢，吸氢量及吸氢的动力学性能与铸态合金相比也有很大的提高。最后对机械合金化形成的纳米晶吸氢特性进行了分析。
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| 关 键 词： | 储氢合金 机械合金化 纳米复合材料 |
Study on hydrogen Absorption Property of MmNi5-x(CoAlMn)x/Mg Nanocrystalline hydrogen storage Composite |
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| Zhu Wenhui,Gao Yan,Li Long,Li Zuxin,Zhu Min.Study on hydrogen Absorption Property of MmNi5-x(CoAlMn)x/Mg Nanocrystalline hydrogen storage Composite[J].Chinese Journal of Rare Metals,1999(3). |
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| Authors: | Zhu Wenhui Gao Yan Li Long Li Zuxin Zhu Min |
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| Abstract: | The hydrogen absorption property of MmNi5-x(CoAlMn)x/Mg nanocrystalline hydrogen storage composite prepared by mechanical alloying (MA) was studied. The influence of Mg content on the hydrogen absorption property was evaluated by measuring the hydrogen absorption PCT curve. According to the hydrogen absorption rate test, The effect of the MA process on the of the hydrogen absorption kinetics was also studied. The study indicated that the nanocrystalline hydrogen storage composite has very good activation property. Only one time activation treatment cycle or no activation treatment is required for the composite prepared by MA. Hydrogen absorbed quantity and the kinetics also improve than the ascast MmM5 alloys. Finally, the hydrogen absorption property was discussed according to the microstructure characters of nanocrystalline materials prepared by MA. |
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| Keywords: | Hydrogen storage alloy Mechanical alloying Nanocrystalline composite |
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