Nano-crystalline soft magnetic alloy ribbon with insulation coat

Details Nano-crystalline soft magnetic alloy ribbon with insulation coat Nano-crystalline soft magnetic alloy ribbon with insulation coat

1994-05-20

1996-01-23

Loney, Donald J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428143, 428192, 428208, 428209, 428210, 428212, 428213, 428332, 428693, 428697, 428900, B32B 300

Patent

active

054864046

ABSTRACT:
A nano-crystalline soft magnetic alloy ribbon having a structure being occupied by nano-crystalline particles having an average particle size of 50 nm or less at least 50% of the alloy structure. A ceramic insulation coating is formed on its surface so that the coating becomes thicker at the both ends of the ribbon than at the center in the transverse direction of the ribbon and the thickness dx at the coating ends and the average thickness da of the coating determined by a mass measurement method are in the relations of 1.2 da.ltoreq.dx.ltoreq.5 da and dx.ltoreq.10 .mu.m. With a magnetic core using such a nano-crystalline soft magnetic alloy ribbon, magnetic components including saturable reactor, transformer, saturable transformer, acceleration cavity and surge absorbing elements such as surge block core in neutral beam injector can realize a higher performance. The invention also results in a higher reliability for the devices using such magnetic components.

REFERENCES:
patent: 4833019 (1989-05-01), Sunarnasarn
patent: 4837082 (1989-06-01), Harrell et al.
patent: 4839244 (1989-06-01), Tsutamoto
Journal of Applied Physics, vol. 67, No. 9, May 1, 1990, New York, US, pp. 5556-5561, "Applications of Amorphous Magnetic Materials at Very-High Magnetization Rates (Invited)".

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