Accession Number:

AD0259849

Title:

RESEARCH IN PHYSICAL AND CHEMICAL PRINCIPLES AFFECTING HIGH TEMPERATURE MATERIALS FOR ROCKET NOZZLES

Descriptive Note:

Corporate Author:

UNION CARBIDE RESEARCH INST TARRYTOWN N Y

Personal Author(s):

Report Date:

1961-06-30

Pagination or Media Count:

1.0

Abstract:

Heats of vaporization and formation of TiB2 and the Al from AlN were measured by mass spectroscopy. An evaporation coefficient of 0.8 to 1.0 was obtained for 110 and 111 planes of Si. Absorption spectra revealed a strong doublet, apparently caused by a C3 molecule, in the matrices of C vapor in Ar. Vibration frequency studies of B2O3 are reported. Up to 2200 C there was essentially no reaction of molecular N with graphite. Above 1350 C atomic N reacts with graphite to form cyanogen. The reaction of H with graphite was studied under static and kinetic conditions. Thermal conductivities of graphite foams were measured. Mechanical properties of MgO single crystals and polycrystalline W were investigated. Powders of refractory compounds were significantly purified by vacuum heating up to 2000 C.

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE