Stock material or miscellaneous articles – Composite – Of inorganic material
Patent
1995-05-01
1997-01-07
Sheehan, John
Stock material or miscellaneous articles
Composite
Of inorganic material
148301, 148306, 420 77, 420 83, 420103, 428694BR, 428694BA, G11B 566
Patent
active
055915353
ABSTRACT:
There is provided an accicular ferromagnetic metal powder with which one can produce magnetic media for high-density recording that are improved in storage stability and magnetic characteristics.
The improved ferromagnetic metal powder essentially consists of iron and 50 atm % based on the amount of iron of cobalt and at least one of aluminum and yttrium or any other rare earth element and contains no more than 0.05 wt % of an element of Group Ia of the periodic table (Li, Na, K). The amount of aluminum is in the range of 0.1-30 atm %, the amount of yttrium or any other rare earth element is in the range of and 0.1-10 atm %, each being based on the total quantity of the metal elements present. In either of these cases, the residue of an element of Group IIa of the periodic table (Mg, Ca, Sr, Ba) is preferably 0.1 wt % or less.
REFERENCES:
patent: 1838831 (1931-12-01), Hochheim et al.
patent: 2864734 (1958-12-01), Adams et al.
patent: 4133676 (1979-01-01), Oshimura et al.
patent: 4290799 (1981-09-01), Schroeder et al.
patent: 4447264 (1984-05-01), Suzuki et al.
patent: 4544463 (1985-10-01), Pryor
patent: 4728363 (1988-03-01), Crane et al.
patent: 4929275 (1990-05-01), Bogatin
patent: 4985073 (1991-01-01), Naumann et al.
patent: 5062907 (1991-11-01), Buschow et al.
patent: 5192375 (1993-03-01), Sawa et al.
Aizawa Satoshi
Hisano Seiichi
Matsumoto Kazuyuki
Murata Kenji
Saito Kazuhisa
Dowa Mining Co. Ltd.
Sheehan John
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