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    • 46. 发明专利
    • Rare earth magnet powder and rare earth magnet
    • 稀土磁粉和稀土磁铁
    • JP2006233277A
    • 2006-09-07
    • JP2005049919
    • 2005-02-25
    • Hitachi Ltd株式会社日立製作所
    • KOMURO MATAHIROSATSUU YUUICHITANIGAWA SHIGEO
    • B22F1/00B22F1/02H01F1/053H01F1/09
    • PROBLEM TO BE SOLVED: To solve the problem that, regarding a magnet formed by mixing NdFeB powder and a fluorine compound such as NdF 3 , residual magnetic flux density reduces in accordance with the mixing amount of the fluorine compound, and energy product remarkably reduces, and to suppress such reduction of the magnetic properties. SOLUTION: A fluorine compound is applied to the surface of magnetic powder, so as to be formed, further, a diffusion layer is formed on the grain boundary between the fluorine compound and the magnetic powder, and a fluorine concentration difference is made in the fluorine compound. Further, the magnetic powder is composed of NdFeB powder as the main phase. COPYRIGHT: (C)2006,JPO&NCIPI
    • 解决的问题为了解决对于通过混合NdFeB粉末和诸如NdF <3> / 3的氟化合物形成的磁体,残留磁通密度根据 氟化合物和能量乘积显着降低,并且抑制磁性的降低。 解决方案:在氟化合物和磁性粉末之间的晶界上形成氟化合物,形成在氟化合物和磁粉之间的晶界上,形成氟浓度差 在氟化合物中。 此外,磁粉由NdFeB粉末作为主相组成。 版权所有(C)2006,JPO&NCIPI