Grain-oriented silicon steel sheet having a low iron loss free f

Details Grain-oriented silicon steel sheet having a low iron loss free f Grain-oriented silicon steel sheet having a low iron loss free f

1984-10-22

1987-04-07

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

307113, H01F 104

Patent

active

046558543

ABSTRACT:
A grain-oriented silicon steel sheet having a low iron loss free from deterioration due to the stress-relief annealing, can be obtained by forming on its surface a forsterite film locally having regions, which have a thickness different from that of the remaining regions in the film, or locally having filmless regions which do not coat the steel sheet surface.

REFERENCES:
patent: 2410220 (1946-10-01), Langworthy
patent: 2985855 (1961-05-01), Stone
patent: 3544396 (1970-12-01), Taylor
patent: 3990923 (1976-11-01), Takashina et al.
Handbook of Chemistry and Physics, 54th Ed., 1973, p. F-108.
Patent Abstracts of Japan vol. 5, No. 180, (C-79), [852] Nov. 19th, 1981, and Japan A-56, 105, 421.
Proceedings of the Symposium on Magnetism and Magnetic Materials, Dec. 9th-12th, 1975, Philadelphia, pp. 574-575, Proc. 21, American Institute of Physics, NY, U.S.A.

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