Appliance for pulling a single crystal from a melt on a seed crystal

The appliance contains a sealed chamber (1) which accommodates a crucible (3) which is kinematically linked to a drive for rotating it, a thermally insulated heater (4) which surrounds the crucible, and a seed crystal (8) holder (7) rod (6) arranged coaxially with the crucible. According to the inve...

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Bibliographische Detailangaben
Hauptverfasser:	GRIGORY GRIGORIEVICH MAKARENKO, OLEG SERGEEVICH MJULENDORF, ALEXEI VIKTOROVICH RADKEVICH, ANATOLY ILLARIONOVICH KIRICHENKO, OLEG VIKTOROVICH PELEVIN, VALENTIN IVANOVICH GORILETSKY, VITALY YAKOVLEVICH APILAT, ANATOLY MIKHAILOVICH SOKOLOV, LEV GEORGIEVICH EIDELMAN
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CHEMISTRY CRYSTAL GROWTH METALLURGY PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	The appliance contains a sealed chamber (1) which accommodates a crucible (3) which is kinematically linked to a drive for rotating it, a thermally insulated heater (4) which surrounds the crucible, and a seed crystal (8) holder (7) rod (6) arranged coaxially with the crucible. According to the invention, the kinematic link between the crucible and the drive for rotating it contains a supporting ring (9) on which the crucible (3) is fastened for the purpose of co-rotating them while the single crystal (37) is pulled. The proposed invention ensures unhindered heat supply from the heater to the entire crucible surface, prevents any unwanted temperature drop from the perimeter to the centre of the crucible bottom, and permits the formation in the melt of a thermal field predefined at will.