WO2008149690A1 - 良焼結性αアルミナ及びその製造方法 - Google Patents

良焼結性αアルミナ及びその製造方法 Download PDF

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Publication number
WO2008149690A1
WO2008149690A1 PCT/JP2008/059522 JP2008059522W WO2008149690A1 WO 2008149690 A1 WO2008149690 A1 WO 2008149690A1 JP 2008059522 W JP2008059522 W JP 2008059522W WO 2008149690 A1 WO2008149690 A1 WO 2008149690A1
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WO
WIPO (PCT)
Prior art keywords
sintering
alumina
bulk density
sinter
hours
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2008/059522
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English (en)
French (fr)
Inventor
Masahiko Abe
Toshihiro Matsuba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Light Metal Co Ltd
Original Assignee
Nippon Light Metal Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Light Metal Co Ltd filed Critical Nippon Light Metal Co Ltd
Publication of WO2008149690A1 publication Critical patent/WO2008149690A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
    • C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • 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
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/11—Powder tap density
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

　低温で容易に焼結すると共に、１５００°Cで３時間の焼結条件での焼結嵩密度が３．９０g/cm3以上であって、焼結時の密度変化が極めて低い焼結特性に優れた良焼結性αアルミナ及びその製造方法を提供する。 　バイヤー法で得られた水酸化アルミニウムを焼成して製造されるαアルミナであって、１５００°Cで３時間の焼結条件での焼結嵩密度（焼結後試料の質量／焼結後試料の体積）Ａが３．９０g/cm3以上であり、かつ、この焼結嵩密度Ａと１６００°Cで３時間の焼結条件での焼結嵩密度Ｂとの間の密度変化率｛［（Ｂ－Ａ）／Ａ］×１００｝が１%以下である良焼結性αアルミナであり、ソーダ分含有量０．１質量%以下の水酸化アルミニウムを定置型焼成炉の炉内に仕込み嵩密度１．０g/cm3以下の条件で仕込み、焼成し粉砕して製造される。
PCT/JP2008/059522 2007-06-07 2008-05-23 良焼結性αアルミナ及びその製造方法 Ceased WO2008149690A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-151268 2007-06-07
JP2007151268A JP5217258B2 (ja) 2007-06-07 2007-06-07 良焼結性αアルミナ及びその製造方法

Publications (1)

Publication Number Publication Date
WO2008149690A1 true WO2008149690A1 (ja) 2008-12-11

Family

ID=40093514

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/059522 Ceased WO2008149690A1 (ja) 2007-06-07 2008-05-23 良焼結性αアルミナ及びその製造方法

Country Status (2)

Country Link
JP (1) JP5217258B2 (ja)
WO (1) WO2008149690A1 (ja)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5978926A (ja) * 1982-10-29 1984-05-08 Mitsubishi Chem Ind Ltd 易焼結性アルミナの製造方法
JPH0393617A (ja) * 1989-09-04 1991-04-18 Showa Denko Kk 易焼結アルミナの製造方法
JPH06144831A (ja) * 1992-10-30 1994-05-24 Showa Denko Kk 微粒・易焼結性アルミナの製造方法
JPH08290914A (ja) * 1995-02-21 1996-11-05 Sumitomo Chem Co Ltd α−アルミナおよびその製造方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4890758B2 (ja) * 2003-12-25 2012-03-07 昭和電工株式会社 易焼結性アルミナ粒子

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5978926A (ja) * 1982-10-29 1984-05-08 Mitsubishi Chem Ind Ltd 易焼結性アルミナの製造方法
JPH0393617A (ja) * 1989-09-04 1991-04-18 Showa Denko Kk 易焼結アルミナの製造方法
JPH06144831A (ja) * 1992-10-30 1994-05-24 Showa Denko Kk 微粒・易焼結性アルミナの製造方法
JPH08290914A (ja) * 1995-02-21 1996-11-05 Sumitomo Chem Co Ltd α−アルミナおよびその製造方法

Also Published As

Publication number Publication date
JP5217258B2 (ja) 2013-06-19
JP2008303105A (ja) 2008-12-18

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