LIDS FOR IMPROVED DENDRITIC WEB RIBBON CRYSTAL GROWTH

Lid for a susceptor in which a crystalline material is melted by induction heating to form a pool or melt of molten material from which a dendritic web of essentially a single crystal of the material is pulled through an elongated slot 15a in the lid and the lid has a pair of generally round opening...

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Bibliographic Details
Main Authors EDGAR LEONARD KOIHKA, CHARLES, STURT DUNCAN, PAUL ANTHONY PIOTROWSKI, RAYMOND GEORGE SEIDENSTICKER
Format Patent
LanguageEnglish
Korean
Published 03.01.1996
Edition6
Subjects
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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Summary:Lid for a susceptor in which a crystalline material is melted by induction heating to form a pool or melt of molten material from which a dendritic web of essentially a single crystal of the material is pulled through an elongated slot 15a in the lid and the lid has a pair of generally round openings 17 adjacent the ends of the slot and a groove 19 extends between each opening and the end of the slot. The grooves 19 extend from the outboard surface of the lid to adjacent the inboard surface providing a strip contiguous with the inboard surface of the lid to produce generally uniform radiational heat loss across the width of the dendritic web adjacent the inboard surface of the lid to reduce thermal stresses in the web and facilitate the growth of wider webs at a greater withdrawal rate.
Bibliography:Application Number: KR19870008980