Patent ID: 6559570
Filing Date: 2003-05-06
Classification: H01F,H02K

Abstract:
An electric motor having at least one bulk amorphous metal magnetic component comprising a plurality of substantially similarly shaped layers of amorphous metal strips laminated together by impregnating the component with an epoxy resin and curing to form a polyhedrally shaped part, each of said amorphous metal strips having a composition defined essentially by the formula: M70-85 Y5-20 Z0-20, subscripts in atom percent, where â€œMâ€  is at least one of Fe, Ni and Co, â€œYâ€  is at least one of B, C and P, and â€œZâ€  is at least one of Si, Al and Ge; with the provisos that (i) up to 10 atom percent of component â€œMâ€  can be replaced with at least one of the metallic species Ti, V, Cr, Mn, Cu, Zr, Nb, Mo, Ta and W, and (ii) up to 10 atom percent of components (Y+Z) can be replaced by at least one of the non-metallic species In, Sn, Sb and Pb, and wherein said bulk amorphous metal magnetic component a core-loss of less than or approximately equal to 1 watt-perkilogram of amorphous metal material when operated at a frequency of approximately 60 Hz and a flux density of approximately 1.4T.