FR2359639A2 - Dispositif pour fabriquer des tubes et des ensembles de petits cylindres monocristallins - Google Patents

Dispositif pour fabriquer des tubes et des ensembles de petits cylindres monocristallins

Info

Publication number
FR2359639A2
FR2359639A2 FR7622863A FR7622863A FR2359639A2 FR 2359639 A2 FR2359639 A2 FR 2359639A2 FR 7622863 A FR7622863 A FR 7622863A FR 7622863 A FR7622863 A FR 7622863A FR 2359639 A2 FR2359639 A2 FR 2359639A2
Authority
FR
France
Prior art keywords
seed crystal
prodn
direct
al2o3
doped
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
FR7622863A
Other languages
English (en)
Other versions
FR2359639B2 (fr
Inventor
Jean Ricard
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.)
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
Original Assignee
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
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 Produits Chimiques Ugine Kuhlmann, Ugine Kuhlmann SA filed Critical Produits Chimiques Ugine Kuhlmann
Priority to FR7622863A priority Critical patent/FR2359639A2/fr
Priority to DE19762635373 priority patent/DE2635373C2/de
Priority to IT6898476A priority patent/IT1069679B/it
Priority to CH1013876A priority patent/CH612596A5/xx
Priority to JP9407376A priority patent/JPS5242479A/ja
Priority to GB3310076A priority patent/GB1546843A/en
Publication of FR2359639A2 publication Critical patent/FR2359639A2/fr
Application granted granted Critical
Publication of FR2359639B2 publication Critical patent/FR2359639B2/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
    • C30B15/08—Downward pulling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

Dispositif pour fabriquer des tubes et des ensembles de petits cylindres monocristallins par la méthode de la goutte pendante caractérisé par le fait que le creuset dans lequel est placée la matière servant à fabriquer le monocristal a un fond conique percé de filières capillaires cylindriques ayant un axe est parallèle à celui du creuset et disposées selon un cercle centré sur l'axe du creuset Les tubes monocristallins trouvent une application dans les lampes au sodium et la circulation de liquides corrosifs ainsi que de liquides biologiques.
FR7622863A 1975-08-08 1976-07-27 Dispositif pour fabriquer des tubes et des ensembles de petits cylindres monocristallins Granted FR2359639A2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR7622863A FR2359639A2 (fr) 1976-07-27 1976-07-27 Dispositif pour fabriquer des tubes et des ensembles de petits cylindres monocristallins
DE19762635373 DE2635373C2 (de) 1975-08-08 1976-08-06 Verfahren und Vorrichtung zur kontinuierlichen Züchtung von Einkristallen bestimmter Form
IT6898476A IT1069679B (it) 1975-08-08 1976-08-09 Procedimento e dispositivo per la produzione di monocristalli preformati
CH1013876A CH612596A5 (en) 1975-08-08 1976-08-09 Process for continuous manufacture of preformed single crystals and device for its use
JP9407376A JPS5242479A (en) 1975-08-08 1976-08-09 Continuous fabrication of determineddform single crystals and apparatus therefor
GB3310076A GB1546843A (en) 1975-08-08 1976-08-09 Process for the continuous preparation of preformed monocrystals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7622863A FR2359639A2 (fr) 1976-07-27 1976-07-27 Dispositif pour fabriquer des tubes et des ensembles de petits cylindres monocristallins

Publications (2)

Publication Number Publication Date
FR2359639A2 true FR2359639A2 (fr) 1978-02-24
FR2359639B2 FR2359639B2 (fr) 1981-04-30

Family

ID=9176198

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7622863A Granted FR2359639A2 (fr) 1975-08-08 1976-07-27 Dispositif pour fabriquer des tubes et des ensembles de petits cylindres monocristallins

Country Status (1)

Country Link
FR (1) FR2359639A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495155A (en) * 1982-06-11 1985-01-22 Circeram Modified crucible for the pendant drop method of crystallization
EP1666644A1 (fr) * 2003-07-17 2006-06-07 Stella Chemifa Kabushiki Kaisha Procede d'obtention d'un cristal de fluorure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495155A (en) * 1982-06-11 1985-01-22 Circeram Modified crucible for the pendant drop method of crystallization
EP1666644A1 (fr) * 2003-07-17 2006-06-07 Stella Chemifa Kabushiki Kaisha Procede d'obtention d'un cristal de fluorure
EP1666644A4 (fr) * 2003-07-17 2009-05-20 Stella Chemifa Kk Procede d'obtention d'un cristal de fluorure

Also Published As

Publication number Publication date
FR2359639B2 (fr) 1981-04-30

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Legal Events

Date Code Title Description
TP Transmission of property