Document Type
Patent
Publication Date
9-12-1989
Patent Number
patent number 4865657
Abstract
A rapidly quenched Fe-Si alloy containing 6 to 7 wt % Si is heat treated to promote and control an order-disorder reaction, thereby improving its ac core loss and exciting power at induction levels above B=1.2 T. The alloy has a substantially texture, a grain size of about 1 to 2 mm, a B2 domain size of 100 to 850 nm, a DO3 domain size of about 5 to 25 nm, an ac core loss of about 1.2 to 1.6 W/kg and an exciting power of about 15 to 46 VA/kg, the core loss and exciting power being measured at an induction level of B=1.4 T and a frequency of f=60 Hz.
Application Number
07/183342
Filing Date
1988-04-12
Primary/U.S. Class
148/113
Other/U.S. Class
148/122
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