FR2294747B1 - - Google Patents

Info

Publication number
FR2294747B1
FR2294747B1 FR7539164A FR7539164A FR2294747B1 FR 2294747 B1 FR2294747 B1 FR 2294747B1 FR 7539164 A FR7539164 A FR 7539164A FR 7539164 A FR7539164 A FR 7539164A FR 2294747 B1 FR2294747 B1 FR 2294747B1
Authority
FR
France
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.)
Expired
Application number
FR7539164A
Other languages
French (fr)
Other versions
FR2294747A1 (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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of FR2294747A1 publication Critical patent/FR2294747A1/en
Application granted granted Critical
Publication of FR2294747B1 publication Critical patent/FR2294747B1/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
    • C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
    • C30B15/36—Single-crystal growth by pulling from a melt, e.g. Czochralski method characterised by the seed, e.g. its crystallographic orientation
    • 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
    • C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
FR7539164A 1974-12-20 1975-12-19 PROCESS FOR PREPARING MASSIVE MONOCRISTALLINE ALPHA ALUMINA Granted FR2294747A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53509374A 1974-12-20 1974-12-20

Publications (2)

Publication Number Publication Date
FR2294747A1 FR2294747A1 (en) 1976-07-16
FR2294747B1 true FR2294747B1 (en) 1982-03-19

Family

ID=24132809

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7539164A Granted FR2294747A1 (en) 1974-12-20 1975-12-19 PROCESS FOR PREPARING MASSIVE MONOCRISTALLINE ALPHA ALUMINA

Country Status (4)

Country Link
JP (1) JPS5612280B2 (en)
DE (1) DE2555610C3 (en)
FR (1) FR2294747A1 (en)
GB (1) GB1530608A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004083407A (en) * 2002-08-24 2004-03-18 Carl Zeiss Stiftung Method and device for growing corundum single crystal
JP5888198B2 (en) * 2012-09-26 2016-03-16 住友金属鉱山株式会社 Sapphire single crystal manufacturing equipment
EP4174221A1 (en) * 2021-11-02 2023-05-03 Comadur S.A. Method for manufacturing a monocrystalline sapphire seed as well as a sapphire monocrystal with preferential crystallographic orientation and trim and functional components for timepieces and jewellery

Also Published As

Publication number Publication date
JPS5187197A (en) 1976-07-30
FR2294747A1 (en) 1976-07-16
GB1530608A (en) 1978-11-01
DE2555610C3 (en) 1979-11-22
DE2555610B2 (en) 1979-04-05
DE2555610A1 (en) 1976-07-01
JPS5612280B2 (en) 1981-03-19

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