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CALCINED FERRITE AND SINTERED FERRITE MAGNET AND ITS PRODUCTION METHOD
Provided is a ferrite sintered magnet having high Br and H_(cJ) and reduced in a Co use amount compared with conventional SrLaCo magnets or CaLaCo magnets. The sintered ferrite magnet having a composition of metallic elements of Ca, R, A, Fe, and Co represented by the general formula Ca_(1-x-y) R_(x)A_(y) Fe_(2n-z)Co_(z) (where R is at least one rare earth element containing La essentially; A is Sr and/or Ba; x, y, z, and n represent the atomic ratios of Ca, R, A, Fe, and Co; 2n is a molar ratio expressed as 2n=(Fe+Co)/(Ca+R+A); and x, y, z, and n satisfy the conditions of 0.15<=x<=0.35, 0.05<=y<=0.40, (1-x-y)>y, 0<=(2n-z)<11.0).
Ca1-x-yRxAyFe2n-zCoz의 일반식으로 표시되는 Ca, R, A, Fe 및 Co의 금속 원소의 조성을 가지는 페라이트 소결 자석(여기서, R은 La를 필수적으로 포함하는 희토류 원소 중 적어도 1종이며; A는 Sr 및/또는 Ba이고; x, y, z 및 n은 Ca, R, A, Fe 및 Co의 원자비를 나타내며; 2n은 2n=(Fe+Co)/(Ca+R+A)로 표시되는 몰비이고; x, y, z 및 n은 0.15≤x≤0.35, 0.05≤y≤0.40, (1-x-y)>y, 0<11.0의 조건을 만족시킴).
CALCINED FERRITE AND SINTERED FERRITE MAGNET AND ITS PRODUCTION METHOD
Provided is a ferrite sintered magnet having high Br and H_(cJ) and reduced in a Co use amount compared with conventional SrLaCo magnets or CaLaCo magnets. The sintered ferrite magnet having a composition of metallic elements of Ca, R, A, Fe, and Co represented by the general formula Ca_(1-x-y) R_(x)A_(y) Fe_(2n-z)Co_(z) (where R is at least one rare earth element containing La essentially; A is Sr and/or Ba; x, y, z, and n represent the atomic ratios of Ca, R, A, Fe, and Co; 2n is a molar ratio expressed as 2n=(Fe+Co)/(Ca+R+A); and x, y, z, and n satisfy the conditions of 0.15<=x<=0.35, 0.05<=y<=0.40, (1-x-y)>y, 0<=(2n-z)<11.0).
Ca1-x-yRxAyFe2n-zCoz의 일반식으로 표시되는 Ca, R, A, Fe 및 Co의 금속 원소의 조성을 가지는 페라이트 소결 자석(여기서, R은 La를 필수적으로 포함하는 희토류 원소 중 적어도 1종이며; A는 Sr 및/또는 Ba이고; x, y, z 및 n은 Ca, R, A, Fe 및 Co의 원자비를 나타내며; 2n은 2n=(Fe+Co)/(Ca+R+A)로 표시되는 몰비이고; x, y, z 및 n은 0.15≤x≤0.35, 0.05≤y≤0.40, (1-x-y)>y, 0<11.0의 조건을 만족시킴).
CALCINED FERRITE AND SINTERED FERRITE MAGNET AND ITS PRODUCTION METHOD
하소 페라이트, 및 페라이트 소결 자석 및 그 제조 방법
TANIOKU YASUAKI (author) / YOSHIMITSU YUSHI (author) / KOBAYASHI YOSHINORI (author)
2022-03-03
Patent
Electronic Resource
Korean
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