FR2161747A1 - Corundum single crystal growth - using a modified aluminium oxide mixt - Google Patents

Corundum single crystal growth - using a modified aluminium oxide mixt

Info

Publication number
FR2161747A1
FR2161747A1 FR7137673A FR7137673A FR2161747A1 FR 2161747 A1 FR2161747 A1 FR 2161747A1 FR 7137673 A FR7137673 A FR 7137673A FR 7137673 A FR7137673 A FR 7137673A FR 2161747 A1 FR2161747 A1 FR 2161747A1
Authority
FR
France
Prior art keywords
single crystal
crystal growth
aluminium oxide
mixt
modified aluminium
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.)
Granted
Application number
FR7137673A
Other languages
French (fr)
Other versions
FR2161747B1 (en
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.)
TSEITLIN POLINA
Original Assignee
TSEITLIN POLINA
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 TSEITLIN POLINA filed Critical TSEITLIN POLINA
Priority to FR7137673A priority Critical patent/FR2161747A1/en
Publication of FR2161747A1 publication Critical patent/FR2161747A1/en
Application granted granted Critical
Publication of FR2161747B1 publication Critical patent/FR2161747B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
    • C30B11/04—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt
    • C30B11/08—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt every component of the crystal composition being added during the crystallisation
    • C30B11/10—Solid or liquid components, e.g. Verneuil method
    • 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
    • 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
    • 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
    • C30B29/22—Complex oxides
    • C30B29/26—Complex oxides with formula BMe2O4, wherein B is Mg, Ni, Co, Al, Zn, or Cd and Me is Fe, Ga, Sc, Cr, Co, or Al
    • 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
    • C01P2004/52—Particles with a specific particle size distribution highly monodisperse 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
    • C01P2004/61—Micrometer sized, i.e. from 1-100 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
    • C01P2006/80—Compositional purity
    • 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
    • C01P2006/82—Compositional purity water content

Abstract

Powder mixts. for growing single corundum crystals for use as artificial gems, and contg. 74-99 wt.% alpha-Al2O3, 0-6 wt.% colouring agent (esp. Cr, Fe, Ni, Ti, V or Co) and 1-20 wt.% AlF3, are made by heating Al(OH)3 and the colouring agent at 1100-1200 degrees C for about 2 hrs. After sieving, the AlF3 is well mixed in. Alternatively all three components can be heated together to give a higher yield of prod. but with less control of the crystal compsn. The mixt. is not hygroscopic and enables crystals to be grown at 8-12, mm/hr. with a wide range of isomorphic incorporation of colouring agents.
FR7137673A 1971-10-20 1971-10-20 Corundum single crystal growth - using a modified aluminium oxide mixt Granted FR2161747A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7137673A FR2161747A1 (en) 1971-10-20 1971-10-20 Corundum single crystal growth - using a modified aluminium oxide mixt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7137673A FR2161747A1 (en) 1971-10-20 1971-10-20 Corundum single crystal growth - using a modified aluminium oxide mixt

Publications (2)

Publication Number Publication Date
FR2161747A1 true FR2161747A1 (en) 1973-07-13
FR2161747B1 FR2161747B1 (en) 1974-06-21

Family

ID=9084644

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7137673A Granted FR2161747A1 (en) 1971-10-20 1971-10-20 Corundum single crystal growth - using a modified aluminium oxide mixt

Country Status (1)

Country Link
FR (1) FR2161747A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115368120A (en) * 2022-09-20 2022-11-22 苏州晶瓷超硬材料有限公司 Alumina ceramic and production process thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433183A (en) * 1965-05-13 1966-03-25 Safe especially for hot air distribution installation in living quarters or others

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433183A (en) * 1965-05-13 1966-03-25 Safe especially for hot air distribution installation in living quarters or others

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115368120A (en) * 2022-09-20 2022-11-22 苏州晶瓷超硬材料有限公司 Alumina ceramic and production process thereof

Also Published As

Publication number Publication date
FR2161747B1 (en) 1974-06-21

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Legal Events

Date Code Title Description
ST Notification of lapse