A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CALCINED FERRITE AND SINTERED FERRITE MAGNET AND ITS PRODUCTION METHOD
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).
A sintered ferrite magnet having a composition of metal elements of Ca, R, A, Fe and Co, which is represented by the general formula of Ca1−x−yRxAyFe2n−zCoz, wherein R is at least one of rare earth elements indispensably including La; A is Sr and/or Ba; x, y, z and n represent the atomic ratios of Ca, R, A, Fe and Co; 2n represents a molar ratio expressed by 2n=(Fe+Co)/(Ca+R+A); and x, y, z and n meet the conditions of 0.15≤x≤0.35, 0.05≤y≤0.40, (1−x−y)>y, 0<11.0.
CALCINED FERRITE AND SINTERED FERRITE MAGNET AND ITS PRODUCTION METHOD
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).
A sintered ferrite magnet having a composition of metal elements of Ca, R, A, Fe and Co, which is represented by the general formula of Ca1−x−yRxAyFe2n−zCoz, wherein R is at least one of rare earth elements indispensably including La; A is Sr and/or Ba; x, y, z and n represent the atomic ratios of Ca, R, A, Fe and Co; 2n represents a molar ratio expressed by 2n=(Fe+Co)/(Ca+R+A); and x, y, z and n meet the conditions of 0.15≤x≤0.35, 0.05≤y≤0.40, (1−x−y)>y, 0<11.0.
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