Heat treatment of rapidly quenched Fe-6.5 wt % Si ribbon

Details Heat treatment of rapidly quenched Fe-6.5 wt % Si ribbon Heat treatment of rapidly quenched Fe-6.5 wt % Si ribbon

1989-05-30

1991-02-05

Sheehan, John P.

Metal treatment

Stock

Magnetic

420117, H01F 1147

Patent

active

049901974

ABSTRACT:
A rapidly quenched Fe-Si Alloy containing 6 to 7 wt % is heat treated to promote and control an order-disorder reaction, thereby improving its ac core loss and exciting power at induction levels about B=1.2 T. The alloy has a substantially <100> texture, a grain size of about 1 to 2 mm, a R2 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.

REFERENCES:
patent: 4265682 (1981-05-01), Tsuya et al.
patent: 4427462 (1984-01-01), Senno et al.

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