The effect of the HDDR process on the production of Pr-Fe-Co-B-Nb sintered magnets
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2008
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CONGRESSO BRASILEIRO DE ENGENHARIA E CIENCIA DOS MATERIAIS, 18.
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Sintered magnets have been produced with powder obtained with the HDDR
process. This new processing procedure for the production of the sintered magnets has
been adopted in an attempt to reduce the milling time. Annealed ingot alloys based on
the compositions Pr14Fe75.9CoxB6Nb0.1 (x= 0; 4; 8; 10; 12; 16) have been employed in
this investigation. A high rare earth content copper-containing alloy, Pr20.5FebalB5Cu2.0,
was used as a sintering aid. A mixture of the HDDR powder obtained from these alloys
was used to prepare sintered magnets. Standard hydrogen decrepitation (HD) magnets
have also been included in this work for a comparison. A remanence of 1173 mT was
achieved with the alloy Pr14Fe67.9Co16B6Nb0.1 processed using the HDDR process and a
milling time of only 5 h. The microstructures of the magnets have been investigated by
scanning electron microscopy and energy dispersive X-ray analysis.
Como referenciar
FERREIRA, E.A.; CASINI, J.C.S.; PERIGO, E.A.; FARIA, R.N.; TAKIISHI, H. The effect of the HDDR process on the production of Pr-Fe-Co-B-Nb sintered magnets. In: CONGRESSO BRASILEIRO DE ENGENHARIA E CIENCIA DOS MATERIAIS, 18., 24-28 de novembro, 2008, Porto de Galinhas, PE. Anais... p. 6644-6655. Disponível em: http://repositorio.ipen.br/handle/123456789/15864. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.