Patent ID: 6296948
Filing Date: 2001-10-02
Classification: B22D,H01F,Y10T

Abstract:
A wide amorphous metal alloy strip of relatively high saturation and low core loss having a width of at least about one inch and a thickness less than about 0.003 inch, said alloy consisting essentially of 77 to less than 80 atomic percent iron, about 13 to 16 atomic percent boron and 5 to 10 atomic percent silicon with no more than incidental impurities and having improved castability, said strip having magnetic properties characterized by a 60 cycles per second core loss of less than 0.100 watts per pound at 12.6 kilogauss, saturation magnetization of at least 15 kilogauss, and a coercive force of less than about 0.04 oersteds, said strip being at least singularly ductile and exhibiting good thermal stability based on core loss.