A comparative study between low and high-energy milling processes for the production of HD PrFeCoBNb sintered materials
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Materials Science Forum
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Roller-ball milling (RBM) or planetary ball milling (PBM) have been used together with the hydrogen decrepitation (HD) process to produce sintered permanent magnets based on a mixture of Pr16Fe76B8 and Pr14.00Fe63.90Co16.00B6.00Nb0.10 magnetic alloys. Five distinct compositions have been studied comparing low- and high-energy milling. Magnets with a particular composition and prepared using these two routes exhibited similar magnetic properties. Modifications have been carried out in the procedure of the HD stage for PBM in order to guarantee a high degree of crystallographic alignment. Pr15.00Fe69.95Co8.00B7.00Nb0.05 magnets showed the best maximum energy product for both processing routes (~ 247 kJm-3). A significant reduction in the milling time (93%) has been achieved with high-energy processing, the greatest advantage over the low-energy route.
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PERIGO, E.A.; SOARES, E.P.; TAKIISHI, H.; MOTTA, C.C.; FARIA, R.N. A comparative study between low and high-energy milling processes for the production of HD PrFeCoBNb sintered materials. Materials Science Forum, v. 591-593, p. 114-119, 2008. DOI: 10.4028/www.scientific.net/MSF.591-593.114. Disponível em: http://repositorio.ipen.br/handle/123456789/4931. Acesso em: 24 Mar 2026.
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.