Process for preparing ferromagnetic chromium dioxide

Details Process for preparing ferromagnetic chromium dioxide Process for preparing ferromagnetic chromium dioxide

C - Chemistry, Metallurgy

09

K

31/109

C09K 3/00 (2006.01) C01G 37/02 (2006.01) G11B 5/706 (2006.01) H01F 1/00 (2006.01)

Patent

CA 1049250

ABSTRACT OF THE DISCLOSURE Ferromagnetic chromium dioxide is prepared by ther- mally decomposing, at a temperature of 250-500°C, and a pressure of at least 80 atmospheres a mixture of hydrated trivalent chromium chromate of the formula Cr2(CrO4)3. nH2O, wherein n is 8-12, and antimony or a compound thereof, the amount of antimony in the mixture being between 0.3 and 0.7% by weight based on the weight of anhydrous Cr2(CrO4)3. In another embodiment, other known modifiers for chromium dioxide, such as lanthanum, lithium, strontium, iron or lead, or a compound thereof may be added to the mixture of chromium chromate and antimony. The amount of said other modifiers is between 0.1 and 2% by weight of the ele- ment, based on the weight of anhydrous Cr2(CrO4)3.

226540

Affiliated with

Also associated with

Rating

Process for preparing ferromagnetic chromium dioxide does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing ferromagnetic chromium dioxide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing ferromagnetic chromium dioxide will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1080668