Accession Number : AD0282047

Title :   HIGH TEMPERATURE MATERIALS DEVELOPMENT.

Descriptive Note : Monthly progress rept. no. 31 for 15 Aug 62.

Corporate Author : RAYTHEON CO WALTHAM MASS

Report Date : 15 AUG 1962

Pagination or Media Count : 8

Abstract : Further investigation is made to increase the thermal shock resistance of zirconium Pyrocarbide. Test bars of the Pyrocarbide with excess PYROGRAPHITE continue to show exceptional flexural strengths at room temperature to 1500 C. Since, at the compositions under study, the continuous phase is that of graphite, the thermal and elastic properties of this material are similar to graphite. Calculated thermal shock resistance shows a hundredfold improvement over the stoichiometric compound. Shock test bars of these coatings are being forwarded to the Atlantic Research Corporation for evaluation. (Author)

Descriptors :   *REFRACTORY MATERIALS, *CARBIDES, *GRAPHITE, *ZIRCONIUM ALLOYS, *HEAT RESISTANT ALLOYS, PRODUCTION, PYROLYSIS, MICROSTRUCTURE, MECHANICAL PROPERTIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE