Accession Number : ADA306099

Title :   Boron Filaments.

Descriptive Note : Contract rept.,

Corporate Author : ASTRO RESEARCH CORP CARPINTERIA CA

Personal Author(s) : Witucki, Robert M.

PDF Url : ADA306099

Report Date : SEP 1964

Pagination or Media Count : 21

Abstract : The combination of properties of elemental boron filaments make these unique among all other continuous filamentary materials. The presently known filament characteristics indicate great potential for many special applications pertaining to space flight, as well as for the development of new composite materials. The properties of particular interest include the very high modulus of elasticity, about 55 x 10(exp 6) psi, the high melting temperature, about 2040 deg C, the low density, about 2.35 g/cc, and the considerable retention of strength at temperatures to 1000 deg C. Although present strength-to-weight ratio for boron filaments is similar to that for glass filaments there is real potential for increasing the boron filament strength significantly. jg p5

Descriptors :   *FILAMENTS, *BORON, MATERIALS, COMPOSITE MATERIALS, HIGH TEMPERATURE, ELASTIC PROPERTIES, GLASS, STRENGTH(MECHANICS), MELTING, LOW DENSITY, SPACE FLIGHT, STRENGTH WEIGHT RATIO.

Subject Categories : Inorganic Chemistry
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Distribution Statement : APPROVED FOR PUBLIC RELEASE