| 反相微乳液法制备Ni-B非晶态合金团簇 |
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| 引用本文： | 郑一雄,周绍民. 反相微乳液法制备Ni-B非晶态合金团簇[J]. 华侨大学学报(自然科学版), 2007, 28(1): 42-45 |
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| 作者姓名： | 郑一雄 周绍民 |
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| 作者单位： | 华侨大学,材料科学与工程学院,福建,泉州,362021;厦门大学,化学化工学院,福建,厦门,361005 |
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| 摘 要： | 采用W/O型微乳液法,用KBH4还原Ni(Ac)2制备Ni-B非晶态合金团簇.扫描电镜(SEM)和透射电子显微镜(TEM)测试表明,团簇形貌呈球形,尺寸为10~15 nm,分布较均匀,基本达到单分散.热分析(DSC)测试表明,Ni-B样品的热稳定性明显高于水溶液体系用KBH4还原Ni(Ac)2制得的Ni-B非晶态合金纳米颗粒.热处理实验及XRD测试结果表明,Ni-B非晶态合金团簇的晶化过程包括两个步骤,即Ni-B非晶态合金晶化成晶态Ni-B合金和Ni-B晶态合金分解成纳米晶Ni和单质B.
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| 关 键 词： | Ni-B非晶态合金 微乳液法 团簇 晶化 |
| 文章编号： | 1000-5013（2007）01-0042-04 |
| 修稿时间： | 2006-03-23 |
Preparation of Ni-B Amorphous Alloy Nanoclusters by W/O Microemulsion |
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| ZHENG Yi-xiong,ZHOU Shao-min. Preparation of Ni-B Amorphous Alloy Nanoclusters by W/O Microemulsion[J]. Journal of Huaqiao University(Natural Science), 2007, 28(1): 42-45 |
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| Authors: | ZHENG Yi-xiong ZHOU Shao-min |
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| Affiliation: | 1. College of Material Science and Engineering, Huaqiao University, Quanzhou 362021, China;2. College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005,China |
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| Abstract: | The nearly monodispersed Ni-B amorphous alloy nanoclusters were prepared through the reduced reaction of Ni(Ac)_2 by KBH_4 in W/O.The nearly monodispersed Ni-B amorphous alloy nanoclusters were prepared through the reduction(Ac)_2 by KBH_4 in W/O microemulsion.The DSC Characterization shows that the Ni-B sample exhibits better thermal stability than the nanosize Ni-B amorphous alloy powder prepared from chemical reduction by KBH_4.in aqueous solution.XRD results reveal that the crystallization process of NiB amorphous alloy nanoclusters,which had been heat-treated,includes two steps:one is the transformation of Ni-B amorphous alloy into Ni-B crystalline alloy,the other is the decomposition of Ni-B crystalline alloy into Ni nanocrystalline and free B. |
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| Keywords: | Ni-B amorphous alloy microemulsion nanocluster crystallization |
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