KR100845201B1 - 물성이 개선된 경제적인 페라이트형 자석 - Google Patents
물성이 개선된 경제적인 페라이트형 자석 Download PDFInfo
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Abstract
Description
Claims (24)
- 화학식이 M1-xRxFe12-yTyO19인 마그네토플럼바이트(magnetoplumbite) 상을 함유하는 페라이트형 자석에 있어서,원소 T의 낮은 비율과 동시에 적어도 580인 전체 성능 지수 (Global Index of Performance) GIP = Br + 0.5H (여기서, Br은 mT로 표현되는 잔류 유도이고, Hk는 B = 0.9 Br인 경우 kA/m으로 표현되는 장 H에 대응한다)를 갖고,- M은 Sr, Ba, Ca 및 Pb로 구성된 그룹으로부터 선택된 적어도 하나의 원소를 나타내며,- R은 희토류 및 Bi 중에서 선택된 적어도 하나의 원소를 나타내고,- T는 Co, Mn, Ni 및 Zn 중에서 선택된 적어도 하나의 원소를 나타내며,- 0.17 ≤ x ≤ 0.22- 0.65 < α= y/x < 0.80인 페라이트형 자석.
- 제1항에 있어서, α = y/x는 0.67 내지 0.77 범위에 속하는 것인 페라이트형 자석.
- 제1항 또는 제2항에 있어서, T로 지시된 원소의 원자 농도는 조건 [Co]/([Co]+[Zn]+[Mn]+[Ni]) > 30%를 충족시키는 것인 페라이트형 자석.
- 제3항에 있어서, T로 지시된 원소의 원자 농도는 조건 [Co]/([Co]+[Zn]+[Mn]+[Ni]) > 50%를 충족시키는 것인 페라이트형 자석.
- 제4항에 있어서, T로 지시된 원소의 원자 농도는 조건 [Co]/([Co]+[Zn]+[Mn]+[Ni]) ≥70%를 충족시키는 것인 페라이트형 자석.
- 제3항에 있어서, M = Sr 및 R = La인 것인 페라이트형 자석.
- 제1항 또는 제2항에 있어서, M은 Sr 및 Ba의 혼합물과 동일하며, Sr의 원자 백분율은 10% 내지 90% 사이이고 Ba의 원자 백분율은 90% 내지 10% 사이이며, R = La 및 T = Co인 페라이트형 자석.
- 제1항 또는 제2항에 있어서, M = Sr 및 R = La인 것인 페라이트형 자석.
- 제8항에 있어서, T = Co인 것인 페라이트형 자석.
- 삭제
- - M은 Sr, Ba, Ca 및 Pb로 구성된 그룹으로부터 선택된 적어도 하나의 원소를 나타내며,- R은 희토류 및 Bi 중에서 선택된 적어도 하나의 원소를 나타내고,- T는 Co, Mn, Ni 및 Zn 중에서 선택된 적어도 하나의 원소를 나타내는, 화학식 M1-xRxFe12-yTyO19 인 마그네토플럼바이트(magnetoplumbite) 상을 함유하는 페라이트형 자석을 제조하는 방법에 있어서,a) 0.17 ≤ x ≤ 0.22 및 0.65 < α = y/x < 0.80이라는 조건으로 화학식 M1-xRxFe12-yTyO19의 화학량론에 대응하는, 원소 M, R, T 및 Fe의 선구체 혼합물을 형성하고,b) 상기 혼합물을 통상의 온도 및 시간, 통상 1250℃의 영역에서 2 시간 동안의 조건 하에서 하소하여, 클링커를 얻고,c) 클링커를 첨가제를 선택적으로 투입하여 분쇄하여, 입자의 평균 사이즈가 1 μm 미만인 미세한 입자를 얻고,d) 상기 입자를 통상 1T의 배향 자기장의 영향을 받으며 1150 내지 1250℃ 범위의 온도에서 소결시키며,상기 페라이트형 자석은,- 적어도 580의 최대 전체 성능 지수 GIP를 갖거나,- 적어도 590 mT의 성능 지수 IP = Br + 0.5HcJ와, 통상 적어도 95%의 감자 곡선의 각형비 hK = Hk/HcJ (%) (여기서, Hk는 B = 0.9 Br인 경우 장 H에 대응한다)를 갖는 것인 제조 방법.
- 제11항에 있어서, 상기 혼합물은 0.67 < α = y/x < 0.77 조건을 충족시키는 것인 제조 방법.
- 제11 또는 제12항에 있어서, 상기 단계 d)에서 소결 온도는 1220℃ 이하인 것인 제조 방법.
- 제13항에 있어서, 상기 단계 d)에서 소결 온도는 1200℃ 미만인 것인 제조 방법.
- 제1항에 있어서, 상기 전체 성능 지수 (Global Index of Performance) GIP = Br + 0.5Hk는 적어도 585인 것인 페라이트형 자석.
- 삭제
- 삭제
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- 삭제
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FR0113542A FR2831317B1 (fr) | 2001-10-19 | 2001-10-19 | Aimants de type ferrite economiques et a proprietes ameliorees |
FR01/13542 | 2001-10-19 |
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FR (1) | FR2831317B1 (ko) |
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KR101082389B1 (ko) | 2011-05-31 | 2011-11-11 | 쌍용머티리얼 주식회사 | 마그네토플럼바이트형 페라이트 자성재료 및 이로부터 유도된 세그멘트형 영구자석 |
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WO2006028185A1 (ja) * | 2004-09-10 | 2006-03-16 | Neomax Co., Ltd. | 酸化物磁性材料および焼結磁石 |
TWI434302B (zh) | 2005-11-25 | 2014-04-11 | Hitachi Metals Ltd | 氧化物磁性材料及其製法、以及肥粒鐵燒結磁石和其製法 |
US7919007B2 (en) * | 2005-12-19 | 2011-04-05 | Tdk Corporation | Ferrite magnetic material |
JP5316737B2 (ja) * | 2006-01-11 | 2013-10-16 | Tdk株式会社 | フェライト磁性材料 |
HUE029918T2 (en) * | 2008-12-18 | 2017-04-28 | Tridelta Hartferrite Gmbh | Magnetically hard material |
CN103058641B (zh) * | 2011-12-14 | 2014-04-23 | 南京梅山冶金发展有限公司 | 一种制备非稀土高磁性永磁铁氧体材料的方法 |
JP5650270B2 (ja) * | 2013-03-29 | 2015-01-07 | 株式会社リケン | マグネトプランバイト型六方晶フェライト及びノイズ抑制シート |
CN104003704B (zh) * | 2014-02-27 | 2015-08-19 | 横店集团东磁股份有限公司 | 一种无镧钴永磁铁氧体的制备方法 |
CN104072124A (zh) * | 2014-06-30 | 2014-10-01 | 中钢天源(马鞍山)通力磁材有限公司 | 一种直流变频电机用永磁铁氧体磁体的制备方法 |
CN107324406B (zh) * | 2017-07-31 | 2019-09-24 | 电子科技大学 | 一种复合改性的锶铁氧体粉体的制备方法 |
WO2021010571A1 (ko) * | 2019-07-15 | 2021-01-21 | 한양대학교 에리카산학협력단 | 육각판상 형태의 페라이트 구조체 및 그 제조방법 |
JP2021155317A (ja) * | 2020-03-30 | 2021-10-07 | Tdk株式会社 | フェライト焼結磁石および回転電気機械 |
KR20220026315A (ko) * | 2020-08-25 | 2022-03-04 | 현대자동차주식회사 | GHz 대역의 전자파 흡수입자 및 이를 포함하는 전자파 흡수재 |
KR20220026316A (ko) * | 2020-08-25 | 2022-03-04 | 현대자동차주식회사 | GHz 대역의 전자파 흡수입자 및 이를 포함하는 전자파 흡수재 |
CN112299836A (zh) * | 2020-11-25 | 2021-02-02 | 南通冠优达磁业有限公司 | 一种高频低损耗软磁铁氧体材料及制备方法 |
CN115849894B (zh) * | 2022-11-07 | 2023-11-10 | 安徽龙磁科技股份有限公司 | 一种高磁特性永磁铁氧体材料及其制备方法 |
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EP0758786A1 (en) * | 1995-08-11 | 1997-02-19 | TDK Corporation | Magnet powder, sintered magnet, bonded magnet, and magnetic recording medium |
EP0905718A1 (en) * | 1997-02-25 | 1999-03-31 | TDK Corporation | Oxide magnetic material, ferrite particle, sintered magnet, bonded magnet, magnetic recording medium and motor |
US6258290B1 (en) | 1997-09-19 | 2001-07-10 | Tdk Corporation | Magnet powder, sintered magnet, process for producing them, bonded magnet, motor and magnetic recording medium |
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KR101082389B1 (ko) | 2011-05-31 | 2011-11-11 | 쌍용머티리얼 주식회사 | 마그네토플럼바이트형 페라이트 자성재료 및 이로부터 유도된 세그멘트형 영구자석 |
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CN100386288C (zh) | 2008-05-07 |
FR2831317A1 (fr) | 2003-04-25 |
KR20050036879A (ko) | 2005-04-20 |
EP1438270A1 (fr) | 2004-07-21 |
CN1571761A (zh) | 2005-01-26 |
WO2003033432A1 (fr) | 2003-04-24 |
US20040251997A1 (en) | 2004-12-16 |
BR0213387A (pt) | 2004-12-21 |
FR2831317B1 (fr) | 2004-10-15 |
MXPA04003449A (es) | 2004-07-08 |
JP2005505944A (ja) | 2005-02-24 |
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