Magnetic recording medium comprising cobalt or cobalt alloy coat

Details Magnetic recording medium comprising cobalt or cobalt alloy coat Magnetic recording medium comprising cobalt or cobalt alloy coat

1974-12-13

1976-08-31

Satterfield, Walter R.

Compositions

Magnetic

Free metal or alloy containing

75 05AA, 148 3155, 148105, 427128, B22F 300, H01F 104, C22C 104

Patent

active

039779858

ABSTRACT:
A magnetic recording medium is disclosed as comprising powdered magnetic particles upon which there is deposited a ferro-magnetic metal or alloy such as cobalt or a cobalt alloy. Each magnetic particle is a spiculate magnetite and the deposite of cobalt or a cobalt alloy is in the range of 0.5 wt.% to 30 wt.%. The particles are heat treated in either a reducing or inert atmosphere to a sufficient temperature to improve the magnetic characteristics of the particles including their coercive force, Br/.rho. and Bm/.rho.. A layer of the recording medium is disposed on a support layer of polyester to form a magnetic tape.

REFERENCES:
patent: 3026215 (1962-03-01), Fukuda et al.
patent: 3607218 (1971-09-01), Akashi et al.
patent: 3702270 (1972-11-01), Kawasaki et al.
patent: 3720618 (1973-03-01), Toda et al.
patent: 3748119 (1973-07-01), Hwang et al.

Affiliated with

Also associated with

Rating

Magnetic recording medium comprising cobalt or cobalt alloy coat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic recording medium comprising cobalt or cobalt alloy coat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording medium comprising cobalt or cobalt alloy coat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1814285