FR2322635A1 - PROCESS FOR THE PRODUCTION OF HIGH PERFECTION CRYSTALS FROM A MASS OF MELTED SUBSTANCE FREE OF CONVECTION - Google Patents

PROCESS FOR THE PRODUCTION OF HIGH PERFECTION CRYSTALS FROM A MASS OF MELTED SUBSTANCE FREE OF CONVECTION

Info

Publication number
FR2322635A1
FR2322635A1 FR7400625A FR7400625A FR2322635A1 FR 2322635 A1 FR2322635 A1 FR 2322635A1 FR 7400625 A FR7400625 A FR 7400625A FR 7400625 A FR7400625 A FR 7400625A FR 2322635 A1 FR2322635 A1 FR 2322635A1
Authority
FR
France
Prior art keywords
convection
crystals
mass
production
melted substance
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.)
Withdrawn
Application number
FR7400625A
Other languages
French (fr)
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.)
Ernst Leitz Wetzlar GmbH
Original Assignee
Ernst Leitz Wetzlar GmbH
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 Ernst Leitz Wetzlar GmbH filed Critical Ernst Leitz Wetzlar GmbH
Publication of FR2322635A1 publication Critical patent/FR2322635A1/en
Withdrawn legal-status Critical Current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
    • C30B27/00—Single-crystal growth under a protective fluid
    • 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
    • C30B15/14—Heating of the melt or the crystallised materials
    • 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
    • C30B17/00—Single-crystal growth onto a seed which remains in the melt during growth, e.g. Nacken-Kyropoulos 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
    • C30B29/54—Organic compounds
    • 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
    • C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
    • 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
    • C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
    • C30B7/14—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions the crystallising materials being formed by chemical reactions in the solution

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
FR7400625A 1973-01-10 1974-01-08 PROCESS FOR THE PRODUCTION OF HIGH PERFECTION CRYSTALS FROM A MASS OF MELTED SUBSTANCE FREE OF CONVECTION Withdrawn FR2322635A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2300989A DE2300989A1 (en) 1973-01-10 1973-01-10 PROCESS FOR GROWING CRYSTALS OF HIGH PERFECTION FROM CONVECTION-FREE MELT SUBSTANCE

Publications (1)

Publication Number Publication Date
FR2322635A1 true FR2322635A1 (en) 1977-04-01

Family

ID=5868653

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7400625A Withdrawn FR2322635A1 (en) 1973-01-10 1974-01-08 PROCESS FOR THE PRODUCTION OF HIGH PERFECTION CRYSTALS FROM A MASS OF MELTED SUBSTANCE FREE OF CONVECTION

Country Status (6)

Country Link
JP (1) JPS4998784A (en)
CH (1) CH567870A5 (en)
DE (1) DE2300989A1 (en)
FR (1) FR2322635A1 (en)
GB (1) GB1427501A (en)
NL (1) NL7317718A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT382900B (en) * 1982-03-30 1987-04-27 Knischka Rubine Gmbh GRADIENT METHOD FOR GROWING CRYSTALS FROM LIQUID MEDIA
FR2549751A1 (en) * 1983-07-29 1985-02-01 Commissariat Energie Atomique PROCESS FOR PRODUCING A MATERIAL BY MOLDING
FR2549744B1 (en) * 1983-07-29 1985-09-20 Commissariat Energie Atomique PROCESS FOR THE PREPARATION OF THIN OR MASSIVE METAL OR SEMI-METAL FORMS, ESPECIALLY SILICON
US5084206A (en) * 1990-02-02 1992-01-28 E. I. Du Pont De Nemours And Company Doped crystalline compositions and a method for preparation thereof

Also Published As

Publication number Publication date
GB1427501A (en) 1976-03-10
DE2300989A1 (en) 1974-07-11
CH567870A5 (en) 1975-10-15
NL7317718A (en) 1974-07-12
JPS4998784A (en) 1974-09-18

Similar Documents

Publication Publication Date Title
FR2336370A1 (en) PROCESS FOR THE CONTINUOUS PRODUCTION OF HIGH PURITY TEREPHTHALIC ACID
IT1006792B (en) METHOD FOR THE PRODUCTION OF FILAMENTATION MATERIAL DIRECTLY FROM MELTED MATERIAL
BE754666A (en) METHOD AND DEVICE FOR THE PRODUCTION OF PELLETS FROM MELTED MASS
BE811865A (en) HIGH PURITY AROMATIC PRODUCTION PROCESS FROM OIL CUTS
BE783429A (en) PROCESS FOR THE PRODUCTION OF HIGH PURE NICKEL FROM MATTESNICKELIFERES
BE822717A (en) PROCESS FOR THE PRODUCTION OF CALCIUM HYDROCHLORITE
FR2331605A1 (en) PROCESS FOR THE PRODUCTION OF A COLORING SUBSTANCE BY EXTRACTION OF SUNFLOWER SEEDS
FR2322635A1 (en) PROCESS FOR THE PRODUCTION OF HIGH PERFECTION CRYSTALS FROM A MASS OF MELTED SUBSTANCE FREE OF CONVECTION
FR2305487A1 (en) PROCESS FOR THE PRODUCTION OF VERY HIGH PURITY AROMATICS
BE789554A (en) SYSTEM FOR REGULATING THE GROWTH OF A CRYSTAL BY DRAWING FROM A MELTED MASS, PROCESS FOR PRODUCING CRYSTALS BY MEANS OF THIS SYSTEM OF REGULATION AND CRYSTALS THUS OBTAINED
RO68951A (en) PROCESS FOR THE PREPARATION OF THE NEW 8-OXYQUINOLIN-METAL-DIMETHYLDITHIOCARBAMATE COMPOUNDS
FR2291567A1 (en) PROCESS FOR FORMING IMAGES BY LIQUID CRYSTALS
BE807828R (en) PROCESS FOR THE PRODUCTION OF HIGH PURE NICKEL FROM NICKEL-MATT
IT1029989B (en) CRYSTALLIZATION PROCESS FOR THE PRODUCTION OF HIGH PURITY PARAXYLENE
BE844167A (en) CONTINUOUS CRYSTALLIZATION PROCESS FOR THE PREPARATION OF SODIUM PEROXYCARBONATE 2NA2C03.3H202
BE827325A (en) IMPROVED PROCESS FOR THE PREPARATION OF HIGH PURITY AZOIC COMPOUNDS
CH511215A (en) Process for the preparation of adiponitrile
BE783430A (en) PROCESS FOR THE PRODUCTION OF HIGH PURE NICKEL FROM SULPHIDE CONCENTRATES
RO64595A (en) PROCESS FOR THE PREPARATION OF 3-HALOGEN-CEPHALOSPORINS E-CEPHALO SPORINS COMPOUNDS
BE820436A (en) MONITORING DEVICE FOR A CRYSTAL DRAWING PLANT FROM A MELTED MASS
BE780203A (en) PROCESS FOR THE PREPARATION OF ARTICLES SHAPED FROM COAL
BE833883A (en) PROCESS FOR THE PRODUCTION OF BEET SUGAR
BE818472A (en) PROCESS FOR THE PRODUCTION OF HIGH PURE LITHIUM HEXAFLUOROARSENIATE
BE807674R (en) MELTING PROCESS BY ZONE WITHOUT CRUCIBLE OF A SEMICONDUCTOR BAR
BE820128A (en) PROCESS FOR THE PREPARATION OF PHOSPHORUS COMPOUNDS

Legal Events

Date Code Title Description
ST Notification of lapse