Growth of Large Monocrystals of Al2O3 by a Gradient Furnace Technique.

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Abstract:

A new technique, a gradient furnace technique, has been developed for the high-temperature growth of large monocrystals of Al2O3 from the melt. The technique employs a vacuum graphite resistance furnace with a helium-cooled tungstenmolybdenum heat exchanger protruding into it. Author

Author(s):
Viechnicki, Dennis J. ; Schmid, Frederick
Author Organization(s):
ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS
Descriptive Note:
Technical rept.,
Pagination:
0010

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AMMRC-TR-71-56
Project Number(s):
DA-1-T-062105-A-330
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*CRYSTAL GROWTH, *SAPPHIRE, DISLOCATIONS, IMPURITIES, INFRARED WINDOWS, ALUMINATES
Field(s)/Group(s):
Manufacturing and Industrial Engineering and Control of Production Systems, Crystallography
Keyword(s):
ALUMINA, FURNACES, GRADIENTS
Report Date:
1971 Dec 01