| 粉末混合烧结法制备MnBi永磁合金的研究 |
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| 引用本文： | 黄潇,李传健,李卫.粉末混合烧结法制备MnBi永磁合金的研究[J].金属功能材料,2006,13(2):14-16. |
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| 作者姓名： | 黄潇 李传健 李卫 |
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| 作者单位： | 钢铁研究总院功能材料研究所,北京,100081 |
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| 摘 要： | 本研究采用粉末混合烧结法制备永磁MnBi合金.用SEM观察烧结合金的微观组织,以考察MnBi磁性相的成相情况.实验发现,采用粉末混合烧结法很难制备出纯度很高的MnBi永磁合金,烧结后的磁选过程是很必要的.MnBi磁体矫顽力随粒度的降低而提高,扁圆片型坯体的磁性相生成率明显高于传统的圆柱型坯体.对于低温长时间保温处理后的样品其磁粉性能Br=4500Gs;Hci=8700Oe;（BH）max=3.8MGOe.
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| 关 键 词： | 粉末混合烧结 永磁性能 |
| 文章编号： | 1005-8192(2006)02-0014-03 |
| 收稿时间： | 2005-06-03 |
| 修稿时间： | 2005年6月3日 |
Preparation of MnBi Permanent Alloy Using Powder Technique |
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| HUANG Xiao,LI Chuan-jian,LI Wei.Preparation of MnBi Permanent Alloy Using Powder Technique[J].Metallic Functional Materials,2006,13(2):14-16. |
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| Authors: | HUANG Xiao LI Chuan-jian LI Wei |
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| Abstract: | MnBi alloy was prepared using powder technique.The alloy was investigated by SEM to examine the formation of LTP MnBi.It is concluded from the experiment that it is very difficult to prepare high purity of MnBi alloy,in order to improve the purity,it is necessary to have a magnetic separation after sintering.The coercivity increases with the ball milling time.The rate of MnBi magnetic phase of wafer sample is much more than the column one.A MnBi alloy prepared by sintering in low temperature for long time is examed,the result is B_r=0.45T(4500Gs);H_(ci)=693kA/m(8700Oe);(BH)_(max)=30.2kJ/m~3(3.8MGOe). |
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| Keywords: | MnBi |
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