| HDDR NdFeB磁粉的表面缺陷与成因 |
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| 引用本文： | 刘旭波,裘宝琴.HDDR NdFeB磁粉的表面缺陷与成因[J].材料科学与工艺,1999,7(4):25-27. |
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| 作者姓名： | 刘旭波 裘宝琴 |
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| 作者单位： | 北京科技大学材料学院!北京100083 |
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| 基金项目： | 国家863 计划新材料领域资助项目!Z37 － 02 |
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| 摘 要： | 利用扫描电子显微术和Ｘ射线衍射分析技术研究了ＨＤＤＲＮｄＦｅＢ磁粉的表面缺陷与成因，发现ＨＤＤＲＮｄＦｅＢ磁粉的表面缺陷主要是表面微裂纹，其形成原因主要是Ｎｄ２Ｆｅ１４Ｂ化合物在氢化一歧化过程中体积膨胀所导致的内应力。
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| 关 键 词： | 扫描电子显微术 NdFeB 表面缺陷 磁粉 HDDR |
HDDR NdFeB Magnet powder surface defects and their causes |
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| LIU Xu bo,QIU Bao qin,XIAO Yao fu,ZHANG Zheng yi,WANG Run.HDDR NdFeB Magnet powder surface defects and their causes[J].Materials Science and Technology,1999,7(4):25-27. |
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| Authors: | LIU Xu bo QIU Bao qin XIAO Yao fu ZHANG Zheng yi WANG Run |
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| Abstract: | HDDR NdFeB magnet powder surface defects and their causes are investigated via Sanning Electron Microscopy(SEM) and X-Ray Diffraction Analysis and it is found that HDDR NdFeB magnet powder surface defects include surface micro-flaws and the cause for micro-flaw is internal stress, which is induced by the volume expanasion during hydrogenation-decomposition process of Nd 2Fe 14 B. |
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| Keywords: | sanning electron microscopy NdFeB surface defects |
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