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FERRITE CALCINED BODY MANUFACTURING METHOD OF FERRITE SINTERED MAGNET
An objective of the present invention is to provide a ferrite sintered magnet capable of having a magnetic property satisfying high Br, high HcJ and high Hk/HcJ all, while making the consumption of Co lower than an existing CaLaCo magnet. To achieve the objective, in regard to a general expression indicating an atom ratio of metallic elements of Ca, R, Sr, Fe and Co (here, R is at least one among rare-earth elements and an element necessarily including La): Ca1-x-yRxAyFe2n-zCoz, provided is a ferrite plasticized body, wherein x, y and z and n (here, 2n is a molar ratio, and expressed as 2n=(Fe＋Co)/(Ca＋R＋Sr)) satisfy 0.4<=x＜0.5, 0＜y<=0.2, 0.18＜z＜0.3, 1.6<=x/z<=2.25 and 8.5<=2n-z<=10.
[과제] 높은 Br, 높은 HcJ 및 높은 Hk/HcJ 모두를 만족하는 자석 특성을 가짐과 함께, 종래 CaLaCo 자석보다 Co의 사용량을 삭감한 페라이트 소결 자석의 제공. [해결수단] Ca, R, Sr, Fe 및 Co의 금속 원소(단, R은 희토류 원소 중 적어도 1종이며 La를 필수로 포함하는 원소)의 원자비를 나타내는 일반식: Ca1-x-yRxAy Fe2n-zCoz에 있어서, 상기 x, y 및 z, 그리고 n(단, 2n은 몰비이며, 2n=(Fe＋Co)/(Ca＋R＋Sr)로 표현된다)이, 0.4≤x＜0.5, 0＜y≤0.2, 0.18＜z＜0.3, 1.6≤x/z≤2.25 및 8.5≤2n-z≤10을 만족하는 페라이트 가소체.
FERRITE CALCINED BODY MANUFACTURING METHOD OF FERRITE SINTERED MAGNET
An objective of the present invention is to provide a ferrite sintered magnet capable of having a magnetic property satisfying high Br, high HcJ and high Hk/HcJ all, while making the consumption of Co lower than an existing CaLaCo magnet. To achieve the objective, in regard to a general expression indicating an atom ratio of metallic elements of Ca, R, Sr, Fe and Co (here, R is at least one among rare-earth elements and an element necessarily including La): Ca1-x-yRxAyFe2n-zCoz, provided is a ferrite plasticized body, wherein x, y and z and n (here, 2n is a molar ratio, and expressed as 2n=(Fe＋Co)/(Ca＋R＋Sr)) satisfy 0.4<=x＜0.5, 0＜y<=0.2, 0.18＜z＜0.3, 1.6<=x/z<=2.25 and 8.5<=2n-z<=10.
[과제] 높은 Br, 높은 HcJ 및 높은 Hk/HcJ 모두를 만족하는 자석 특성을 가짐과 함께, 종래 CaLaCo 자석보다 Co의 사용량을 삭감한 페라이트 소결 자석의 제공. [해결수단] Ca, R, Sr, Fe 및 Co의 금속 원소(단, R은 희토류 원소 중 적어도 1종이며 La를 필수로 포함하는 원소)의 원자비를 나타내는 일반식: Ca1-x-yRxAy Fe2n-zCoz에 있어서, 상기 x, y 및 z, 그리고 n(단, 2n은 몰비이며, 2n=(Fe＋Co)/(Ca＋R＋Sr)로 표현된다)이, 0.4≤x＜0.5, 0＜y≤0.2, 0.18＜z＜0.3, 1.6≤x/z≤2.25 및 8.5≤2n-z≤10을 만족하는 페라이트 가소체.
FERRITE CALCINED BODY MANUFACTURING METHOD OF FERRITE SINTERED MAGNET
페라이트 가소체, 페라이트 소결 자석의 제조 방법
KOBAYASHI YOSHINORI (author)
2022-03-31
Patent
Electronic Resource
Korean
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