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FERRITE CALCINATION PRODUCT, FERRITE SINTERED MAGNET, AND FERRITE SINTERED MAGNET MANUFACTURING METHOD
To provide: a ferrite sintered magnet having a higher residual magnetic flux density Br and a higher coercive force HcJ than conventional CaLaCo magnets; or a ferrite sintered magnet which has a residual flux density Br and a coercive force HcJ that are higher than or comparable to those of conventional CaLaCo magnets, and which is able to reduce the amount of Co used compared to conventional CaLaCo magnets.SOLUTION: A ferrite calcination product has the general formula: CaxR1-xFe2n-yCoy, which represents the atomic ratio of the metal elements Ca, R, Fe and Co (where R is at least one rare earth element including La as an essential element), where x, y and n (where 2n is the molar ratio and represented by 2n=(Fe+Co)/(Ca+R)) satisfy 0.5<11.0.SELECTED DRAWING: None
【課題】 従来のＣａＬａＣｏ磁石を上回る高い残留磁束密度Ｂｒ及び高い保磁力ＨｃＪを有するフェライト焼結磁石、または、従来のＣａＬａＣｏ磁石と同等以上の高い残留磁束密度Ｂｒ及び高い保磁力ＨｃＪを有するとともに、従来のＣａＬａＣｏ磁石よりもＣｏ使用量を削減することができるフェライト焼結磁石の提供。【解決手段】 Ｃａ、Ｒ、Ｆｅ及びＣｏの金属元素（ただし、Ｒは希土類元素の少なくとも１種であってＬａを必須に含む元素）の原子比を示す一般式：ＣａｘＲ１－ｘＦｅ２ｎ－ｙＣｏｙにおいて、前記ｘ及びｙ、並びにｎ（ただし、２ｎはモル比であって、２ｎ＝（Ｆｅ＋Ｃｏ）／（Ｃａ＋Ｒ）で表される）が、０．５＜ｘ＜０．６、０．２＜ｙ＜０．３５、７．５≦２ｎ－ｙ＜１１．０、を満足するフェライト仮焼体。【選択図】なし
FERRITE CALCINATION PRODUCT, FERRITE SINTERED MAGNET, AND FERRITE SINTERED MAGNET MANUFACTURING METHOD
To provide: a ferrite sintered magnet having a higher residual magnetic flux density Br and a higher coercive force HcJ than conventional CaLaCo magnets; or a ferrite sintered magnet which has a residual flux density Br and a coercive force HcJ that are higher than or comparable to those of conventional CaLaCo magnets, and which is able to reduce the amount of Co used compared to conventional CaLaCo magnets.SOLUTION: A ferrite calcination product has the general formula: CaxR1-xFe2n-yCoy, which represents the atomic ratio of the metal elements Ca, R, Fe and Co (where R is at least one rare earth element including La as an essential element), where x, y and n (where 2n is the molar ratio and represented by 2n=(Fe+Co)/(Ca+R)) satisfy 0.5<11.0.SELECTED DRAWING: None
【課題】 従来のＣａＬａＣｏ磁石を上回る高い残留磁束密度Ｂｒ及び高い保磁力ＨｃＪを有するフェライト焼結磁石、または、従来のＣａＬａＣｏ磁石と同等以上の高い残留磁束密度Ｂｒ及び高い保磁力ＨｃＪを有するとともに、従来のＣａＬａＣｏ磁石よりもＣｏ使用量を削減することができるフェライト焼結磁石の提供。【解決手段】 Ｃａ、Ｒ、Ｆｅ及びＣｏの金属元素（ただし、Ｒは希土類元素の少なくとも１種であってＬａを必須に含む元素）の原子比を示す一般式：ＣａｘＲ１－ｘＦｅ２ｎ－ｙＣｏｙにおいて、前記ｘ及びｙ、並びにｎ（ただし、２ｎはモル比であって、２ｎ＝（Ｆｅ＋Ｃｏ）／（Ｃａ＋Ｒ）で表される）が、０．５＜ｘ＜０．６、０．２＜ｙ＜０．３５、７．５≦２ｎ－ｙ＜１１．０、を満足するフェライト仮焼体。【選択図】なし
FERRITE CALCINATION PRODUCT, FERRITE SINTERED MAGNET, AND FERRITE SINTERED MAGNET MANUFACTURING METHOD
フェライト仮焼体、フェライト焼結磁石及びフェライト焼結磁石の製造方法
KOBAYASHI YOSHINORI (author)
2024-09-09
Patent
Electronic Resource
Japanese
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