KR950031992A - 니켈 페라이트 및 이로 제조된 전원용 코어 - Google Patents

니켈 페라이트 및 이로 제조된 전원용 코어 Download PDF

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KR950031992A
KR950031992A KR1019950005082A KR19950005082A KR950031992A KR 950031992 A KR950031992 A KR 950031992A KR 1019950005082 A KR1019950005082 A KR 1019950005082A KR 19950005082 A KR19950005082 A KR 19950005082A KR 950031992 A KR950031992 A KR 950031992A
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less
mol
nickel ferrite
ferrite sintered
sintered body
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KR1019950005082A
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KR100371982B1 (ko
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에미 나카가와
히토시 우에다
아키오 우치카와
노리카즈 고유하라
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도야마 이와오
히타치페라이트 가부시키가이샤
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2666—Other ferrites containing nickel, copper or cobalt
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Magnetic Ceramics (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

본 발명은 Fe2O348.0 내지 50.0mol% Nio 14.0 내지 24.0mol% 및 ZnO 28.0 내지 36.0mol%를 포함하고, 불순물로서의 인(P)이 50ppm 이하이며 50KHz 및 50mT에서의 최소 코어 손실이 30kw/m3이고, 결정 구조에서 P의 응리율이 면적당 1% 이하인 니켈 페라이트 소결체에 관한 것이다. 니켈 페라이트 소결체는 바람직하게는 평균 결정 크레인(grain) 크기가 3 내지 30㎛이고, 평균 결정 그레인 크기보다 2배가 큰 결정 크레인 입자의 비율이, 결정 구조의 결정 그레인 입자의 총수를 기준으로 하여, 바람직하게는 10% 이하이다.

Description

니켈 페라이트 및 이로 제조된 전원용 코어
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 인(P)의 분리율이 작은 샘플 No.41을 나타내는 개략도이고; 제2도는 P의 분리율이 큰 샘플 No.41을 나타내는 개략도이며; 제3도는 본 발명에 따르는 각종 니켈 페라이트 소결체(sintered body)의 코어(core)에 대한 ZnO함량과 코어 손실이 최소가 될 수 있는 온도와의 관계를 나타내는 그래프이고; 제4도는 본 발명에 따른 각종 니켈 페라이트 소결체의 코어에 있어서 온도에 따르는 코어 손실 변화를 나타내는 그래프이다.

Claims (9)

  1. Fe2O348.0 내지 50.0mol% 포함하고 50KHz 및 50mT에서의 최소 코어 손실이 30kw/m3이하인 니켈 페라이트 소결체.
  2. Fe2O348.0 내지 50.0mol% 포함하고 결정구조에서 인(P)의 응리율이 면적당 1% 이하인 니켈 페라이트 소결체.
  3. Fe2O348.0 내지 50.0mol% 포함하고 P를 20ppm 이하 함유하며 평균 그레인(grain) 크기가 3 내지 30㎛인 니켈 페라이트 소결체.
  4. ZnO를 28.0 내지 36.0mol% 포함하고 20 내지 140℃의 온도에서 수득되는 최소 코어 손실이 50KHz 및 50mT에서 30kw/m3이하인 니켈 페라이트 소결체.
  5. Fe2O348.0 내지 50.0mol%, NiO 14.0 내지 24.0mol% 및 ZnO를 28.0 내지 36.0mol% 포함하고 50KHz 및 50mT에서의 최소 코어 손실이 30kw/m3이하인 니켈 페라이트 소결체.
  6. NiO 12mol% 이하(0mol%는 제외)가 동량의 CuO로 대체된 니켈 페라이트 소결체.
  7. 7ppm 이하의 P를 함유하고, 결정 구조에서 P의 응리율이 면적당 1% 이하이며 50KHz 및 50mT에서의 최소 코어 손실이 30kw/m3이하인 니켈 페라이트 소결체.
  8. 평균 결정 그레인 크기가 3 내지 30㎛이고, 평균 결정 그레인 크기보다 2배가 큰 결정 그레인 입자의 비율이, 결정 구조의 결정 그레인 입자의 총수를 기준으로 하여, 10%이하이고 50KHz 및 50mT에서의 최소 코어 손실이 30kw/m3이하인 니켈 페라이트 소결체.
  9. 50KHz 및 50mT에서의 최소 코어 손실이 30kw/m3이하인 니켈 페라이트 소결체로 제조된 전원용 코어.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950005082A 1994-03-16 1995-03-13 니켈 페라이트 소결체 및 이로 제조된 전원용 코어 KR100371982B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP94-072497 1994-03-16
JP7249794 1994-03-16

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KR950031992A true KR950031992A (ko) 1995-12-20
KR100371982B1 KR100371982B1 (ko) 2003-03-19

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KR1019950005082A KR100371982B1 (ko) 1994-03-16 1995-03-13 니켈 페라이트 소결체 및 이로 제조된 전원용 코어

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US (1) US5618464A (ko)
JP (2) JP2001015322A (ko)
KR (1) KR100371982B1 (ko)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6533956B2 (en) * 1999-12-16 2003-03-18 Tdk Corporation Powder for magnetic ferrite, magnetic ferrite, multilayer ferrite components and production method thereof
JP4915889B2 (ja) * 2002-04-04 2012-04-11 日立金属株式会社 低損失Ｎｉ−Ｚｎ系フェライト
US7195717B2 (en) 2003-07-28 2007-03-27 Kyocera Corporation Ferrite core for RFID application, method of manufacturing the same, and ferrite coil using the same
JP3907642B2 (ja) * 2004-05-21 2007-04-18 Ｔｄｋ株式会社 フェライト材料及びフェライト材料の製造方法
JP5699540B2 (ja) * 2010-10-29 2015-04-15 Tdk株式会社 フェライト組成物、フェライトコアおよび電子部品
JP5699542B2 (ja) * 2010-11-02 2015-04-15 Tdk株式会社 フェライト組成物、フェライトコアおよび電子部品
JP5831256B2 (ja) * 2012-01-26 2015-12-09 Tdk株式会社 フェライト組成物、フェライトコアおよび電子部品
JP5831254B2 (ja) * 2012-01-26 2015-12-09 Tdk株式会社 フェライト組成物、フェライトコアおよび電子部品

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2933565A (en) * 1953-04-15 1960-04-19 Siemens Ag Magnetic transducers
US3573208A (en) * 1968-09-19 1971-03-30 Philips Corp Method of manufacturing ferrites of high resistivity
US4059664A (en) * 1971-12-14 1977-11-22 Thomson-Csf Method of manufacturing ferrimagnetic material for recording, read out and erase heads utilized in magnetic layer devices
JP2729486B2 (ja) * 1988-07-09 1998-03-18 富士電気化学株式会社 電波吸収体用ニッケル−亜鉛系フェライト材
US5198138A (en) * 1989-04-19 1993-03-30 Toda Kogyo Corp. Spherical ferrite particles and ferrite resin composite for bonded magnetic core

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JP2001015322A (ja) 2001-01-19
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KR100371982B1 (ko) 2003-03-19

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