KR880011042A - 세라믹스 제품 및 그 제조방법 - Google Patents

세라믹스 제품 및 그 제조방법 Download PDF

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Publication number
KR880011042A
KR880011042A KR1019880003112A KR880003112A KR880011042A KR 880011042 A KR880011042 A KR 880011042A KR 1019880003112 A KR1019880003112 A KR 1019880003112A KR 880003112 A KR880003112 A KR 880003112A KR 880011042 A KR880011042 A KR 880011042A
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South Korea
Prior art keywords
oxide
weight
aluminum oxide
less
fine powder
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KR1019880003112A
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English (en)
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KR910009894B1 (ko
Inventor
고이찌 하야시
다께시 스즈끼
Original Assignee
고가 요시네
도도 기끼 가부시끼가이샤
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Priority claimed from JP62072671A external-priority patent/JPS63236756A/ja
Priority claimed from JP62072672A external-priority patent/JPH0688832B2/ja
Application filed by 고가 요시네, 도도 기끼 가부시끼가이샤 filed Critical 고가 요시네
Publication of KR880011042A publication Critical patent/KR880011042A/ko
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Publication of KR910009894B1 publication Critical patent/KR910009894B1/ko

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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
    • C04B35/10—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 aluminium oxide
    • 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
    • C04B35/10—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 aluminium oxide
    • C04B35/111—Fine ceramics
    • C04B35/115—Translucent or transparent products

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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)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

내용 없음

Description

세라믹스 제품 및 그 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1 실시예에 관한 제조방법의 각 공정을 표시한 블록도.
제2도는 제1 실시예의 혼합미분말을 얻는 공정의 변경예를 표시하는 블록도.
제3도는 제2 실시예에 관한 제조방법의 각 공정을 표시하는 블럭도.

Claims (8)

  1. 산화알루미늄에 0.7-0.3 중량%의 산화크롬이 고용(固溶)한 평균입경 2.O??m이하의 결정 또는 산화알루미늄에 0.7-0.3 중량%의 산화크롬 및 0.05중량%이하의 산화마그네슘이 고용한 평균입경 2.O??m이하의 결정으로 되고, 내부에 존재하는 포어의 직경이 0.1??m 이하이며, 4??m 이상의 조대립(粗大粒)이 존재하지 않고, 경도가 2000HV 이상인 것을 특징으로하는 세라믹스 제품.
  2. 산화크롬을 0.7-3.0중량%, 산화마그네슘을 0-0.05중량%, 산화알루미늄을 잔부로한 산화물의 혼합 미분말에 유기바인더를 가하여 일정형상으로 성형하고, 이 성형체를 1280-1350℃에서 소결하고, 이어서 이 소결체에 1300-1310℃, 1000-2000 기압 조건하에 열간정수압(熱間靜水壓)프레스를 하는 것을 특징으로하는 세라믹스 제품의 제조방법.
  3. 제2항에 있어서, 산화물의 혼합분말이 알루미늄염, 크롬염 및 마그네슘염을 칭량하여 현탁수용액으로 하고, 이 현탁수용액을 분무건법으로 건조하여 미분말화하고, 이 미분말을 가열분해하여 얻어지는 것이 특징인 세라믹스 제품의 제조방법.
  4. 제2항에 있어서, 성형체의 소결을 대기중, 10-3-10-6TOrr의 진공중 또는 N2,Ar, 또는 H2의 분위하에서 수행함이 특징인 세라믹스 제품의 제조방법.
  5. 산화알루미늄 단독 또는 산화알루미늄에 0.05중량%이하의 산화마그네슘이 고용한 평균입경 2.O??m이하의 결정으로 구성되며 내부에 4??m이상의 조대립(粗大粒)을 함유하지 않으며, 내재하는 포어의 직경이 0.1??m이하에서 경도가 2000HV이상이며, 또한 만곡강도가 70kg/mm2이상인 것을 특징으로 하는 세라믹스 제품.
  6. 산화알루미늄 또는 0.5중량%이하의 산화마그네슘을 함유하는 산화알루미늄에 유기바인더를 가해 일정 형태로 성형하고, 이 성형체를 1280-1350℃에서 소결하고, 이어서 이 소결체에 1300~1310℃, 1000~2000기압의 조건하에 열간정수압(熱間靜水壓)프레스를 하는 것을 특징으로 하는 세라믹스 제품의 제조방법.
  7. 제6항에 있어서, 산화알루미늄을 알루미늄염 용액을 분무건조법으로 건조하여 미분말화하고, 이 미분말을 가열분해하여 얻어지도록 한 것이 특징인 세라믹스제품의 제조방법.
  8. 제6항에 있어서, 성형체의 소결을 대기중, 10-3-10-6TOrr의 진공중 혹은 N2,Al 또는 H2의 분위기중에서 수행함이 특징인 세라믹스 제품의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880003112A 1987-03-26 1988-03-23 세라믹스 제품 및 그 제조방법 KR910009894B1 (ko)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP62-72672 1987-03-26
JP62072671A JPS63236756A (ja) 1987-03-26 1987-03-26 多結晶人造ルビ−及びその製造方法
JP62-72671 1987-03-26
JP62072672A JPH0688832B2 (ja) 1987-03-26 1987-03-26 多結晶セラミックス製品及びその製造方法
JP?62-72671 1987-03-26
JP?62-72672 1987-03-26

Publications (2)

Publication Number Publication Date
KR880011042A true KR880011042A (ko) 1988-10-26
KR910009894B1 KR910009894B1 (ko) 1991-12-03

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KR1019880003112A KR910009894B1 (ko) 1987-03-26 1988-03-23 세라믹스 제품 및 그 제조방법

Country Status (4)

Country Link
US (1) US4952537A (ko)
EP (1) EP0284418B1 (ko)
KR (1) KR910009894B1 (ko)
DE (1) DE3887999T2 (ko)

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JPH03168140A (ja) * 1989-11-29 1991-07-19 Tosoh Corp 歯列矯正ブラケット及びその製造方法
EP0614861B1 (en) * 1992-10-01 2001-05-23 Nihon Cement Co., Ltd. Method of manufacturing titania and alumina ceramic sintered bodies
US5352643A (en) * 1992-11-03 1994-10-04 Board Of Control Of Michigan Technological University High strength alumina and process for producing same
US5731251A (en) * 1993-07-12 1998-03-24 Nihon Cement Co., Ltd. Oxide ceramic sintered bodies
EP0678489A1 (de) * 1994-04-19 1995-10-25 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Alumina-Sinterprodukt und Verfahren zu seiner Herstellung
GB9526339D0 (en) * 1995-12-22 1996-02-21 Cohen A N Modified sintered material
CA2308933C (en) 1999-05-19 2008-07-22 Ngk Spark Plug Co., Ltd. Translucent polycrystalline ceramic and method for making same
US6648638B2 (en) 2001-12-28 2003-11-18 3M Innovative Properties Company Orthodontic appliances including polycrystalline alumina-based ceramic material, kits, and methods
US6878456B2 (en) 2001-12-28 2005-04-12 3M Innovative Properties Co. Polycrystalline translucent alumina-based ceramic material, uses, and methods
US8133051B2 (en) 2004-08-27 2012-03-13 Tosoh Corporation Orthodontic bracket and process for producing the same
JP4983545B2 (ja) * 2007-10-30 2012-07-25 東ソー株式会社 高靭性透光性アルミナ焼結体及びその製造方法並びに用途
US8253233B2 (en) 2008-02-14 2012-08-28 Infineon Technologies Ag Module including a sintered joint bonding a semiconductor chip to a copper surface
EP3219691B1 (fr) * 2016-03-15 2019-02-27 The Swatch Group Research and Development Ltd. Céramique polycristalline rouge opaque

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US3377178A (en) * 1966-05-23 1968-04-09 Harbison Walker Refractories High alumina brick
US3725094A (en) * 1971-09-20 1973-04-03 Grace W R & Co Doped alumina powder
DE2314442A1 (de) * 1973-03-23 1974-10-03 Rosenthal Stemag Tech Keramik Verfahren zum herstellen einer hochverschleissfesten al tief 2 o tief 3-keramik
JPS5037806A (ko) * 1973-06-27 1975-04-08
US3862845A (en) * 1974-02-25 1975-01-28 Taylors Sons Co Chas Alumina refractories having a permanent expansion upon heating
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JPS6059189B2 (ja) * 1977-09-14 1985-12-24 黒崎窯業株式会社 超緻密質ガラス炉用焼結耐火レンガ及びその製造法
US4418024A (en) * 1982-05-25 1983-11-29 General Electric Company Process for producing optically translucent ceramic
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JPS5997572A (ja) * 1982-11-22 1984-06-05 科学技術庁無機材質研究所長 多結晶人造ルビ−の製造法
JPS60103090A (ja) * 1983-11-07 1985-06-07 京セラ株式会社 高アルミナ含有焼結体及びその製造方法
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Also Published As

Publication number Publication date
DE3887999T2 (de) 1994-06-09
EP0284418A1 (en) 1988-09-28
US4952537A (en) 1990-08-28
EP0284418B1 (en) 1994-03-02
KR910009894B1 (ko) 1991-12-03
DE3887999D1 (de) 1994-04-07

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