Process of manufacturing ferrite materials with improved magneti

Details Process of manufacturing ferrite materials with improved magneti Process of manufacturing ferrite materials with improved magneti

1973-05-18

1976-04-06

Cooper, Jack

Compositions

Magnetic

Iron-oxygen compound containing

423594, C04B 3530, C04B 3538

Patent

active

039487857

ABSTRACT:
A process for preparing ferromagnetic ferrite powder is disclosed. According to this process, solid ferrite forming metal compounds are calcined and subsequently sintered while the oxygen content of the ambient atmosphere is controlled to maintain the oxygen content of the ferrite substantially stoichiometric throughout the process. As disclosed herein, metal oxides can be used as the ferrite forming metal compounds and the oxygen in the ambient atmosphere can be controlled during calcining and sintering by using a flowing stream of nitrogen gas containing 0 to about 1%, by volume, of oxygen. Ferromagnetic ferrite powders obtained by this process exhibit substantially uniform mircostructures and oxygen contents which are substantially stoichiometric. Examples of ferrite powders which are prepared by the process include manganese zinc ferrite and nickel zinc ferrite.

REFERENCES:
patent: 3027327 (1962-03-01), Blank
patent: 3043777 (1962-07-01), Lessoff et al.
patent: 3189550 (1965-06-01), Malinofsky
patent: 3252913 (1966-05-01), Van Gils et al.
patent: 3472780 (1969-10-01), Stuijts
patent: 3483126 (1969-12-01), Sara et al.
patent: 3542685 (1970-11-01), Iwase et al.
patent: 3565806 (1971-02-01), Ross
patent: 3574114 (1971-04-01), Monforte
patent: 3645898 (1972-02-01), Klerk et al.
patent: 3778374 (1973-12-01), Shichijo et al.

Affiliated with

Also associated with

Rating

Process of manufacturing ferrite materials with improved magneti 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 of manufacturing ferrite materials with improved magneti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of manufacturing ferrite materials with improved magneti will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1575084