Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
1978-02-07
1980-03-25
Steiner, Arthur J.
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
148 3157, 148103, H01F 104
Patent
active
041949323
ABSTRACT:
Fe/Cr/Co alloys of this invention which are provided with both a good workability and maximum energy product of 2.0 MGOe or more, consist of 17 to 45% by weight of chromium, 3 to 14.9% by weight of cobalt and the remainder being essentially of iron, which also attribute to the method of producing improved Fe/Cr/Co permanent alloy products usable with good efficiency on an industrial scale and make the best possible use of the advantageous characteristics particular to the component compositions of the alloys. This method contains the aging in a magnetic field and preferably comprises at least the step of aging in a magnetic field the alloy material in a predetermined temperature range and the secondary aging treatment step of cooling continuously and gradually the alloy material through a predetermined temperature range.
REFERENCES:
patent: 3806336 (1974-04-01), Kaneko et al.
patent: 3982972 (1976-09-01), Iwata et al.
patent: 3989556 (1976-11-01), Iwata et al.
patent: 4093477 (1978-06-01), Iwata et al.
Kaneko et al. "Effect of V and V+tTi Additions on the Structure and Properties of Fe-Cr-Co Ductile Magnetic Alloys," IEEE Trans. on Mag., vol. Mag. 12, No. 6 pp. 977-979, 11/76.
Hitachi Metals
Steiner Arthur J.
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