An investigation on the corrosion behaviour of Nd-Fe-B magnets in a chloride solution
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2003
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INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 4th
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Resumo
In this study, the corrosion behaviour of a sintered commercial Nd-Fe-B magnet has been
investigated in naturally aerated and deaerated 3.5 (m/v)% sodium chloride solutions. Magnetized
specimens were used in this investigation. The corrosion behaviour of the specimens was monitored an
increasing test times by means of electrochemical impedance spectroscopy (EIS). Potentiodynamic
polarization curves and surface observation by scanning electron microscopy (SEM), were also curied
out after 30 days of immersion in the test solutions. Experimental results indicated that the corrosion
resistance was affected by aeration of the solution. The corrosive attack penetrates deeply into the
specimens and, consequently, the magnetic properties decreased with immersion time. The magnetic
properties most influenced by corrosion were the remanence (Br) and the maximum energy product
(BHmax), both presenting a reduction corresponding to 6%, after 30 days of immersion.
Como referenciar
COSTA, I.; OLIVEIRA, M.C.L.; MELO, H.G.; FARIA JUNIOR, R.N. An investigation on the corrosion behaviour of Nd-Fe-B magnets in a chloride solution. In: INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 4th, Nov. 19-21, 2003, Guaruja, SP. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/16444. Acesso em: 19 Feb 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.