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AssigneeATI Properties, Inc.
InventorsS. Leslie Ames, Vilakkudi G. Veeraraghavan, Stephen D. Washko
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An amorphous metal alloy strip is disclosed having a width greater than about one inch and a thickness less than about 0.003 inch, this alloy consists essentially of 77 to 80 atomic percent iron, 12 to 16 atomic percent boron and 5 to 10 atomic percent silicon with incidental impurities. The strip has a 60 cycle per second core loss of less than about 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. Such alloy is further characterized by increased castability and the strip produced therefrom exhibits at least singular ductility. A method of producing such optimum strip is also disclosed.
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.
A wide amorphous metal alloy strip of relatively high saturation and low core loss having a width greater than about one inch and a thickness not greater than about 0.002 inch, said alloy having improved castability and consisting essentially of:
An amorphous metal alloy strip consisting essentially of 77 to less than 80 atomic percent iron, 12 to 16 atomic percent boron, and 5 to 10 atomic percent silicon, said amorphous metal alloy strip having a 60 cycles per second core loss of less than 0.100 watts per pound and being at least 75% amorphous.
Dependencies are inferred from the claim text.