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Ferrite preparation method and prepared ferrite thereby
The invention discloses a ferrite preparation method and the prepared ferrite thereby. The method comprises the following steps: preparing a ferrite pre-sintering material and performing wet crushing treatment, thereby obtaining ferrite pre-sintering material slurry; drying the ferrite pre-sintering material slurry; performing vibro-milling treatment on the dried ferrite pre-sintering material powder for 20-40 minutes by adopting a vibration mill; performing high speed dispersion treatment on the vibro-milled powder; uniformly mixing the ferrite pre-sintering material powder subjected to high speed dispersion with an adhesive, performing dry pressing in a magnetic field, thereby obtaining the formed ferrite; sintering the formed ferrite, thereby obtaining the high-performance dry pressed and sintered permanent magnetic ferrite. According to the method disclosed by the invention, the density of the formed ferrite can be improved, adhesion among the ferrite particles can be reduced, and the dispersity of the ferrite particles is improved, so that the arrangement degree of the ferrite particles along the easy magnetization direction is improved, and the orientation degree of the particles is greatly improved. Therefore, the magnetic performance of the dry pressed and sintered permanent magnetic ferrite can be greatly improved.
Ferrite preparation method and prepared ferrite thereby
The invention discloses a ferrite preparation method and the prepared ferrite thereby. The method comprises the following steps: preparing a ferrite pre-sintering material and performing wet crushing treatment, thereby obtaining ferrite pre-sintering material slurry; drying the ferrite pre-sintering material slurry; performing vibro-milling treatment on the dried ferrite pre-sintering material powder for 20-40 minutes by adopting a vibration mill; performing high speed dispersion treatment on the vibro-milled powder; uniformly mixing the ferrite pre-sintering material powder subjected to high speed dispersion with an adhesive, performing dry pressing in a magnetic field, thereby obtaining the formed ferrite; sintering the formed ferrite, thereby obtaining the high-performance dry pressed and sintered permanent magnetic ferrite. According to the method disclosed by the invention, the density of the formed ferrite can be improved, adhesion among the ferrite particles can be reduced, and the dispersity of the ferrite particles is improved, so that the arrangement degree of the ferrite particles along the easy magnetization direction is improved, and the orientation degree of the particles is greatly improved. Therefore, the magnetic performance of the dry pressed and sintered permanent magnetic ferrite can be greatly improved.
Ferrite preparation method and prepared ferrite thereby
LIU HUI (author) / LI BINGSHAN (author) / TENG YANGMIN (author) / XU WENSHENG (author) / WEI HANZHONG (author) / WANG YINGQUAN (author) / QUAN XIAOKANG (author)
2015-04-08
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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