Synthesis of single-phase L1(0)-FeNi magnet powder by nitrogen insertion and topotactic extraction.
Synthesis of single-phase L1(0)-FeNi magnet powder by nitrogen insertion and topotactic extraction.
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DOI：
10.1038/s41598-017-13562-2
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发表时间：
2017-10-16
影响因子：
4.6
通讯作者：
Kita E
中科院分区：
文献类型：
--
作者：
Goto S;Kura H;Watanabe E;Hayashi Y;Yanagihara H;Shimada Y;Mizuguchi M;Takanashi K;Kita E
L10 - 铁镍（FeNi）型四元合金（Tetrataenite）因其良好的性能，是一种很有前景的无稀土永磁材料候选物。在本研究中，通过一种新方法——氮插入和拓扑化学提取（NITE）合成了高度有序的单相L10 - FeNi粉末。在该方法中，通过用氨气氮化A1 - FeNi粉末形成与L10 - FeNi具有相同有序排列的FeNiN。随后，通过拓扑化学反应对FeNiN进行脱氮，得到有序参数为0.71的单相L10 - FeNi。无序相FeNi向L10相的转变使矫顽力从14.5 kA/m提高到142 kA/m。所提出的方法不仅显著加速了L10 - FeNi磁体的开发，还为获得非平衡态的有序合金提供了一种新的合成途径。
Tetrataenite (L10-FeNi) is a promising candidate for use as a permanent magnet free of rare-earth elements because of its favorable properties. In this study, single-phase L10-FeNi powder with a high degree of order was synthesized through a new method, nitrogen insertion and topotactic extraction (NITE). In the method, FeNiN, which has the same ordered arrangement as L10-FeNi, is formed by nitriding A1-FeNi powder with ammonia gas. Subsequently, FeNiN is denitrided by topotactic reaction to derive single-phase L10-FeNi with an order parameter of 0.71. The transformation of disordered-phase FeNi into the L10 phase increased the coercive force from 14.5 kA/m to 142 kA/m. The proposed method not only significantly accelerates the development of magnets using L10-FeNi but also offers a new synthesis route to obtain ordered alloys in non-equilibrium states.
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影响因子：
6.2
作者：
Geng, Yunlong;Ablekim, Tursunjan;Shield, Jeffrey E.
通讯作者：
Shield, Jeffrey E.
影响因子：
2.6
作者：
PETERSEN, JF;AYDIN, M;KNUDSEN, JM
通讯作者：
KNUDSEN, JM
影响因子：
2.3
作者：
Kotsugi, Masato;Mitsumata, Chiharu;Taniguchi, Masaki
通讯作者：
Taniguchi, Masaki
影响因子：
2.9
作者：
ALBERTSEN, JF;KNUDSEN, JM;VISTISEN, L
通讯作者：
VISTISEN, L
影响因子：
2.7
作者：
Diao, XG;Scorzelli, RB;Rechenberg, HR
通讯作者：
Rechenberg, HR