FR2172913B1 - - Google Patents

Info

Publication number
FR2172913B1
FR2172913B1 FR7206602A FR7206602A FR2172913B1 FR 2172913 B1 FR2172913 B1 FR 2172913B1 FR 7206602 A FR7206602 A FR 7206602A FR 7206602 A FR7206602 A FR 7206602A FR 2172913 B1 FR2172913 B1 FR 2172913B1
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
FR7206602A
Other languages
French (fr)
Other versions
FR2172913A1 (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
Priority to FR7206602A priority Critical patent/FR2172913A1/en
Publication of FR2172913A1 publication Critical patent/FR2172913A1/en
Application granted granted Critical
Publication of FR2172913B1 publication Critical patent/FR2172913B1/fr
Granted legal-status Critical Current

Links

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
    • 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)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
FR7206602A 1972-02-25 1972-02-25 Synthetic corundum - from melt containing asteriating cpds by pulling from melt having crystal-forming temp only in localised Granted FR2172913A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7206602A FR2172913A1 (en) 1972-02-25 1972-02-25 Synthetic corundum - from melt containing asteriating cpds by pulling from melt having crystal-forming temp only in localised

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7206602A FR2172913A1 (en) 1972-02-25 1972-02-25 Synthetic corundum - from melt containing asteriating cpds by pulling from melt having crystal-forming temp only in localised

Publications (2)

Publication Number Publication Date
FR2172913A1 FR2172913A1 (en) 1973-10-05
FR2172913B1 true FR2172913B1 (en) 1975-10-24

Family

ID=9094197

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7206602A Granted FR2172913A1 (en) 1972-02-25 1972-02-25 Synthetic corundum - from melt containing asteriating cpds by pulling from melt having crystal-forming temp only in localised

Country Status (1)

Country Link
FR (1) FR2172913A1 (en)

Also Published As

Publication number Publication date
FR2172913A1 (en) 1973-10-05

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Legal Events

Date Code Title Description
ST Notification of lapse