ANGELO, J.D.MOTTA, C.C.BARBOSA, L.P.TAKIISHI, H.COSTA, I.FARIA, R.N.2014-07-152014-07-302014-07-152014-07-302008ANGELO, J.D.; MOTTA, C.C.; BARBOSA, L.P.; TAKIISHI, H.; COSTA, I.; FARIA, R.N. The effect of niobium and boron content on magnetic properties and corrosion resistance of Pr-Fe-Co-B-Nb HD magnets. <b>Materials Science Forum</b>, v. 591-593, p. 96-101, 2008. DOI: <a href="https://dx.doi.org/10.4028/www.scientific.net/MSF.591-593.96">10.4028/www.scientific.net/MSF.591-593.96</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/5007.0255-5476http://repositorio.ipen.br/handle/123456789/5007The hydrogenation decrepitation process was employed to produce sintered magnets using a mixture of two alloys. The effect of niobium and boron content on the magnetic properties of Pr14FebalCo16BxNby-type sintered magnets was studied. Niobium and boron have a significant effect on the magnetic behavior of these permanent magnets. The optimum amount of boron was 6 at% and niobium should be kept below to 0.50 at%. The squareness factor (0.90) has been improved considerably and good overall magnetic properties (Br=1320 mT, iHc=700 kAm-1 and (BH)max=315 kJm-3) have been achieved for the sintered magnets prepared from the Pr14Fe63.85Co16B6Nb0.15 alloy.96-101openAccessmagnetic propertiespermanent magnetspraseodymium alloyshydridesniobium alloysboron alloyspowder metallurgyArtigo de periódico591-59310.4028/www.scientific.net/MSF.591-593.96https://orcid.org/0000-0002-4987-3334