Manufacture of acicular cobalt-containing magnetic iron oxide

Coating processes – Magnetic base or coating – Magnetic coating

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

252 6256, 427127, C01G 4906

Patent

active

042961491

ABSTRACT:
A process for the manufacture of acicular magnetic iron oxide consisting of a core of gamma-iron(III) oxide and a ferrite shell which contains, based on the total amount of magnetic material, from 0.2 to 12 percent by weight of cobalt(II) ions and from 0.1 to 15 percent by weight of iron(II) ions, wherein a solution containing cobalt(II) hydroxide and iron(II) hydroxide is applied to acicular gamma-iron(III) oxide particles and the latter are heated at 100.degree.-220.degree. C.

REFERENCES:
patent: 3081264 (1963-03-01), Nobuoka et al.
patent: 3573980 (1971-04-01), Haller et al.
patent: 4188302 (1980-02-01), Becker et al.
Kishimoto et al. "J. Appl. Phys." 50(1), 1979 pp. 450-452.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Manufacture of acicular cobalt-containing magnetic iron oxide does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Manufacture of acicular cobalt-containing magnetic iron oxide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manufacture of acicular cobalt-containing magnetic iron oxide will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1491609

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.