DE1907374

1,208,243. Pulling crystals. UNION CARBIDE CORP. 14 Feb., 1969 [15 Feb., 1968], No. 8024/69. Heading BIS. [Also in Division Cl] A single crystal of alumina oriented as shown is pulled from a melt in an induction heated rectangular crucible 16 having a lid 24 with a rectangular opening 25 surrounded...

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Bibliographische Detailangaben
1. Verfasser:	KEIG, GEORGE ANTHONY, EL CAJON, CALIF. (V.ST.A.)
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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Zusammenfassung:	1,208,243. Pulling crystals. UNION CARBIDE CORP. 14 Feb., 1969 [15 Feb., 1968], No. 8024/69. Heading BIS. [Also in Division Cl] A single crystal of alumina oriented as shown is pulled from a melt in an induction heated rectangular crucible 16 having a lid 24 with a rectangular opening 25 surrounded by overhanging hemi-cylindrical ducts 27 connected to suction pipes 36 and 37. The melt flows up each side of the crucible, across to a melting line 38, and down again.