Ferromagnetic powder for magnetic recording medium and method fo

Details Ferromagnetic powder for magnetic recording medium and method fo Ferromagnetic powder for magnetic recording medium and method fo

1974-08-15

1976-06-29

Satterfield, Walter R.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

75 5AA, 148108, H01F 102

Patent

active

039665100

ABSTRACT:
A ferromagnetic powder which contains at least Fe--B or Fe--Co--B with the surface of the powder having thereon a layer of Cr or a layer mainly consisting of Cr and a method of preparing the ferromagnetic powder comprising reducing a metal salt capable of forming a ferromagnetic powder containing at least Fe or Fe-Co in an aqueous solution thereof with one or more borohydride compounds or derivatives thereof and after the reduction is initiated adding an aqueous solution containing Cr ion or an anion containing Cr.

REFERENCES:
patent: 3206338 (1965-09-01), Miller et al.
patent: 3567525 (1971-03-01), Graham et al.
patent: 3702270 (1972-11-01), Kawasaki et al.
patent: 3756866 (1973-09-01), Parker et al.
patent: 3837912 (1974-09-01), Roden
patent: 3865627 (1975-02-01), Roden et al.

Affiliated with

Also associated with

Rating

Ferromagnetic powder for magnetic recording medium and method fo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ferromagnetic powder for magnetic recording medium and method fo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ferromagnetic powder for magnetic recording medium and method fo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1275285