Apparatus and methods of growing void-free crystalline ceramic products

A method and apparatus for eliminating voids and improving crystal quality in shaped ceramic product, e.g. sapphire fiber or silicon sheet, from a melt by using a sloped die tip. The sloped die tip or array thereof comprises an outer sidewall which is sloped outwardly at an angle of 5° to 40° from t...

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Bibliographische Detailangaben
1. Verfasser:	OUTWATER JOHN O
Format:	Patent
Sprache:	eng
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:	A method and apparatus for eliminating voids and improving crystal quality in shaped ceramic product, e.g. sapphire fiber or silicon sheet, from a melt by using a sloped die tip. The sloped die tip or array thereof comprises an outer sidewall which is sloped outwardly at an angle of 5° to 40° from the vertical.