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Ferrite pre-sintered body and method for producing ferrite sintered magnet
Provided are: a ferrite pre-sintered body from which a ferrite sintered magnet having high magnet characteristics can be obtained; and a method for producing a ferrite sintered magnet using the ferrite pre-sintered body. A ferrite presintered body according to the present invention comprises: a ferrite phase having a hexagonal M-type magnetoplumbite structure and containing a metal element (R is at least one rare earth element, La is an essential element, and A is Sr and/or Ba) of Ca, R, A, Fe, and Co (R is at least one rare earth element, La is an essential element, and A is Sr and/or Ba); and a spinel-type ferrite phase containing Co, and the ferrite presintered body contains 70 mass% or more but less than 100 mass% of the ferrite phase and more than 0 mass% but 30 mass% or less of the spinel-type ferrite phase.
本发明提供一种能够得到具有高的磁体特性的铁氧体烧结磁体的铁氧体预烧体和使用了该铁氧体预烧体的铁氧体烧结磁体的制造方法。本发明的铁氧体预烧体具有：含有Ca、R、A、Fe和Co的金属元素(R是稀土元素的至少一种，La为必须含有的元素，A是Sr和/或Ba)的具有六方晶的M型磁铁铅矿结构的铁氧体相；和含有Co的尖晶石型铁氧体相，并且，上述铁氧体预烧体含有70质量％以上且小于100质量％的上述铁氧体相、大于0质量％且30质量％以下的上述尖晶石型铁氧体相。
Ferrite pre-sintered body and method for producing ferrite sintered magnet
Provided are: a ferrite pre-sintered body from which a ferrite sintered magnet having high magnet characteristics can be obtained; and a method for producing a ferrite sintered magnet using the ferrite pre-sintered body. A ferrite presintered body according to the present invention comprises: a ferrite phase having a hexagonal M-type magnetoplumbite structure and containing a metal element (R is at least one rare earth element, La is an essential element, and A is Sr and/or Ba) of Ca, R, A, Fe, and Co (R is at least one rare earth element, La is an essential element, and A is Sr and/or Ba); and a spinel-type ferrite phase containing Co, and the ferrite presintered body contains 70 mass% or more but less than 100 mass% of the ferrite phase and more than 0 mass% but 30 mass% or less of the spinel-type ferrite phase.
本发明提供一种能够得到具有高的磁体特性的铁氧体烧结磁体的铁氧体预烧体和使用了该铁氧体预烧体的铁氧体烧结磁体的制造方法。本发明的铁氧体预烧体具有：含有Ca、R、A、Fe和Co的金属元素(R是稀土元素的至少一种，La为必须含有的元素，A是Sr和/或Ba)的具有六方晶的M型磁铁铅矿结构的铁氧体相；和含有Co的尖晶石型铁氧体相，并且，上述铁氧体预烧体含有70质量％以上且小于100质量％的上述铁氧体相、大于0质量％且30质量％以下的上述尖晶石型铁氧体相。
Ferrite pre-sintered body and method for producing ferrite sintered magnet
铁氧体预烧体和铁氧体烧结磁体的制造方法
OYA MAMI (author) / KOBAYASHI YOSHINORI (author) / TANIOKU YASUAKI (author)
2022-09-30
Patent
Electronic Resource
Chinese
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