MM&T Manufacturing Methods for Gradient Furnace Processing of Ceramic Armor and Structural Ceramics

reportActive / Technical Report | Accession Number: ADA092667 | Open PDF

Abstract:

The growth of large single crystal materials opens up many possibilities for new applications of ceramics, such as in the case of transparent armor, lasers, and laser windows. Single crystals of sapphire have been made by many techniques, the best known probably being the Verneuil method for the production of jewels and bearings. Until recently, the largest crystals of sapphire were probably those obtained by the Czochralski technique where crystals up to three inches in diameter were grown. At the Army Materials and Mechanics Research Center AMMRC a coordinated in-house effort has been underway to develop an improved approach to the growth of large uniform single crystals of sapphire. The main effort centered about a research and development project on the gradient furnace synthesis of advanced ceramics.

Author(s):
Delai, A. J. ; Gazzara, Charles P.
Author Organization(s):
ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MA
Descriptive Note:
Final rept. 10 Oct 1972-30 Jun 1975
Pagination:
0029

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AMMRC-TR-80-37, USAAVRADCOM-TR-80-F-4
Monitor Series:
TR-80-F-4, USAAVRADCOM
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_4.6_Engineering; JCA_5.2_Understand; JCA_4.6.1_General Engineering; JCA_5.3.3_Develop Strategy; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action; JCA_1.1.1_Global Force Management; JCA_1.1_Force Management; JCA_1_Force Support
Modernization Areas:
Microelectronics; Space; Autonomy
Communities of Interest:
Advanced Electronics
Descriptor(s):
*ARMOR, *CERAMIC MATERIALS, *CRYSTAL GROWTH, *FABRICATION, *SAPPHIRE, ALUMINUM OXIDES, COOLING, CRUCIBLES, CRYSTALLIZATION, CRYSTALS, HELIUM, INFRARED SPECTROSCOPY, LASERS, MELTS, POLISHING, PURITY, RECIRCULATION, SOLIDIFICATION, SURFACE FINISHING, TEMPERATURE GRADIENTS, TEST METHODS, TRANSPARENCE, VACUUM FURNACES, X RAY PHOTOGRAPHY
Field(s)/Group(s):
Ceramics, Refractories and Glass, Armor, Crystallography
Keyword(s):
MMTE(MANUFACTURING METHODS AND TECHNOLOGY)
Report Date:
1980 Aug 01