Anisotropic Hot-Deformed MRE-Fe-B Magnets With Zn Powder Addition (MRE = Nd plus Y plus Dy)

TitleAnisotropic Hot-Deformed MRE-Fe-B Magnets With Zn Powder Addition (MRE = Nd plus Y plus Dy)
Publication TypeJournal Article
Year of Publication2012
AuthorsTang W, Xing QF, Dennis KW, Oster NT, Kramer MJ, Anderson IE, McCallum RW
Journal TitleIEEE Transactions on Magnetics
Volume48
Pages3147-3149
Date Published11
Type of ArticleArticle; Proceedings Paper
ISBN Number0018-9464
Accession NumberWOS:000310194400106
KeywordsAnisotropic magnet, hot deformation, magnet, magnetic properties, permanent-magnets, rare earth
Abstract

Anisotropic magnets were fabricated by a vacuum hot deformation (VHD) method from isotropic MRE2(Fe, Co)(14)B ribbons mixed with Zn powder (MRE = Nd + Y = Dy). TEM microstructure shows that the VHD processing results in the formation of aligned platelet-like grains perpendicular to the pressing direction, and thus produces a strong magnetic anisotropy texture parallel to the pressing direction. The addition of Zn is helpful to develop higher magnetic anisotropy and retain better magnetic properties during the VHD processing. An optimized VHD magnet obtained a (BH)(max) of 23.3 MGOe compared to 9.6 MGOe for the isotropic ribbons. The temperature coefficients of M-r and H-c for the VHD sample are -0.09 and -0.48%/degrees C in the temperature range of 27-127 degrees C, respectively.

URL<Go to ISI>://WOS:000310194400106
DOI10.1109/tmag.2012.2205908
Alternate JournalIEEE Trans. Magn.