Process for manufacturing a magnetic component made of an iron-b

Details Process for manufacturing a magnetic component made of an iron-b Process for manufacturing a magnetic component made of an iron-b

1997-12-11

1999-06-15

Sheehan, John

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148108, H01F 1147

Patent

active

059118407

ABSTRACT:
Process for manufacturing a magnetic component made of an iron-based soft magnetic alloy having a nanocrystalline structure, the chemical composition of which is, in at. %, Fe.gtoreq.60%, 0.1%.ltoreq.Cu.ltoreq.3%, 0%.ltoreq.B.ltoreq.25%, 0%.ltoreq.Si.ltoreq.30%, and at least one element selected from niobium, tungsten, tantalum, zirconium, hafnium, titanium and molybdenum with contents of between 0.1% and 30%, the balance being impurities resulting from the smelting, the composition furthermore satisfying the relationship 5%.ltoreq.Si+B.ltoreq.30%, according to which an amorphous ribbon is manufactured from the magnetic alloy, a blank for a magnetic component is manufactured from the ribbon and the magnetic component is subjected to a crystallization heat treatment comprising at least one annealing step at a temperature of between 500.degree. C. and 600.degree. C. for a temperature hold time of between 0.1 and 10 hours so as to cause nanocrystals to form; before the crystallization heat treatment, a relaxation heat treatment is carried out at a temperature below the temperature for the onset of recrystallization of the amorphous alloy.

REFERENCES:
patent: 4262233 (1981-04-01), Becker et al.
patent: 5252144 (1993-10-01), Martis
patent: 5340413 (1994-08-01), Martis
patent: 5611871 (1997-03-01), Yoshizawa et al.
patent: 5725686 (1998-03-01), Yoshizawa et al.
IEEE Transactions on Magnetics, vol. 29, No. 6, Nov. 1, 1993, pp. 2670-2672, Heczko et al.: "Magnetic Properties of Compacted Alloy Fe.sub.73..sub.5 CU.sub.1 NB.sub.3 Si1.sub.3.5 B.sub.9 In Amorphous and Nanocrystalline State".
Patent Abstracts of Japan, vol. 009, No. 178 (E-330), Jul. 23, 1985 & JP 60 047 407 A (Matsushita Denko KK).

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