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A platform for research: civil engineering, architecture and urbanism
FERRITE CALCINED BODY, SINTERED FERRITE MAGNET, AND METHOD FOR MANUFACTURING SINTERED FERRITE MAGNET
To provide a sintered ferrite magnet having a residual magnetic flux density Br exceeding that of a conventional SrLaCo magnet and a coercive force HcJ equivalent to that of the conventional SrLaCo magnet.SOLUTION: Provided is a ferrite calcined body in which the atomic ratios of metal elements Ca, R, Fe, and Co (R is at least one rare earth element and essentially includes La) are expressed by the general formula CaxR1-xFe2n-yCoy, where x, y, and n (2n is a molar ratio and is expressed as 2n=(Fe+Co)/(Ca+R)) satisfy 0.6≤x≤0.8, 0<11.0.SELECTED DRAWING: None
【課題】 従来のＳｒＬａＣｏ磁石を上回る残留磁束密度Ｂｒと従来のＳｒＬａＣｏ磁石と同等の保磁力ＨｃＪとを有す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、０．６≦ｘ≦０．８、０＜ｙ≦０．２、７．０≦２ｎ－ｙ＜１１．０、を満足するフェライト仮焼体。【選択図】なし
FERRITE CALCINED BODY, SINTERED FERRITE MAGNET, AND METHOD FOR MANUFACTURING SINTERED FERRITE MAGNET
To provide a sintered ferrite magnet having a residual magnetic flux density Br exceeding that of a conventional SrLaCo magnet and a coercive force HcJ equivalent to that of the conventional SrLaCo magnet.SOLUTION: Provided is a ferrite calcined body in which the atomic ratios of metal elements Ca, R, Fe, and Co (R is at least one rare earth element and essentially includes La) are expressed by the general formula CaxR1-xFe2n-yCoy, where x, y, and n (2n is a molar ratio and is expressed as 2n=(Fe+Co)/(Ca+R)) satisfy 0.6≤x≤0.8, 0<11.0.SELECTED DRAWING: None
【課題】 従来のＳｒＬａＣｏ磁石を上回る残留磁束密度Ｂｒと従来のＳｒＬａＣｏ磁石と同等の保磁力ＨｃＪとを有す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、０．６≦ｘ≦０．８、０＜ｙ≦０．２、７．０≦２ｎ－ｙ＜１１．０、を満足するフェライト仮焼体。【選択図】なし
FERRITE CALCINED BODY, SINTERED FERRITE MAGNET, AND METHOD FOR MANUFACTURING SINTERED FERRITE MAGNET
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)
2024-09-20
Patent
Electronic Resource
Japanese
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