Influence of reduced graphene oxide on the fabrication to neodymium-iron-boron magnets by mechanical milling
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2023
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BRAZIL MRS MEETING, 21st
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The aim of this work was to prepare sintered Nd-Fe-B permanent magnets, following the
traditional powder metallurgy route, using reduced graphene oxide (rGO) in the mechanical
milling process. Also, it was to study the effect of rGO addition on the magnetic properties
of the as-prepared materials. rGO acts as a lubricant and effective milling medium,
preventing agglomeration, welding of the particles, and oxidation of the material. The
structure and morphology of the composite powders were characterized by X-ray diffraction,
Raman spectroscopy, and transmission electron microscopy. The magnetic properties of
sintered magnets were characterized using a permeameter. The highest values of
remanence (Br) and intrinsic coercivity (iHc) values were obtained for the sintered magnet
using 0.02 wt% rGO addition, Br = 1.1 T, and iHc = 764.0 kAm-1.
Como referenciar
SILVA FILHO, JORGE C.; SILVA, SUELANNY C. da; TAKIISHI, HIDETOSHI; JANASI, SUZILENE R.; MARTINEZ, L.G.; REY, JOSE F.Q.; ESCOTE, MARCIA T. Influence of reduced graphene oxide on the fabrication to neodymium-iron-boron magnets by mechanical milling. In: BRAZIL MRS MEETING, 21st, October 1-5, 2023, Maceió, AL. Abstract... São Carlos, SP: Aptor Software, 2023. p. 1131-1131. Disponível em: http://repositorio.ipen.br/handle/123456789/34565. Acesso em: 20 Mar 2026.
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