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Preparation method for non-rare-earth high-remanent-magnetism permanent-magnetism ferrite
The invention relates to a production method for a permanent-magnetism ferrite and the permanent-magnetism ferrite, and especially relates to a preparation method for a non-rare-earth high-remanent-magnetism permanent-magnetism ferrite. The disclosed preparation method for the non-rare-earth high-remanent-magnetism permanent-magnetism ferrite comprises: operation of wet grinding and material mixing, operation of first pre-sintering, operation of coarse crushing, operation of fine grinding, operation of wet-pressing magnetic field forming, operation of secondary sintering, and operation of polishing processing. According to the preparation, under the circumstance of not adding rare earth elements, through one-time molar ratio proportioning and addition of a first additive and a second additive, the permanent-magnetism ferrite, which has the high residual magnetic flux density Br of 420 mT or more, the Hcb of 265 KA/m or more and Hcj of 270 KA/m or more, is prepared.
Preparation method for non-rare-earth high-remanent-magnetism permanent-magnetism ferrite
The invention relates to a production method for a permanent-magnetism ferrite and the permanent-magnetism ferrite, and especially relates to a preparation method for a non-rare-earth high-remanent-magnetism permanent-magnetism ferrite. The disclosed preparation method for the non-rare-earth high-remanent-magnetism permanent-magnetism ferrite comprises: operation of wet grinding and material mixing, operation of first pre-sintering, operation of coarse crushing, operation of fine grinding, operation of wet-pressing magnetic field forming, operation of secondary sintering, and operation of polishing processing. According to the preparation, under the circumstance of not adding rare earth elements, through one-time molar ratio proportioning and addition of a first additive and a second additive, the permanent-magnetism ferrite, which has the high residual magnetic flux density Br of 420 mT or more, the Hcb of 265 KA/m or more and Hcj of 270 KA/m or more, is prepared.
Preparation method for non-rare-earth high-remanent-magnetism permanent-magnetism ferrite
QIU SHIXING (author) / LIU XIANSONG (author) / KUANG XUEDONG (author) / YUAN XIAOZHEN (author) / WU YONGLU (author) / SUN MIAO (author) / HUANG FENG (author) / DING WENLAN (author)
2015-05-13
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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