KR900015187A - 고성능 스트론튬 페라이트 자석의 제조방법 - Google Patents

고성능 스트론튬 페라이트 자석의 제조방법 Download PDF

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Publication number
KR900015187A
KR900015187A KR1019900004266A KR900004266A KR900015187A KR 900015187 A KR900015187 A KR 900015187A KR 1019900004266 A KR1019900004266 A KR 1019900004266A KR 900004266 A KR900004266 A KR 900004266A KR 900015187 A KR900015187 A KR 900015187A
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South Korea
Prior art keywords
high performance
strontium
koe
magnetic field
powder
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KR1019900004266A
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English (en)
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KR930003198B1 (ko
Inventor
오쿠모리 쿠니오
테라다 카주오
Original Assignee
아오야기 데쓰오
스미토모 도꾸슈 긴조구 가부시기가이샤
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    • 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
    • H01F1/032—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 hard-magnetic materials
    • H01F1/04—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 hard-magnetic materials metals or alloys
    • 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
    • C04B35/2683—Other ferrites containing alkaline earth metals or lead
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/58—Processes of forming magnets

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

Abstract

내용 없음.

Description

고성능 스트론튬 페라이트 자석의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (7)

  1. 고성능 스트론튬 페라이트 자석의 제조방법에 있어서, 평균 입자직경이 12마이크론을 넘지 않는 분말을 얻기 위하여 철광석 또는 밀스케일로 부터 선택된 물질을 분쇄하는 단계, 상기 분말을 산화시켜 적어도 98.0％의 Fe2O3를 포함하는 산화철을 형성하기 위하여, 산소 존재하에 600℃내지 900℃의 온도로 상기 입자를 가열하는 단계, 스트론튬 산화물 뜬 탄산염으로 부터 선택된 스트론튬 화합물을 상기 산화철과 혼합하는 단계, 그들의 혼합물을 하소하는 단계, 상기 하소된 생성물을 분쇄하는 단계, 자장 중에서 상기 분쇄된 생성물을 성형하는 단계, 및 상기 성형된 생성물을 소결하는 단계를 포함하는 것을 특징으로 하는 제조 방법.
  2. 제1항에 있어서, 상기 페라이트는 5.6내지 6.2:1의 몰비를 갖는 Fe2O3및 SrO로 필수적으로 구성되는 것을 특징으로 하는 제조방법.
  3. 제1항에 있어서, SiO2, CaO, Al2O3,CoO 및 NiO중 적어도 하나를 2％보다 많지 않는양으로 첨가하는 단계를 부가하여 포함하는 것을 특징으로 하는 제조 방법.
  4. 제1항에 있어서, 상기 자석은 4.0내지 4.2KG의 Br, 3.7내지 3.9KOe의 Hc, 3.8내지 4.2MGOe(BH)max 및 4.0내지 4.2KOe의 iHc 값을 갖는 것을 특징으로 하는 제조방법.
  5. 제1항 내지 4하중의 어느한항에 있어서, 상기 가열단계는 0.1내지 1.5시간의 범위에서 행하여지는 것을 특징으로 하는 제조방법.
  6. 제5항에 있어서, 상기 자장은 7내지 15KOe의 자화력을 각고 상기 성형단계는 0.3내지 0.6㎏/㎠의 압력으로 행하여 지는 것을 특징으로하는 제조방법.
  7. 제6항에 있어서, 상기 소결단계는 1200℃내지 1270℃의 온도 및 0.5내지 1.5시간의 유지시간을 사용하여 잔화 분위기 중에서 행하여 지는 것을 특징으로 하는 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900004266A 1989-03-31 1990-03-30 고성능 스트론튬 페라이트 자석의 제조방법 KR930003198B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP81789 1989-03-31
JP1-81789 1989-03-31
JP8178989 1989-03-31

Publications (2)

Publication Number Publication Date
KR900015187A true KR900015187A (ko) 1990-10-26
KR930003198B1 KR930003198B1 (ko) 1993-04-23

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KR1019900004266A KR930003198B1 (ko) 1989-03-31 1990-03-30 고성능 스트론튬 페라이트 자석의 제조방법

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US (1) US5061412A (ko)
KR (1) KR930003198B1 (ko)

Cited By (1)

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KR20020016254A (ko) * 2000-08-25 2002-03-04 신현준 페라이트 영구자석의 제조방법

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US5160472A (en) * 1984-10-24 1992-11-03 Zachariades Anagnostis E Method of producing composite structures of ultra-high-molecular-weight polymers, such as ultra-high-molecular-weight polyethylene products
US5648039A (en) * 1992-04-24 1997-07-15 Tdk Corporation Process for the production of anisotropic ferrite magnets
EP0719745B1 (en) * 1992-04-24 2003-06-18 TDK Corporation Anisotropic ferrite magnet and process for the production thereof.
US5945028A (en) * 1992-04-24 1999-08-31 Tdk Corporation Hexagonal system ferrite particles and their production process
JP3611872B2 (ja) * 1993-09-28 2005-01-19 株式会社Ｎｅｏｍａｘ フェライト磁石用原料の製造方法
JPH09260124A (ja) * 1996-03-26 1997-10-03 Sumitomo Special Metals Co Ltd フェライト磁石及びその製造方法
US10614939B2 (en) 2014-01-31 2020-04-07 Saudi Basic Industries Corporation Hard magnetic compositions from iron oxide fines and methods for making same
CN110482583A (zh) * 2019-08-29 2019-11-22 重庆庆龙新材料科技有限公司 一种用于制备氧化锶的碳酸锶成型煅烧工艺
CN114163226A (zh) * 2021-12-16 2022-03-11 湖南航天磁电有限责任公司 一种使用超级铁精粉制备锶永磁铁氧体预烧料的方法

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US3855374A (en) * 1970-07-02 1974-12-17 Gen Motors Corp Method of making magnetically-anisotropic permanent magnets
US4062922A (en) * 1973-08-22 1977-12-13 Shell Oil Company Process for preparing strontium ferrites
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JPS5827212B2 (ja) * 1979-06-08 1983-06-08 同和鉱業株式会社 ６方晶フエライトの乾式製造法
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JPS61215220A (ja) * 1985-03-19 1986-09-25 Tetsugen:Kk 鉄鉱石からのフエライト原料用酸化鉄の製造方法
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020016254A (ko) * 2000-08-25 2002-03-04 신현준 페라이트 영구자석의 제조방법

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KR930003198B1 (ko) 1993-04-23
US5061412A (en) 1991-10-29

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