| 粘结Ni52Mn24.4Ga23.6磁体研究 |
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| 引用本文： | 朱晓莹,张虹,白书欣.粘结Ni52Mn24.4Ga23.6磁体研究[J].材料科学与工程学报,2005,23(3):439-443. |
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| 作者姓名： | 朱晓莹 张虹 白书欣 |
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| 作者单位： | 装甲兵工程学院,材料科学与工程系,北京,100072;装备再制造技术国防科技重点实验室,北京,100072;国防科技大学,材料工程与应用化学系,湖南长沙,410073 |
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| 摘 要： | 真空感应熔炼法制备了多晶Ni52Mn24.4Ga23.6合金,对多晶合金进行了DSC分析和显微组织观察;采用粉末压缩压制的方法制备了粘结Ni52Mn24.4Ga23.6磁体;通过X射线衍射分析,讨论了外应力场和磁场对粘结Ni52Mn24.4Ga23.6磁体马氏体相变的影响;测量了粘结Ni52Mn24.4Ga23.6磁体在磁场下的磁诱发应变.结果表明:室温时粘结磁体在1.2T的磁场下能产生150ppm的饱和伸长应变.
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| 关 键 词： | 多晶Ni52Mn24.4Ga23.6合金 马氏体相变 粘结Ni52Mn24.4Ga23.6磁体 磁诱发应变 |
| 文章编号： | 1004-793X(2005)03-0439-05 |
| 修稿时间： | 2004年6月28日 |
Study on Bonded Ni52Mn24.4Ga23.6 Magnets |
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| ZHU Xiao-ying,ZHANG Hong,BAI Shu-xin.Study on Bonded Ni52Mn24.4Ga23.6 Magnets[J].Journal of Materials Science and Engineering,2005,23(3):439-443. |
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| Authors: | ZHU Xiao-ying ZHANG Hong BAI Shu-xin |
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| Abstract: | Polycrystalline alloy Ni_ 52Mn_ 24.4Ga_ 23.6 was prepared by repeated induction melting and was observed by means of DSC analysis, optical microscopy and scanning microscope. Bonded Ni_ 52Mn_ 24.4Ga_ 23.6 magnets were prepared by powder compression method, and the effects of external stress and magnetic field on the martensitic transformation of bonded Ni_ 52Mn_ 24.4Ga_ 23.6 magnets were discussed by X-ray diffraction. Magnetic-induced strains (MFIS) of bonded Ni_ 52Mn_ 24.4Ga_ 23.6 magnets were measured. The results show that saturated MFIS with an expanse of 150ppm can be obtained by applying a magnetic field of about 1.2T at room temperature. |
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| Keywords: | polycrystalline alloy Ni_ 52Mn_ 24 4Ga_ 23 6 martensitic transformation bonded Ni_ 52Mn_ 24 4Ga_ 23 6 magnet magnetic-induced strain (MFIS) |
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