Fe-based amorphous alloy strip

Details Fe-based amorphous alloy strip Fe-based amorphous alloy strip

2006-04-05

2010-06-29

Wyszomierski, George (Department: 1793)

Metal treatment

Stock

Amorphous, i.e., glassy

C148S304000, C420S009000, C420S087000

Reexamination Certificate

active

07744703

ABSTRACT:
The present invention provides a Fe—B—Si system amorphous alloy thin strip excellent in high magnetic flux density, thermal stability, amorphous formability improved workability and low core loss. The present invention further provides a Fe—B—Si system amorphous alloy thin strip which has the reduced cost without using high purity iron resources such as an electrolytic iron as iron resources used in an amorphous alloy thin strip, and also has core loss less than 0.10 W/kg at W13/50in soft magnetic property in alternating-current field. The Fe—B—Si system amorphous alloy thin strip according to the present invention contains an appropriate amounts of N, C, P to improve thermal stability, amorphous formability, workability (brittleness), and core loss without deteriolating magnetic flux density, and contains, in atomic %, B: 5-25%, Si: 1-30%, N: 0.001-0.2%, C: 0.003-10%, P: 0.001-0.2% and the balance being Fe and unavoidable impurities, and optionally contains Co or Ni substituted to less than 15% of the Fe amount, or Cr at less than 5% substituted to the Fe amount. Further, Mn: 0.15-0.5 mass %, S: 0.004-0.05 mass % can be included.

REFERENCES:
patent: 4623408 (1986-11-01), Karamon et al.
patent: 5225006 (1993-07-01), Sawa et al.
patent: 5370749 (1994-12-01), Ames et al.
patent: 2004/0140016 (2004-07-01), Sakamoto et al.
patent: 57-137451 (1982-08-01), None
patent: 59-016947 (1984-01-01), None
patent: 60-1373 (1985-01-01), None
patent: 62-74049 (1987-04-01), None
patent: 62-074050 (1987-04-01), None
patent: 62-077443 (1987-04-01), None
patent: 62-86146 (1987-04-01), None
patent: 03-500668 (1991-02-01), None
patent: 3-68108 (1991-10-01), None
patent: 03-264654 (1991-11-01), None
patent: 08-15193 (1996-01-01), None
patent: 09-095760 (1997-04-01), None
patent: 9-202946 (1997-08-01), None
patent: 2708410 (1998-02-01), None
patent: 10-277710 (1998-10-01), None
patent: 2001-279387 (2001-10-01), None
patent: 2004-066294 (2004-03-01), None
patent: 89/03436 (1989-04-01), None
Japanese Office Action dated Nov. 11, 2008 issued in corresponding Japanese Application No. 2006-085785.
K.V. Rao et al. “Crystallization Processes in Nitrogen-Bearing Fe-V-B-Si Amorphous Alloys: Magnetic, Thermal, and Transport Properties” Journal of Non-Crystalline Solids, vol. 61 & 62 (1984) pp. 853-858.
Japanese Office Action dated Apr. 21, 2009 issued in corresponding Japanese Application No. 2006-085785.
Liebermann “Nitrogen as an Alloying Element in Some Metallic Glasses”, Journal of Materials Science, 1982, vol. 17, No. 4, pp. 1195-1200.

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