KR20090032636A - 저온 소결용 페라이트 분말 및 그 제조방법 - Google Patents
저온 소결용 페라이트 분말 및 그 제조방법 Download PDFInfo
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- KR20090032636A KR20090032636A KR1020070098021A KR20070098021A KR20090032636A KR 20090032636 A KR20090032636 A KR 20090032636A KR 1020070098021 A KR1020070098021 A KR 1020070098021A KR 20070098021 A KR20070098021 A KR 20070098021A KR 20090032636 A KR20090032636 A KR 20090032636A
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Abstract
Description
Claims (10)
- mol%로 Fe2O3:47.0 ~ 49.0%, NiO:16.0 ~24.0%, ZnO:18.0~25.0%, CuO:7.0 ~ 13.0%, Li2O:0.1 ~1.0% 및 V2O5:0.1~1.0% 로 구성된 것을 특징으로 하는 저온 소결용 페라이트 분말.
- 제1항에 있어서,상기 Li2O 와 V2O5는 동일한 mol%로 이루어진 것을 특징으로 하는 저온 소결용 페라이트 분말.
- 산화철(Fe2O3), 산화니켈(NiO), 산화아연(ZnO), 산화구리(CuO), 산화리튬(Li2O) 및 산화바다늄(V2O5)의 출발원료를 에탄올이 함유된 증류수에 혼합하는 단계;상기 출발원료들과 에탄올이 혼합된 혼합액에 비드(bead)를 칭량하여 혼합한 후 그 혼합액을 액상에서 밀링하는 단계;상기 혼합된 용액을 건조하는 단계;건조된 분말을 700 내지 800℃의 온도에서 하소하는 단계; 및상기 분말의 하소 후에 페라이트 분말을 제조하는 단계;를 포함하는 저온 소결용 페라이트의 제조방법.
- 제3항에 있어서,상기 건조된 분말을 하소하는 단계에서, 그 하소 온도는 이차상인 헤마타이트(α-Fe2O3) 상이 생성되지 않고 페라이트 단일상이 생성되는 온도인 700 내지 800℃로 설정되는 것을 특징으로 하는 저온 소결용 페라이트의 제조방법.
- 제3항에 있어서,상기 페라이트 분말을 제조하는 단계에서, 페라이트 분말 Fe2O3:47.0 ~ 49.0%, NiO:16.0 ~24.0%, ZnO:18.0~25.0%, CuO:7.0 ~ 13.0%, Li2O:0.1 ~1.0% 및 V2O5:0.1~1.0%의 mol%를 갖는 것을 특징으로 하는 저온 소결용 페라이트의 제조방법.
- 제5항에 있어서,상기 Li2O와 V2O5는 동일한 mol%로 형성된 것을 특징으로 하는 저온 소결용 페라이트의 제조방법.
- 제1항에 있어서,페라이트 분말을 제조하는 단계 이 후에 상기 저온 소결용 페라이트 분말을 PVA 등의 바인더와 혼합 후 토로이달 형태의 코어로 만드는 단계; 및상기 제조된 토로이달 코어 시편을 소성하는 단계;를 더 포함하는 저온 소결용 페라이트의 제조방법.
- 제3항에 있어서상기 증류수는와 에탄올은 100 : 5의 중량비로 혼합된 것을 특징으로 하는 저온 소결용 페라이트의 제조방법.
- 제3항에 있어서,상기 출발원료들과 에탄올이 혼합된 증류수와 이에 혼합되는 비드의 혼합 비율은 1 : 5의 중량비로 혼합되는 것을 특징으로 하는 저온 소결용 페라이트의 제조방법.
- 제3항에 있어서,상기 출발원료가 혼합된 증류수 및 에탄올의 혼합액은 비표면적이 3.0 ~ 5.0 m2/g에 이르기까지의 밀링 시간으로 분쇄되는 것을 특징으로 하는 저온 소결용 페라이트의 제조방법.
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KR101218998B1 (ko) * | 2010-11-26 | 2013-01-04 | 삼성전기주식회사 | 세라믹 전자부품용 자성체 조성물, 그 제조방법 및 이를 이용한 세라믹 전자부품 |
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US20040135738A1 (en) | 2001-08-25 | 2004-07-15 | Kim Si Han | Portable multi-display device |
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KR100279373B1 (ko) * | 1995-08-04 | 2001-01-15 | 이형도 | 연자성페라이트의제조방법 |
JP4404408B2 (ja) | 1999-07-29 | 2010-01-27 | 京セラ株式会社 | 高飽和磁束密度フェライト材料及びこれを用いたフェライトコア |
JP2001053483A (ja) | 1999-08-04 | 2001-02-23 | Fuji Elelctrochem Co Ltd | ニッケル−亜鉛系フェライト電波吸収体 |
JP4431850B2 (ja) * | 2001-03-22 | 2010-03-17 | 住友金属工業株式会社 | 酸化物磁性材料とその製造方法および積層チップインダクタ |
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KR101218998B1 (ko) * | 2010-11-26 | 2013-01-04 | 삼성전기주식회사 | 세라믹 전자부품용 자성체 조성물, 그 제조방법 및 이를 이용한 세라믹 전자부품 |
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