| M 型永磁铁氧体的研究进展 |
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| 引用本文： | 王亦工,陈华辉,周凤颖.M 型永磁铁氧体的研究进展[J].矿冶工程,2004,24(6):73-77. |
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| 作者姓名： | 王亦工 陈华辉 周凤颖 |
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| 作者单位： | 中国矿业大学(北京校区)机电学院材料科学与工程系, 北京100083 |
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| 摘 要： | 对La-Co 替代的M 型高性能永磁铁氧体进行了详细介绍, 包括材料制备的工艺特点, 材料的成分, 显微结构, 内禀参数, 技术磁性能以及温度特性等。研究结果表明:最优化组分为Sr0.7 La0.3 Fe11.7 Co0.3O19 的M 型永磁铁氧体的饱和磁化强度(298 K)比SrFe12O19 永磁铁氧体的大1%～3%, 磁晶各向异性场Ha ≈1766.7 kA/m, 磁晶各向异性 常数K1 ≈4.2 ×106 erg/cm3, 磁性能:Br =445 mT, Hcj =383.6 kA/m,(BH)max =38.6 kJ/m3 。
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| 关 键 词： | M 型永磁铁氧体 La-Co 替代 工艺 磁性能 |
| 文章编号： | 0253-6099(2004)06-0073-05 |
| 收稿时间： | 2004-06-07 |
| 修稿时间： | 2004年6月7日 |
The Development in the Research of M-type Permanent-magnet Ferrite |
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| WANG Yi-gong,CHEN Hua-hui,ZHOU Feng-ying.The Development in the Research of M-type Permanent-magnet Ferrite[J].Mining and Metallurgical Engineering,2004,24(6):73-77. |
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| Authors: | WANG Yi-gong CHEN Hua-hui ZHOU Feng-ying |
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| Affiliation: | China University of Mining and Technology (Beijing campus), Beijing 100083, China |
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| Abstract: | M-type high-performance permanent-magnet ferrite with La-Co as a substitute are discussed in details, including the technical characteristics of material preparation, the chemical compositions of the material, microstructure, intrinsic parameters , technical magnetic properties and their temperature characteristics.The results show that saturation magnetization(298 K) of M-type permanent-magnet ferrite with the optimal composition of Sr0.7 La0.3 Fe11.7 Co0.3O19 is 1 %～ 3 % larger than that of conventional permanent-magnet ferrite of SrFe12O19, with magnetocrystalline anisotropy field Ha ≈1766.7 kA/m, and anisotropy constant K1 ≈4.2 ×106 erg/cm3, the magnetic properties of Br =445 mT, Hcj =383.6 kA/m,(BH)max =38.6 kJ/m3. |
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| Keywords: | M-type ferrite-magnets ferrite substitution with La-Co techniques magnetic properties |
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