Grain-oriented electrical steel sheet having a low watt loss

Details Grain-oriented electrical steel sheet having a low watt loss Grain-oriented electrical steel sheet having a low watt loss

1990-01-22

1990-10-02

Sheehan, John P.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having magnetic properties, or preformed fiber orientation...

148307, 148308, 420117, H01F 116

Patent

active

049606522

ABSTRACT:
A grain-oriented electromagnetic steel sheet has an ultra low watt loss and heat resistant subdivided magnetic domains. The electromagnetic steel sheet has spaced apart regions of plastic strain and an insulating coating disposed thereon. Intruders are thermally intruded into the spaced apart regions of plastic strain causing the subdivided magnetic domains to be heat resistant and maintaining the subdivided magnetic domains after stress relief annealing. Preferred intruders include Sb and Sb containing materials.

REFERENCES:
patent: 3990923 (1976-11-01), Takashina et al.
patent: 4203784 (1980-05-01), Kuroki et al.
patent: 4363677 (1982-12-01), Ichiyama et al.
patent: 4548656 (1985-10-01), Kimoto et al.
patent: 4554029 (1985-11-01), Schoen et al.

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