| 钡铁氧体磁粉颗粒尺度的扫描电镜测量 |
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| 引用本文： | 徐健,白新德,韦丹,宋阳,武庆兰,要继忠,吕宝顺.钡铁氧体磁粉颗粒尺度的扫描电镜测量[J].清华大学学报(自然科学版),1999,39(10):2. |
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| 作者姓名： | 徐健 白新德 韦丹 宋阳 武庆兰 要继忠 吕宝顺 |
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| 作者单位： | 1. 清华大学,材料科学与工程系,北京,100084
2. 北京矿冶研究院,磁性材料研究所,北京,100054 |
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| 摘 要： | 为了迅速、准确地测定钡铁氧体磁粉颗粒的厚度、直径和厚径比的统计分布，采用对磁颗粒施加外加电磁场的方法，使各个磁颗粒的易磁化轴方向趋于一致，并用扫描电子显微镜观察钡铁氧体磁粉颗粒。实验发现： 在０～０．６ Ｔ范围内，外加磁感应强度越大，磁颗粒的取向程度越好。对较佳工艺条件下得到的扫描电镜照片进行测量和分析，得到颗粒的厚度、直径和厚径比的函数分布。
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| 关 键 词： | 钡铁氧体 扫描电子显微镜 颗粒尺度 |
| 修稿时间： | 1998-09-14 |
SEM measurement on Ba-Ferrite fine magnetic particles size |
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| XU Jian,BAI Xinde,WEI Dan,SONG Yang,WU Qinglan,YAO Jizhong,L Baoshun.SEM measurement on Ba-Ferrite fine magnetic particles size[J].Journal of Tsinghua University(Science and Technology),1999,39(10):2. |
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| Authors: | XU Jian BAI Xinde WEI Dan SONG Yang WU Qinglan YAO Jizhong L Baoshun |
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| Institution: | XU Jian,BAI Xinde,WEI Dan,SONG Yang,WU Qinglan,YAO Jizhong,L(U) Baoshun |
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| Abstract: | To measure the size of Ba Ferrite fine magnetic particles, electromagnetic field was employed to drive the fine magnetic particles displace in order, then scanning electron microscope (SEM) was used to observe and measure the size of Ba Ferrite fine magnetic particles. The analysis results indicate that the higher electromagnetic field leads to better arrangement of the fine magnetic particles at the range of 0~0.6T. Finally, the size of Ba Ferrite fine magnetic particles was measured and analyzed from SEM image which was treated using a better technology, and the functions of the particle thickness, diameter and their ratio were obtained. |
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