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Ti對高B含量納米復(fù)合Nd9.4Fe79.6-xTixB11永磁合金顯微結(jié)構(gòu)和磁性能的影響
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Effects of Ti Addition on Microstructure and Magnetic Properties of B-rich Nd9.4Fe79.6-xTixB11 Nanocrystalline Alloys
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    摘要:

    研究了Ti添加對Nd9.4Fe79.6-xTixB11(x=0, 1, 2, 4, 6) 合金顯微結(jié)構(gòu)和磁性能的影響。結(jié)果表明，添加Ti能抑制Nd9.4Fe79.6-xTixB11合金中Nd2Fe23B3和Fe3B相的形成及α-Fe相的析出和長大，促進(jìn)Nd2Fe14B相的形成。當(dāng)Ti添加到一定量時(shí)，Ti能以TiB2質(zhì)點(diǎn)的形式從合金中析出，TiB2質(zhì)點(diǎn)能夠抑制晶粒的長大，改善合金的顯微結(jié)構(gòu)。綜合性能比較佳的Nd9.4Fe75.6Ti4B11合金薄帶最佳退火工藝下剩磁Br為0.87 T，矯頑力Hcj達(dá)到931

    Abstract:

    The effects of Ti addition on the microstructure and magnetic properties of Nd9.4Fe79.6-xTixB11(x=0, 1, 2, 4, 6)nanocrystalline alloys were investigated. The results show that Ti addition suppresses the formation of unfavorable soft Nd2Fe23B3 and Fe3B phases, and promotes the formation of Nd2Fe14B phases. When the Ti content reaches a certain amount, Ti may precipitate as TiB2 from the alloys. TiB2 may serve as inoculants and promotes uniform nucleation, and thus increases the exchange coupling between the hard and soft phases. As a result, excellent magnetic properties of Br=0.87 T, Hcj=931 kA/m and (BH)max=115.4 kJ/m3 are achieved in Nd9.4Fe75.6Ti4B11 alloy ribbons.

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李 順,白書欣,張 虹,陳 柯,肖加余. Ti對高B含量納米復(fù)合Nd9.4Fe79.6-xTixB11永磁合金顯微結(jié)構(gòu)和磁性能的影響[J].稀有金屬材料與工程,2009,38(3):380~383.[Li Shun, Bai Shuxin, Zhang Hong, Chen Ke, Xiao Jiayu. Effects of Ti Addition on Microstructure and Magnetic Properties of B-rich Nd9.4Fe79.6-xTixB11 Nanocrystalline Alloys[J]. Rare Metal Materials and Engineering,2009,38(3):380~383.]
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  • 收稿日期:2008-02-21
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