Method of making magnetic powders

Details Method of making magnetic powders Method of making magnetic powders

C - Chemistry, Metallurgy

22

C

75/155

C22C 1/10 (2006.01)

Patent

CA 1103069

ABSTRACT OF THE DISCLOSURE A method of making magnetic powders is disclosed which comprises the steps of dispersing iron oxide particles into aqueous solution of cobalt salt, adding alkali to the aque- ous dispersion to such an extent that its alkali concentra- tion becomes higher than 3 mol/? but lower than 12 mol/?, and heating a resultant dispersion so as to modify said iron oxide particles with cobalt, whereby magnetic powders which are superior in magnetic characteristics can be obtained. - 2 -

306504

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