Magnetic properties of Fe-6.4wt% Si ribbons
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1991
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IEEE Transactions on Magnetics
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Thin Fe6.4wt.%si ribbons were produced by melt
spinning. High temperature recrystallizations, performed at
1025ºC in a hydrogen atmosphere, were found to produce the
lowest Hc values (19 A/m. Further agings were carried out at
50ºC intervals in the range 400-7°C to optimize the magnetic
properties. For all ribbons we measured Hc (60 Hz and DC), the
maximum permeability fim,, the saturation magnetostriction
A, and the effective anisotropy constant Keff In general, the
agings did little to improve the magnetic properties, and those
around 600-C resulted in their deterioration. Extensive TEM
investigations of the ribbons indicate that the dendritic
structure of the as-cast material disappears after
recrystallization, leading to a more uniform distribution of Si as
well as a more homogeneous ordering. The 600ºC aging results
in a marked anisotropy in the B2 antiphase boundaries and the
growth of oxide particles, which lead to a deterioration of the
magnetic properties.
Como referenciar
ALTOE, M.V.P.; LANCAROTTE, M.S.; COHEN, R.; MISSELL, F.P.; MONTEIRO, W.A.; DEGAUQUE, J.; FAGOT, M. Magnetic properties of Fe-6.4wt% Si ribbons. IEEE Transactions on Magnetics, v. 27, n. 6, p. 5325-5327, 1991. DOI: 10.1109/20.278827. Disponível em: http://repositorio.ipen.br/handle/123456789/26724. Acesso em: 27 Mar 2025.
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