Effect of intermediate argon treatment on microstructure and anisotropy of HDDR-treated Nd-Fe-B-based alloy powders

被引：0
|
作者：
Itakura, M [1 ]
Mishima, K [1 ]
Eshima, M [1 ]
Kuwano, N [1 ]
Oki, K [1 ]
Nakayama, R [1 ]
Ishii, Y [1 ]
Morimoto, K [1 ]
机构：
[1] Kyushu Univ, Dept Appl Sci Elect & Mat, Kasuga, Fukuoka 8168580, Japan
来源：
JAPAN INSTITUTE OF METALS, PROCEEDINGS, VOL 12, (JIMIC-3), PTS 1 AND 2: SOLID - SOLID PHASE TRANSFORMATIONS | 1999年
关键词：
hydrogenation-decomposition-desorption-recombination (HDDR) process; Nd-Fe-B magnet; transmission electron microscopy; microstructure; magnetic anisotropy;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Changes in microstructure of Nd-Fe-Co-B-Ga-Zr and Nd-Dy-Fe-Co-B-Ga-Zr alloys with the intermediate argon (IA) treatment added in the hydrogenation-decomposition-desorption-recombination (HDDR) process were investigated by transmission electron microscopy (TEM). It was found that during the IA treatment only alpha-(Fe,Co) grains grow rapidly and NdH2 particles almost keep their initial size. Selected area electron diffraction (SAED) analysis reveals that preferred orientation alignment of the alpha-(Fe,Co) grains is improved by the IA treatment. It is suggested that the rapid growth of alpha-(Fe,Co) grains during the IA treatment leads the recombined Nd-2(Fe,Co)(14)B fine grains to improve the alignment of c-axes, and therefore to achieve a significant magnetic anisotropy.
引用
收藏
页码：233 / 236
页数：4
相关论文
共 50 条
  • [41] Applied Magnetic Field Increases Magnetic Anisotropy in HDDR-Processed Nd-Fe-B Alloy
    Tener, Zachary P.
    Liu, Xubo
    Nlebedim, Ikenna C.
    Kramer, Matthew J.
    Mcguire, Michael A.
    Kesler, Michael S.
    METALS, 2024, 14 (03)
  • [42] Effect of temperature and pressure conditions on phase evolution and magnetic anisotropy in d-HDDR process for Nd-Fe-B powders.
    Horikawa, T.
    Matsuura, M.
    Sugimoto, S.
    Yamazaki, M.
    Mishima, C.
    2015 IEEE MAGNETICS CONFERENCE (INTERMAG), 2015,
  • [43] Thermodynamic and microstructure studies of the HDDR treatment in the Sm-Fe-N and Nd-Fe-B compound
    Sugimoto, S
    Ohga, S
    Inomata, K
    Okada, M
    Suzuki, K
    Konno, T
    Hiraga, K
    RARE EARTH MAGNETS AND THEIR APPLICATIONS, 2002, : 636 - 643
  • [44] Effect of heat treatment on microstructure and coercivity of the Nd-Pr-Fe-B alloy
    Liu, Ping
    Lin, Bing
    Huang, Peiyun
    Zhongnan Kuangye Xueyuan Xuebao/Journal of Central-South Institute of Mining and Metallurgy, 1988, 19 (03): : 299 - 306
  • [45] Effect of the disproportionation and recombination stages of the HDDR process on the inducement of anisotropy in Nd-Fe-B magnets
    Sugimoto, S
    Nakamura, H
    Kato, K
    Book, D
    Kagotani, T
    Okada, M
    Homma, M
    JOURNAL OF ALLOYS AND COMPOUNDS, 1999, 293 : 862 - 867
  • [46] Morphology and microstructure of Fe–Cr–W–B alloy powders prepared by argon gas atomization
    Sun L.
    Liu Y.
    Li J.
    Chen K.
    Gao Y.
    Yang G.
    Vacuum, 2022, 200
  • [47] The effect of Pr and Zr substitutions on the disproportionation reaction in Nd-Fe-B-based materials
    McGuiness, PJ
    Podmiljsak, B
    Kobe, S
    IEEE TRANSACTIONS ON MAGNETICS, 2003, 39 (05) : 2956 - 2958
  • [48] Effects of Anisotropy Field and Easy Axis Dispersions on Squareness Ratio for HDDR-Processed Nd-Fe-B Powders
    Akagi, Fumiko
    Shirai, Toshiki
    Kariya, Ryo
    IEEE TRANSACTIONS ON MAGNETICS, 2018, 54 (11)
  • [49] Peculiarities of conventional HDDR process in (Nd,Pr)-Fe-B alloy powders under low hydrogen pressure
    Bulyk, Ihor I.
    Luo, Sangen
    Rehman, Sajjad Ur
    Zhong, Shuwei
    Yang, Munan
    INTERMETALLICS, 2022, 148
  • [50] Anisotropic HDDR Nd-Fe-B magnetic powders prepared directly from strip casting alloy flakes
    Liu, M.
    Han, G. B.
    Gao, R. W.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 488 (01) : 310 - 313
12345