| Thermal behavior and structure of Fe84Nb7B9 nanocrystalline powders |
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| 作者姓名： | 曹玲飞 汪明朴 谢丹 郭明星 李周 谭望 徐根应 |
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| 作者单位： | School of Materials Science and Engineering Central South University Changsha 410083 China，School of Materials Science and Engineering Central South University Changsha 410083 China，School of Materials Science and Engineering Central South University Changsha 410083 China，School of Materials Science and Engineering Central South University Changsha 410083 China，School of Materials Science and Engineering Central South University Changsha 410083 China，School of Materials Science and Engineering Central South University Changsha 410083 China Zhuzhou Cemented Carbide Group Co Ltd Zhuzhou 412000 China，School of Materials Science and Engineering Central South University Changsha 410083 China Department of Science and Technology of Anhui Province Hefei 2300 01 China |
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| 基金项目： | Project（2001BA310A03-1） supported by the National Key Technologies R ＆ D Program of China during the 10th Five-year Plan Period; Project（05JJ30095） supported by the Natural Science Foundation of Hunan Province, China. |
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| 摘 要： | 1 Introduction Fe84Nb7B9 nanocrystalline alloy is an excellent type of soft magnetic materials, characterized by its high saturation induction, permeability and good noise degeneration property1, 2]. It can effectively promote the miniature, light, energ…
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| 关 键 词： | Fe84Nb7B9 纳米晶 非晶态合金 热分析 结构 |
| 收稿时间： | 2005-08-09 |
| 修稿时间： | 2005-11-18 |
Thermal behavior and structure of Fe84Nb7B9 nanocrystalline powders |
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| CAO Ling-fei,WANG Ming-pu,XIE Dan,GUO Ming-xing,LI Zhou,TAN Wang,XU Gen-ying.Thermal behavior and structure of Fe84Nb7B9 nanocrystalline powders[J].Transactions of Nonferrous Metals Society of China,2006,16(2):299-303. |
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| Authors: | CAO Ling-fei WANG Ming-pu XIE Dan GUO Ming-xing LI Zhou TAN Wang XU Gen-ying |
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| Affiliation: | 1. Laboratory of Biomedical Nanotechnology (NanoBio), Universidade do Vale do Paraíba (Univap), Av. Shishima Hifumi 2911, São José dos Campos, SP 12244-000, Brazil;2. Associated Laboratory of Sensors and Materials, National Institute for Space Research (INPE), Av. dos Astronautas 1758, São José dos Campos, SP 12227-010, Brazil |
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| Abstract: | The thermal behavior of Fe84Nb7B9 nanocrystalline powders were analyzed by DTA, XRD and TEM measurements. The results show that nanocrystalline powders with grain size of less than 10 nm can be prepared by mechanical alloying. After annealed below 770 °C, the obtained powders remain in the scale of nanometer without new phases formed, exhibiting good thermal stability. On its DTA curve, a wide temperature interval of 450 °C between its two exothermic peaks can be observed. The powders in as-milled state has bcc structure of supersaturated solid solution type, and nanocrystalline together with amorphous phases can be observed in the powder annealed at 350 °C, which is beneficial for the good soft magnetic properties. |
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| Keywords: | Fe84Nb7B9 nanocrystalline amorphous phases thermal behavior magnetic properties |
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