KR100909701B1 - 영구자석 및 그 제조방법 - Google Patents
영구자석 및 그 제조방법 Download PDFInfo
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- KR100909701B1 KR100909701B1 KR1020027015458A KR20027015458A KR100909701B1 KR 100909701 B1 KR100909701 B1 KR 100909701B1 KR 1020027015458 A KR1020027015458 A KR 1020027015458A KR 20027015458 A KR20027015458 A KR 20027015458A KR 100909701 B1 KR100909701 B1 KR 100909701B1
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Abstract
Description
샘플 | Js (T) | Br (T) | Hcj (kA/m) |
1 | 0.447 | 0.434 | 348 |
2 | 0.442 | 0.430 | 327 |
3 | 0.446 | 0.431 | 335 |
4 | 0.460 | 0.444 | 234 |
5 | 0.444 | 0.431 | 334 |
6 | 0.446 | 0.433 | 341 |
7 | 0.455 | 0.440 | 256 |
비교예 1 | 0.451 | 0.437 | 251 |
비교예 2 | 0.431 | 0.418 | 245 |
CaO (wt%) | SiO2 (wt%) | Cr2O3 (wt%) | Al2O3 (wt%) | Br (T) | Hcj (kA/m) |
0.3 | 0.3 | 0 | 0 | 0.439 | 327 |
0.6 | 0.3 | 0 | 0 | 0.443 | 324 |
0.6 | 0.45 | 1.0 | 1.0 | 0.427 | 355 |
0.6 | 0.45 | 0 | 0 | 0.443 | 329 |
0.6 | 0.45 | 0.5 | 0.5 | 0.436 | 347 |
샘플 | Js (T) | Br (T) | Hcj (kA/m) |
8 | 0.447 | 0.434 | 350 |
9 | 0.446 | 0.433 | 352 |
10 | 0.442 | 0.430 | 355 |
11 | 0.447 | 0.434 | 349 |
12 | 0.448 | 0.434 | 347 |
13 | 0.445 | 0.432 | 345 |
14 | 0.447 | 0.434 | 352 |
15 | 0.447 | 0.434 | 349 |
16 | 0.448 | 0.434 | 351 |
Claims (37)
- 삭제
- 삭제
- SrCO3, BaCO3, PbO, 및 CaCO3로 되는 군에서 선택되는 적어도 1종류의 원료분말과, Y를 포함하는 희토류원소 및 Bi로 되는 군에서 선택되는 적어도 1종의 원소의 산화물로 반드시 La2O3를 포함하는 산화물의 원료분말과, Fe2O3의 원료분말을 혼합하는 것에 의하여 제조되는 모체재용 원료혼합분말을 준비하는 공정과,상기 모체재용 원료혼합분말을 1100℃ 이상 1450℃ 이하의 온도에서 가소하고, 이것에 의하여 (1-x)AO·(x/2)R2O3·nFe2O3의 조성식으로 표현되고, M형 마그네트 플럼바이트 구조를 가지고, A는 Sr, Ba, Pb 및 Ca로 되는 군에서 선택되는 적어도 1종의 원소, R은 Y를 포함하는 희토류원소 및 Bi 로 되는 군에서 선택되는 적어도 1종의 원소로 반드시 La를 포함하는 원소, 0.05≤x≤0.3, 5.0≤n≤6.5인 페라이트의 가소체를 형성하는 공정과,Co, Ni, Mn 및 Zn으로 되는 군에서 선택되는 적어도 1종의 원소의 산화물원료분말과, Fe2O3의 원료분말을 혼합하는 것에 의하여 제조되는 첨가재용 원료혼합분말을 준비하는 공정과,상기 첨가재용 원료혼합분말을 700℃ 이상 1450℃ 이하의 온도에서 가소하고, 이것에 의하여 MO·Fe2O3, M은 Co, Ni, Mn 및 Zn으로 되는 군에서 선택되는 적어도 1종의 원소인 조성식으로 표현되고, 스피넬형 구조를 가지는 페라이트의 가소체를 형성하는 공정과,상기 M형 마그네트 플럼바이트 구조를 가지는 페라이트의 가소체에 상기 스피넬 페라이트의 가소체를 0.2중량% 이상 6.2중량% 이하 첨가하는 것에 의하여 제조되는 가소체 혼합분말을 준비하는 공정을 포함하는 페라이트 가소체분말의 제조방법.
- Sr, Ba, Pb 및 Ca로 되는 군에서 선택되는 적어도 1종의 원소의 염화물, Y를 포함하는 희토류원소 및 Bi로 되는 군에서 선택되는 적어도 1종의 원소 R의 염화물로 반드시 La의 염화물을 포함하는 염화물, 및 Fe의 염화물이 용해된 pH〈6의 모체재용 혼합용액을 준비하는 공정과,상기 모체재용 혼합용액을 800℃ 이상 1400℃ 이하의 가열분위기중에 분무하는 것에 의하여 가소하고, 이것에 의하여 (1-x)AO·(x/2)R2O3·nFe2O3의 조성식으로 표현되고, M형 마그네트 플럼바이트 구조를 가지고, A는 Sr, Ba, Pb, 및 Ca로 되는 군에서 선택되는 적어도 1종의 원소, R은 Y를 포함하는 희토류원소 및 Bi 로 되는 군에서 선택되는 적어도 1종의 원소로 반드시 La를 포함하는 원소, 0.05≤x≤0.3, 5.0≤n≤6.5인 페라이트의 가소체를 형성하는 공정과,Co, Ni, Mn 및 Zn으로 되는 군에서 선택되는 적어도 1종의 원소의 산화물 원료분말과, Fe2O3의 원료분말을 혼합하는 것에 의하여 제조되는 첨가재용 원료혼합분말을 준비하는 공정과,상기 첨가재용 원료혼합분말을 700℃ 이상 1450℃ 이하의 온도에서 가소하고, 이것에 의하여 MO·Fe2O3, M은 Co, Ni, Mn 및 Zn으로 되는 군에서 선택되는 적어도 1종의 원소인 조성식으로 표현되고, 스피넬형 구조를 가지는 페라이트의 가소체를 형성하는 공정과,상기 M형 마그네트 플럼바이트 구조를 가지는 페라이트의 가소체에 상기 스피넬 구조를 가지는 페라이트의 가소체를 0.2중량% 이상 6.2중량% 이하 첨가하는 것에 의하여 제조되는 가소체 혼합분말을 준비하는 공정을 포함하는 페라이트 가소체분말의 제조방법.
- 제3항 또는 제4항에 기재된 페라이트 가소체 분말의 제조방법에 의하여 형성되는 가소체 분말을 분쇄하고, 공기투과법으로 측정한 평균입도가 0.2㎛ 이상 2.0㎛ 이하의 범위내에 있는 페라이트 분쇄 미분말을 형성하는 공정과,상기 페라이트 분쇄 미분말을 900℃ 이상 1450℃ 이하의 온도에서 다시 가소하는 공정을 포함하는 페라이트 가소체 분말의 제조방법.
- 제3항 또는 제4항에 있어서, 상기 원소M의 산화물의 일부 또는 전부로 치환되고, 원소M의 수산화물을 이용하는 페라이트 가소체 분말의 제조방법.
- 제3항에 있어서, 상기 모체재용 원료혼합분말에 원소A 또는 원소R의 황산염을 첨가하는 것을 특징으로 하는 페라이트 가소체 분말의 제조방법.
- 제4항에 있어서, 상기 모체재용 혼합용액에 원소A 또는 원소R의 황산염을 첨가하는 것을 특징으로 하는 페라이트 가소체 분말의 제조방법.
- 제3항에 있어서, 상기 모체재용 원료혼합분말을 준비하는 공정 및/또는 상기 첨가재용 원료혼합분말을 준비하는 공정에서, B2O3 및/또는 H3BO3를 첨가하는 것을 특징으로 하는 페라이트 가소체 분말의 제조방법.
- 제4항에 있어서, 상기 모체재용 혼합용액을 준비하는 공정 및/또는 상기 첨가재용 혼합용액을 준비하는 공정에서, B2O3 및/또는 H3BO3를 첨가하는 것을 특징으로 하는 페라이트 가소체 분말의 제조방법.
- 제5항에 있어서, 상기 페라이트 가소체 분말을 분쇄하는 공정에서, B2O3 및/또는 H3BO3를 첨가하는 것을 특징으로 하는 페라이트 가소체 분말의 제조방법.
- 제3항 또는 제4항에 기재된 페라이트 가소체 분말의 제조방법에 의해서 형성된 가소체 분말을 미분쇄하고, 공기투과법으로 측정한 평균입도를 0.2㎛ 이상 2.0㎛ 이하의 범위 내로 하는 자성분말의 제조방법.
- 제3항 또는 제4항에 기재된 페라이트 가소체 분말의 제조방법에 의하여 형성되는 가소체 분말에, CaO:0.3중량% 이상 1.5중량% 이하, SiO2:0.2중량% 이상 1.0중량% 이하, Cr2O3:0중량% 이상 5.0중량% 이하, Al2O3:0중량% 이상 5.0중량% 이하를 첨가한 가소체 혼합분말을 준비하는 공정과,상기 가소체 혼합분말을 미분쇄하고, 공기투과법으로 측정한 평균입도를 0.2㎛ 이상 2.0㎛ 이하의 범위 내의 페라이트 미분쇄분말을 형성하는 공정을 포함하는 자성분말의 제조방법.
- 삭제
- 제12항에 기재된 자성분말의 제조방법에 의하여 제조된 자성분말을 포함하는 자기기록매체.
- 제13항에 기재된 자성분말의 제조방법에 의해서 제조된 자성분말을 포함하는 자기기록매체.
- 삭제
- 제12항에 기재된 자성분말의 제조방법에 의해서 제조된 자성분말에서 제조되는 본드자석.
- 제13항에 기재된 자성분말의 제조방법에 의해서 제조된 자성분말에서 제조되는 본드자석.
- 삭제
- 제12항에 기재된 자성분말의 제조방법에 의해서 제조된 자성분말에서 제조되는 소결자석.
- 제13항에 기재된 자성분말의 제조방법에 의해서 제조된 자성분말에서 제조되는 소결자석.
- 제12항에 기재된 자성분말의 제조방법에 의해서 제조된 자성분말에 대해서 열처리를 수행하는 공정과,상기 열처리가 시행된 자성분말에서 본드자석을 제조하는 공정을 포함하는 자석의 제조방법.
- 제13항에 기재된 자성분말의 제조방법에 의해서 제조된 자성분말에 대해서 열처리를 수행하는 공정과,상기 열처리가 시행된 자성분말에서 본드자석을 제조하는 공정을 포함하는 자석의 제조방법.
- 제23항에 있어서, 상기 열처리를 700℃ 이상 1100℃ 이하의 온도에서 실행하는 자석의 제조방법.
- 제24항에 있어서, 상기 열처리를 700℃ 이상 1100℃ 이하의 온도에서 실행하는 자석의 제조방법.
- 삭제
- 제12항에 기재된 자성분말의 제조방법에 의하여 제조되는 자성분말을 준비하는 공정과,상기 자성분말을, 농축, 혼련, 자장중 성형 또는 무자장중 성형, 소결하는 공정을 포함하는 소결자석의 제조방법.
- 제13항에 기재된 자성분말의 제조방법에 의하여 제조되는 자성분말을 준비하는 공정과,상기 자성분말을, 농축, 혼련, 자장중 성형 또는 무자장중 성형, 소결하는 공정을 포함하는 소결자석의 제조방법.
- 제12항에 기재된 자성분말의 제조방법에 의하여 제조되는 자성분말을 준비하는 공정과,상기 자성분말을, 농축, 혼련, 건조, 해쇄, 자장중성형 또는 무자장중성형, 소결하는 공정을 포함하는 소결자석의 제조방법.
- 제13항에 기재된 자석분말의 제조방법에 의하여 제조되는 자석분말을 준비하는 공정과,상기 자석분말을, 농축, 혼련, 건조, 해쇄, 자장중성형 또는 무자장중성형, 소결하는 공정을 포함하는 소결자석의 제조방법.
- 제28항에 있어서, 분쇄시 또는 혼련시 분산제를 고형분 비율로 0.2중량% 이상 2.0중량% 이하 첨가하는 소결자석의 제조방법.
- 제29항에 있어서, 분쇄시 또는 혼련시 분산제를 고형분 비율로 0.2중량% 이상 2.0중량% 이하 첨가하는 소결자석의 제조방법.
- 제30항에 있어서, 분쇄시 또는 혼련시 분산제를 고형분 비율로 0.2중량% 이상 2.0중량% 이하 첨가하는 소결자석의 제조방법.
- 제31항에 있어서, 분쇄시 또는 혼련시 분산제를 고형분 비율로 0.2중량% 이상 2.0중량% 이하 첨가하는 소결자석의 제조방법.
- 삭제
- 삭제
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JP2001243821A JP2002313618A (ja) | 2001-02-07 | 2001-08-10 | 永久磁石、およびその製造方法 |
PCT/JP2002/000994 WO2002063640A1 (en) | 2001-02-07 | 2002-02-06 | Permanent magnet and method for preparation thereof |
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KR100909701B1 true KR100909701B1 (ko) | 2009-07-29 |
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EP (2) | EP1365423B1 (ko) |
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KR (2) | KR100909701B1 (ko) |
CN (2) | CN1228793C (ko) |
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AU2003304097A1 (en) | 2003-05-07 | 2004-11-26 | Meiji University Legal Person | Spinel type ferrimagnetic powder and magnetic recording medium |
EP1693355A1 (en) * | 2003-12-09 | 2006-08-23 | TDK Corporation | Ferrite magnetic material and ferrite sintered magnet |
WO2005085153A1 (ja) * | 2004-03-04 | 2005-09-15 | Tdk Corporation | フェライト磁性材料、フェライト焼結磁石及びその製造方法 |
US7758767B2 (en) * | 2004-09-10 | 2010-07-20 | Neomax Co., Ltd. | Oxide magnetic material and sintered magnet |
CN100415653C (zh) * | 2005-03-24 | 2008-09-03 | 上海大学 | 纳米尖晶石型ZnFe2O4的制备方法 |
JP4820312B2 (ja) * | 2006-03-31 | 2011-11-24 | Dowaエレクトロニクス株式会社 | ボンド磁石用フェライト磁性粉およびその製造方法、並びにボンド磁石 |
BR112012022418A2 (pt) * | 2010-03-10 | 2024-03-12 | Hitachi Metals Ltd | Eletroíma de ferrita sinterizado e seu método de produção |
JP5499329B2 (ja) * | 2010-06-18 | 2014-05-21 | 日立金属株式会社 | フェライト焼結磁石及びその製造方法 |
CN102097195B (zh) * | 2010-12-22 | 2012-04-11 | 娄底市玖鑫电子科技有限公司 | 一种宽温低功率损耗铁氧体磁性材料 |
CN104961462B (zh) * | 2015-06-20 | 2018-02-27 | 宁波博莱特光电科技股份有限公司 | 一种高强度氧化锆陶瓷插芯的制备方法 |
CN104926299B (zh) * | 2015-06-20 | 2018-01-16 | 宁波博莱特光电科技股份有限公司 | 一种陶瓷插芯的制备方法 |
US20170018285A1 (en) * | 2015-07-14 | 2017-01-19 | HGST Netherlands B.V. | Barium hexa-ferrite technology for mamr and advanced magnetic recording applications |
CN105036726B (zh) * | 2015-07-24 | 2017-05-24 | 天长市中德电子有限公司 | 一种高性能Mn‑Zn铁氧体材料及制备方法 |
CN105036725A (zh) * | 2015-07-24 | 2015-11-11 | 天长市中德电子有限公司 | 一种Mn-Zn铁氧体材料及制备方法 |
CN106589363B (zh) * | 2016-12-23 | 2019-03-26 | 安徽工业大学 | 一种聚苯胺/w型锶铁氧体复合材料的制备方法及其应用 |
JP7082033B2 (ja) * | 2017-11-13 | 2022-06-07 | Dowaエレクトロニクス株式会社 | ボンド磁石用フェライト粉末およびその製造方法 |
JP7071513B2 (ja) * | 2018-08-28 | 2022-05-19 | 富士フイルム株式会社 | マグネトプランバイト型六方晶フェライトの粉体の製造方法及び電波吸収体の製造方法 |
KR20210089152A (ko) * | 2018-11-02 | 2021-07-15 | 로저스코포레이션 | 저 손실 전력 페라이트 및 이의 제조방법 |
CN109516797B (zh) * | 2018-12-19 | 2021-05-25 | 北矿科技股份有限公司 | 一种低sfd磁记录材料及其制备方法 |
CN109741764B (zh) * | 2018-12-19 | 2020-12-18 | 北矿科技股份有限公司 | 一种磁记录材料及其制备方法 |
CN109735215B (zh) * | 2018-12-19 | 2021-04-13 | 北矿科技股份有限公司 | 一种磁性层及其制备方法 |
TWI693206B (zh) * | 2019-03-08 | 2020-05-11 | 中國鋼鐵股份有限公司 | 改質鐵氧體磁粉的製造方法及鐵氧體磁石的製造方法 |
CN111205078A (zh) * | 2020-01-13 | 2020-05-29 | 桂林电子科技大学 | 一种Bi1-xNdxFeO3稀土铁氧体磁性吸波材料的制备方法 |
CN113072368B (zh) * | 2021-03-15 | 2022-05-13 | 杭州电子科技大学 | 一种高性能m型铁氧体的气氛烧结方法 |
CN115124336A (zh) * | 2021-03-26 | 2022-09-30 | 日立金属株式会社 | 铁氧体预烧体和铁氧体烧结磁体的制造方法 |
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CN115784315B (zh) * | 2022-06-24 | 2024-04-30 | 西北大学 | 一种用于基于化学链燃烧的高效二氧化碳捕集的氧载体及其制备方法和应用 |
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EP1365424A4 (en) | 2006-05-03 |
US6955768B2 (en) | 2005-10-18 |
US7144642B2 (en) | 2006-12-05 |
CN1462453A (zh) | 2003-12-17 |
EP1365424B1 (en) | 2009-08-19 |
CN1462452A (zh) | 2003-12-17 |
CN1220991C (zh) | 2005-09-28 |
CN1228793C (zh) | 2005-11-23 |
EP1365423A1 (en) | 2003-11-26 |
WO2002063640A1 (en) | 2002-08-15 |
EP1365423A4 (en) | 2006-04-26 |
DE60233385D1 (de) | 2009-10-01 |
WO2002063641A1 (fr) | 2002-08-15 |
US20040061090A1 (en) | 2004-04-01 |
KR20030072211A (ko) | 2003-09-13 |
EP1365423B1 (en) | 2017-01-04 |
EP1365424A1 (en) | 2003-11-26 |
KR100824786B1 (ko) | 2008-04-24 |
US20040053075A1 (en) | 2004-03-18 |
KR20030084560A (ko) | 2003-11-01 |
JP2002313618A (ja) | 2002-10-25 |
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