KR910006145A - 플레이트렛 형태의 α-알루미나 거대결정체 및 이의 제조방법 - Google Patents
플레이트렛 형태의 α-알루미나 거대결정체 및 이의 제조방법 Download PDFInfo
- Publication number
- KR910006145A KR910006145A KR1019900014770A KR900014770A KR910006145A KR 910006145 A KR910006145 A KR 910006145A KR 1019900014770 A KR1019900014770 A KR 1019900014770A KR 900014770 A KR900014770 A KR 900014770A KR 910006145 A KR910006145 A KR 910006145A
- Authority
- KR
- South Korea
- Prior art keywords
- flux
- alumina
- fluoride
- macrocrystals
- diameter
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/16—Oxides
- C30B29/20—Aluminium oxides
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B9/00—Single-crystal growth from melt solutions using molten solvents
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
- C01P2004/22—Particle morphology extending in two dimensions, e.g. plate-like with a polygonal circumferential shape
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Paper (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (12)
- 플레이트렛이 2내지 20㎛의 직경, 0.1내지 2㎛의 두께 및 5내지 40의 직경/두께 비율을 가짐을 특징으로 하는 단결정질 육방 플레이트렛(platelet)의 형태를 주로 가지는 α-알루미나의 거대결정체.
- 제1항에 있어서, 육방 플레이트렛은 7내지 18㎛의 직경 및 0.1내지 1㎛의 두께를 가짐을 특징으로 하는 거대한 결정체.
- 사용된 융제는 800℃이하의 용융점을 가지며 화학적으로 결합된 플루오르를 함유하며, 용융된 상태에서 전이 알루미나 또는 수화된 알루미나를 용해시킴을 특징으로 하는, 전이 알루미나(Transition alumina) 또는 수화된 알루미나 및 융제(flux)로부터 제1또는 2항에 따른 거대결정체를 제조하는 방법.
- 제3항에 있어서, 융제는 1종 이상의 비가수분해성 플루오르화 화합물로 주로 구성되거나, 또는 전술한 화합물(들)로 구성된 상 및 가수분해성 플로오르화 화합물로 구성된 두번째 상을 포함하며 상기 상들 중의 하나가 다른 상에 용해되는 시스템으로 주로 구성됨을 특징으로 하는 방법.
- 제4항에 있어서, 융제는 한편으로는 알루미늄 트리폴루오라이드 및 다른 한편으로는 하나 이상의 알카리금속 플루오라이드 또는 알카리토금속 플루오라이드로 형성된 시스템으로 구성됨을 특징으로 하는 방법.
- 제5항에 있어서, 알카리금속 플루오라이드 또는 알칼리토금속 플루오라이드는 리튬플루오라이드, 나트륨루오라이드, 칼륨플루오라이드 및 칼슘플루오라이드에서 선택됨을 특징으로 하는 방법.
- 제4항내지 6항중 어느 한항에 있어서, 융제는 Li₃A1F6(리튬크리올라이트) 또는 Li₃Na(A1F6)2 (크리올리티오나이트) 또는 3A1F₃, 5LiF(리튬키올라이트) 형태의 A1F3-LiF로 구성됨을 특징으로 하는 방법.
- 제4내지 7항중 어느 한항에 있어서, 융제는 소성시킬 전이 알루미나 또는 수화된 알루미나의 중량을 기준으로 적어도 융제 2% 및 바람직하게는 4내지 20%의 융제의 양으로 사용함을 특징으로 하는 방법.
- 제4내지 8항중 어느 한항에 있어서, 전이 알루미나 또는 수화된 알루미나는 적어도 50(중량)%의 입자가 50㎛이하의 직경을 가지는 분말로 구성되며, 전술한 알루미나는 100㎡/g 이상의 특징으로 하는 방법.
- 제8항에 있어서, 알루미나는 15중량% 아하의 물을 함유함을 특징으로 하는 방법.
- 제4내지 10항중 어느 한항에 있어서, 소성 온도는 900내지 1100℃임을 특징으로 하는 방법.
- 연마 생성물 제조용, 또는 매트릭스용, 특별하게는 세라믹 매트릭스 또는 금속 또는 중합체 매트릭스용 보강 재료로서 제1또는 2항에 따른-알루미나의 거대결정체의 용도.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8912402A FR2652075B1 (fr) | 1989-09-21 | 1989-09-21 | Macrocristaux d'alumine alpha sous forme de plaquettes et procede d'obtention. |
FR12402/1989 | 1989-09-21 | ||
FR12402 | 1989-09-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR910006145A true KR910006145A (ko) | 1991-04-27 |
KR950003419B1 KR950003419B1 (ko) | 1995-04-12 |
Family
ID=9385725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019900014770A KR950003419B1 (ko) | 1989-09-21 | 1990-09-18 | 플레이트렛 형태의 α-알루미나 거대결정체 및 이의 제조방법 |
Country Status (15)
Country | Link |
---|---|
EP (1) | EP0425325B1 (ko) |
JP (1) | JP2564205B2 (ko) |
KR (1) | KR950003419B1 (ko) |
CN (1) | CN1047576C (ko) |
AT (1) | ATE98304T1 (ko) |
AU (1) | AU627933B2 (ko) |
CA (1) | CA2025037A1 (ko) |
DD (1) | DD295885A5 (ko) |
DE (1) | DE69005077T2 (ko) |
DK (1) | DK0425325T3 (ko) |
ES (1) | ES2060108T3 (ko) |
FR (1) | FR2652075B1 (ko) |
IE (1) | IE903320A1 (ko) |
IL (1) | IL95719A0 (ko) |
NO (1) | NO903690L (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7103300B2 (en) | 2004-01-05 | 2006-09-05 | Samsung Electronics Co., Ltd. | Process cartridge for image forming apparatus |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
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AU639326B2 (en) * | 1990-05-23 | 1993-07-22 | Atochem | Ceramic preforms comprising monocrystalline hexagonal platelets of alpha-alumina, their production and applications thereof |
WO1993024681A1 (en) * | 1992-06-02 | 1993-12-09 | Sumitomo Chemical Company, Limited | α-ALUMINA |
CA2099734A1 (en) * | 1992-07-01 | 1994-01-02 | Akihiko Takahashi | Process for preparing polyhedral alpha-alumina particles |
RU2136596C1 (ru) | 1993-11-25 | 1999-09-10 | Сумитомо Кемикал Компани, Лимитед | СПОСОБ ПОЛУЧЕНИЯ ПОРОШКА α--ОКСИДА АЛЮМИНИЯ И ПОРОШОК α--ОКСИДА АЛЮМИНИЯ |
FR2715169B1 (fr) * | 1994-01-14 | 1996-04-05 | Atochem Elf Sa | Macrocristaux renfermant du nitrure d'aluminium sous forme de plaquettes, leur procédé de préparation et leurs utilisations. |
JP3416855B2 (ja) * | 1994-04-15 | 2003-06-16 | 株式会社フジミインコーポレーテッド | 研磨用組成物および研磨方法 |
AU699077B2 (en) * | 1995-02-21 | 1998-11-19 | Sumitomo Chemical Company, Limited | Alpha-alumina and method for producing the same |
FR2734812B1 (fr) * | 1995-05-31 | 1997-07-04 | Atochem Elf Sa | Procede de preparation de pieces foreuses en ceramique comprenant des plaquettes monocristallines d'alumine alpha |
TW460548B (en) * | 1998-12-23 | 2001-10-21 | Merck Patent Gmbh | Pigment mixture |
JP4270848B2 (ja) * | 2002-11-08 | 2009-06-03 | 昭和電工株式会社 | アルミナ粒子及びその製造方法 |
AU2003900030A0 (en) | 2003-01-07 | 2003-01-23 | Advanced Nano Technologies Pty Ltd | Process for the production of ultrafine plate-like alumina particles |
JP4841851B2 (ja) * | 2005-03-02 | 2011-12-21 | 電気化学工業株式会社 | アルミナ及びその製造方法 |
CN100348494C (zh) * | 2005-08-26 | 2007-11-14 | 郑州大学 | 一种高分散性α-Al2O3纳米粉体的制备方法 |
JP5211467B2 (ja) * | 2006-11-22 | 2013-06-12 | 日本軽金属株式会社 | 多面体形状α−アルミナの製造方法 |
KR100803049B1 (ko) * | 2007-08-31 | 2008-02-22 | (주)제이피에스 마이크로텍 | 마이크로파를 이용한 박편상의 산화알루미늄 제조방법 |
DE102009014638A1 (de) | 2009-03-24 | 2010-09-30 | Clariant International Ltd. | Laminate enthaltend harte, plattenförmige Mineralien |
JPWO2013133300A1 (ja) * | 2012-03-09 | 2015-07-30 | 旭硝子株式会社 | ガラスセラミックス体、積層体、携帯型電子機器用筐体、および携帯型電子機器 |
JP5720848B2 (ja) * | 2012-09-28 | 2015-05-20 | Dic株式会社 | 多面体形状のα−アルミナ微粒子の製造方法 |
CN102924092A (zh) * | 2012-10-24 | 2013-02-13 | 江苏大学 | 一种高分散片状氧化铝的低成本、无污染制备方法 |
JP6229661B2 (ja) * | 2012-11-07 | 2017-11-15 | 旭硝子株式会社 | ガラスセラミックス基板およびこの基板を用いた携帯型電子機器用筐体 |
JP6646864B2 (ja) * | 2015-06-01 | 2020-02-14 | Dic株式会社 | 板状アルミナ粒子の製造方法 |
CN104925843A (zh) * | 2015-06-03 | 2015-09-23 | 清华大学 | 利用复合铝盐制备薄片状α-Al2O3珠光颜料基材的方法 |
CN108560052B (zh) * | 2018-04-26 | 2020-05-01 | 闽江学院 | 一种单晶六方氧化铝的制备方法及其应用 |
US20220081310A1 (en) * | 2019-01-25 | 2022-03-17 | Dic Corporation | Tabular alumina particle and method for manufacturing tabular alumina particle |
JP6708281B2 (ja) * | 2019-03-27 | 2020-06-10 | Dic株式会社 | 板状アルミナ粒子 |
EP4041828A1 (en) | 2019-10-09 | 2022-08-17 | DIC Corporation | Plate-like alumina particle and method for manufacturing plate-like alumina particle |
US20230096825A1 (en) * | 2019-10-09 | 2023-03-30 | Dic Corporation | Plate-like alumina particle and method for manufacturing plate-like alumina particle |
CN110938862A (zh) * | 2019-12-23 | 2020-03-31 | 苏州纳迪微电子有限公司 | 高纯度单晶刚玉粉体及其制备方法 |
CN114057505B (zh) * | 2021-12-13 | 2023-02-28 | 西安邮电大学 | 一种多孔片状氧化铝框架的制备方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB935390A (en) * | 1960-12-20 | 1963-08-28 | Gen Electric Co Ltd | Improvements in or relating to the manufacture of corundum crystals |
JPS5215498A (en) * | 1975-07-28 | 1977-02-05 | Showa Denko Kk | Process for production of granular corrundum |
DE2623482C2 (de) * | 1976-05-26 | 1985-06-27 | Alcoa Chemie GmbH, 6700 Ludwigshafen | Verfahren zur Herstellung eines kristallinen Aluminiumoxids für Polier-, Läpp- und Schleifmittel |
DE2850064B1 (de) * | 1978-11-18 | 1980-05-08 | Giulini Chemie | Hexagonale tafelfoermige alpha-Aluminiumoxid-Einkristalle und Verfahren zu ihrer Herstellung |
JPS5819640A (ja) * | 1981-07-27 | 1983-02-04 | Matsushita Electric Ind Co Ltd | 空気調和機等の温度制御装置 |
JPS6033763A (ja) * | 1983-08-05 | 1985-02-21 | Nippon Telegr & Teleph Corp <Ntt> | 速度選択通信方式 |
JPS6054916A (ja) * | 1983-09-06 | 1985-03-29 | 坂東 尚周 | 六角薄板状d−Al↓2O↓3粒子及びその製造法 |
JPS6433055A (en) * | 1987-07-27 | 1989-02-02 | Sumitomo Cement Co | Sintered body of alumina having high strength and its production |
US5009676A (en) * | 1989-04-28 | 1991-04-23 | Norton Company | Sintered sol gel alumina abrasive filaments |
JP3207739B2 (ja) * | 1996-01-19 | 2001-09-10 | 松下電器産業株式会社 | 画像再生装置 |
-
1989
- 1989-09-21 FR FR8912402A patent/FR2652075B1/fr not_active Expired - Lifetime
-
1990
- 1990-08-22 NO NO90903690A patent/NO903690L/no unknown
- 1990-09-11 CA CA002025037A patent/CA2025037A1/fr not_active Abandoned
- 1990-09-12 IE IE332090A patent/IE903320A1/en unknown
- 1990-09-17 DD DD90344059A patent/DD295885A5/de not_active IP Right Cessation
- 1990-09-18 KR KR1019900014770A patent/KR950003419B1/ko not_active IP Right Cessation
- 1990-09-18 IL IL95719A patent/IL95719A0/xx unknown
- 1990-09-19 JP JP2249896A patent/JP2564205B2/ja not_active Expired - Fee Related
- 1990-09-20 DE DE69005077T patent/DE69005077T2/de not_active Expired - Fee Related
- 1990-09-20 EP EP90402599A patent/EP0425325B1/fr not_active Expired - Lifetime
- 1990-09-20 AU AU62697/90A patent/AU627933B2/en not_active Ceased
- 1990-09-20 ES ES90402599T patent/ES2060108T3/es not_active Expired - Lifetime
- 1990-09-20 AT AT90402599T patent/ATE98304T1/de not_active IP Right Cessation
- 1990-09-20 DK DK90402599.6T patent/DK0425325T3/da active
- 1990-09-21 CN CN90107756A patent/CN1047576C/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7103300B2 (en) | 2004-01-05 | 2006-09-05 | Samsung Electronics Co., Ltd. | Process cartridge for image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
CA2025037A1 (fr) | 1991-03-22 |
IE903320A1 (en) | 1991-04-10 |
EP0425325A1 (fr) | 1991-05-02 |
NO903690L (no) | 1991-03-22 |
DD295885A5 (de) | 1991-11-14 |
ATE98304T1 (de) | 1993-12-15 |
DE69005077T2 (de) | 1994-05-26 |
CN1047576C (zh) | 1999-12-22 |
JP2564205B2 (ja) | 1996-12-18 |
FR2652075B1 (fr) | 1991-12-06 |
IL95719A0 (en) | 1991-06-30 |
EP0425325B1 (fr) | 1993-12-08 |
DE69005077D1 (de) | 1994-01-20 |
CN1050366A (zh) | 1991-04-03 |
JPH03131517A (ja) | 1991-06-05 |
AU627933B2 (en) | 1992-09-03 |
NO903690D0 (no) | 1990-08-22 |
DK0425325T3 (da) | 1994-02-14 |
ES2060108T3 (es) | 1994-11-16 |
AU6269790A (en) | 1991-04-11 |
FR2652075A1 (fr) | 1991-03-22 |
KR950003419B1 (ko) | 1995-04-12 |
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