| Nb在单相Nd2Fe14B纳米晶合金晶化过程中的作用 |
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| 引用本文： | 隋延力,王占勇,包小倩,张茂才,周寿增. Nb在单相Nd2Fe14B纳米晶合金晶化过程中的作用[J]. 稀有金属材料与工程, 2009, 38(7): 1164-1168 |
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| 作者姓名： | 隋延力 王占勇 包小倩 张茂才 周寿增 |
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| 作者单位： | 1. 北京科技大学,新金属材料国家重点实验室,北京,100083
2. 上海应用技术学院,上海,200235 |
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| 摘 要： | 利用X射线衍射、透射电镜和三维原子探针(three-dimensional atom probe,简称3DAP)等研究Nb在单相Nd2Fe14B纳米晶永磁合金的作用机制.结果表明,Nb的添加提高了合金的非晶形成能力和非晶的热稳定性,使得合金最佳晶化温度升高.三维原子探针分析表明,Nb一方面分布在非晶基体中,另一方面在淬态薄带中存在不同程度的偏聚,这些Nb富集区中存在大量B元素,稀土含量很少,甚至不存在,含有部分Fe元素.Nb富集区的存在阻碍新生Nd2Fe14B相的长大,使晶化后的组织细小且均匀,提高了合金的磁性能.
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| 关 键 词： | 纳米晶 晶化 三维原子探针 |
| 收稿时间： | 2008-06-22 |
The Roles of Nb in Crystallization Procedure of Nano-Crystal Nd2Fe14B Permanent Magnet |
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| Sui Yanli,Wang Zhanyong,Bao Xiaoqian,Zhang Maocai and Zhou Shouzeng. The Roles of Nb in Crystallization Procedure of Nano-Crystal Nd2Fe14B Permanent Magnet[J]. Rare Metal Materials and Engineering, 2009, 38(7): 1164-1168 |
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| Authors: | Sui Yanli Wang Zhanyong Bao Xiaoqian Zhang Maocai Zhou Shouzeng |
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| Affiliation: | 1. State Key Laboratory for Advanced Metals and Materials;University of Science and Technology Beijing;Beijing 100083;China;2. Shanghai Institute of Technology;Shanghai 200235;China |
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| Abstract: | The roles of Nb played in crystallization procedure of nano-crystal Nd2Fe14B permanent magnet were investigated by XRD,TEM and 3DAP. The results revealed that the addition of Nb improved the glass formation ability of the alloys and the thermal stability of the as-spun amorphous ribbons,as well as improving the optimum crystallization temperature. Nb atoms,together with more B atoms and some Fe atoms,had some enrichment in the as-spun ribbons,but few or no Nd atoms were found at these Nb-enriched regions. N... |
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| Keywords: | Nd-Fe-B Nb |
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