Sm_2(Fe_(1-x)Cr_x)_(17)N_(～2.7)永磁材料的结构与磁性能

金属学报, 1994, 30(14): 72-76.

Sm_2(Fe_(1-x)Cr_x)_(17)N_(～2.7)永磁材料的结构与磁性能

北京科技大学

北京矿冶研究总院

关键词：ＳｍＦｅＮ永磁 , nitride magnet , intrinsic magnetic property

STRUCTURE AND MAGNETIC PROPERTIES OF Sm_2(Fe_(1-x)Cr_x)17N_(～2.7) MAGNETS

ZHOU Shouzeng , YANG Jun , ZHANG Maocai(University of Science and Technologl. Beijing) , LIN Yi , YIN Youxiang , LIN Guobiao(Beijing General institute of Mining and Metallurgy)(Manuscript received 19 May

Keywords： :SmFeN magnet , 氮化物磁体 , 内禀磁特性

研究了Ｃｒ部分取代Ｆｅ对Ｓｍ_２（Ｆｅ_（１－ｘ）Ｃｒ_ｘ）_１７Ｎ_（~２．７）磁粉磁特性的影响．添加少量Ｃｒ（ｘ＝０－０．１），该化合物的结构不变化。随Ｃｒ含量的增加，它的Ｃｕｒｉｅ温度、各向异性场、饱和磁化强度、平均Ｆｅ原子磁矩和平均超精细场均有所降低．材料的单相性显著改善，矫顽力提高．Ｓｍ_２（Ｆｅ_（０．９５）Ｃｒ_（０．０５））_１７Ｎ_（~２．７）磁粉的矫顽力_ｉＨ_ｃ达到１５９２ｋＡ／ｍ．

Effect of Cr in substitution for a part of Fe on structure and magnetic properties of Sm_2(Fe_(1-x)Cr_x)_(17)N_(~2.7) alloys powder has been investigated.The structure of the alloys remains the same with an addition of Cr,saying x=0-0.1.With the increase of Cr content,their Curie temperature,anisotropic field.saturation magnetization,average Fe atom moment and average hyperfine field decrease slightly.But their homogeneity may be obviously improved and coercivity increased even up to 1592 kA/m for Sm_2(Fe_0.95Cr_0.05)_17N_(~2.7) powder.

参考文献

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