Accession Number : AD0762301

Title :   Thermophysical Properties of ATJS Graphite.

Descriptive Note : Technical rept. 1 Jan-30 Jun 72,

Corporate Author : THERMOPHYSICAL AND ELECTRONIC PROPERTIES INFORMATION ANALYSIS CENTER LAFAYETTE IN

Personal Author(s) : Taylor,Raymond E.

Report Date : OCT 1972

Pagination or Media Count : 31

Abstract : The thermal conductivity and electrical resistivity of ATJS graphite were measured from 1300 to 2550 K in the across-grain direction. This supplements earlier measurements in the with-grain direction. The use of a computer-based data acquisition system significantly increased both the accuracy and precision of the measurements. The hemispherical total emittance and normal spectral emittance (0.65 micometers) were also measured and the changes caused by oxidation were noted. It was found that both emittances increased upon oxidation. It was also noted that the normal spectral emittance increased upon long term storage. (Author)

Descriptors :   (*GRAPHITE, PHYSICAL PROPERTIES), THERMAL CONDUCTIVITY, ELECTRICAL RESISTANCE, EMISSIVITY, THERMODYNAMICS, ABLATION

Subject Categories : Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE