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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

How Extrinsic Is the Coercivity in NdFeB Bonded Magnets?

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Author(s):
Perigo, E. A. [1, 2] ; Cruz, I. A. [2] ; Antunes, B. [2] ; Braga, A. P. V. [3, 2] ; Landgraf, F. J. G. [3, 2]
Total Authors: 5
Affiliation:
[1] Univ Luxembourg, Lab Phys Adv Mat, L-1511 Luxembourg - Luxembourg
[2] Inst Technol Res, BR-05508901 Sao Paulo - Brazil
[3] Univ Sao Paulo, Polytech Sch, BR-05508010 Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: IEEE Transactions on Magnetics; v. 49, n. 9, p. 5043-5047, SEP 2013.
Web of Science Citations: 3
Abstract

The influence of the densification step, performed by uniaxial pressing at room temperature, on the coercivity mu H-0(c) of NdFeB bonded magnets has been analyzed. The mass density does not play any role on mu H-0(c) of non-cured magnets prepared by the mentioned method. Due to the brittle and intergranular character of the Nd2Fe14B-based phase fracture, the nano-sized grains are not affected or the modification is negligible, which maintains mu H-0(c) unchanged. After curing, the intrinsic coercivity of the magnets is reduced as a function of the compaction pressure increase. (AU)

FAPESP's process: 10/08018-8 - Reprocessing of commercial REFeB (RE = Nd or Pr) sintered magnets for preparation of bonded magnets and semi-hard magnetic compounds using hydrogen
Grantee:Élio Alberto Périgo
Support type: Scholarships in Brazil - Post-Doctorate