Patent ID: 6471789
Filing Date: 2002-10-29
Classification: B22D,H01F,Y10T

Abstract:
A metal alloy strip, the alloy of the strip consisting essentially of a composition having the formula FeaBbSic where â€œaâ€ , â€œbâ€ , and â€œcâ€  are atomic percentages ranging from about 79 to less than 80, greater then 10 up to 16, and 5 to 10, respectively, with the sum of â€œaâ€ , â€œbâ€ , and â€œcâ€  being equal to 100, and â€œbâ€  being greater than â€œcâ€ , the alloy strip having a core loss of less than about 0.22 Wkg (0.10 W/lb) as measured at 60 Hz and an induction value within 1.0-1.5 Tesla, and the alloy having effective amounts of boron and silicon such that the strip is at least singularly ductile and is at least 75% amorphous.