Accession Number : AD0815021

Title :   INVESTIGATION OF A VERY HIGH TEMPERATURE PYROLYTIC GRAPHITE THERMOCOUPLE.

Descriptive Note : Final rept.,

Corporate Author : SPACE AGE MATERIALS CORP WOODSIDE NY

Personal Author(s) : Robba, William A.

Report Date : 13 FEB 1967

Pagination or Media Count : 76

Abstract : A series of tests have been performed to generate fundamental experimental data on the thermoelectric properties of anisotropic pyrolytic graphite. The purpose of this effort was to develop a thermocouple with a temperature range of 3300 C (6000 F) for long periods of time with a low duty cycle capability of 3600 C (6500 F). A number of test thermocouples of pure pyrolytic graphite were developed with various junction geometrics. Calibration of this assembly was effected by utilizing an optical pyrometer sighted into a blackbody cavity in which the thermocouple was embedded. While several difficulties were encountered, some success in overcoming these was attained and suggestions for solutions to the remaining problems are discussed.

Descriptors :   (*THERMOCOUPLES, PYROLYTIC GRAPHITE), RELIABILITY, THERMOELECTRICITY, HIGH TEMPERATURE, SEEBECK EFFECT, VACUUM FURNACES, CALIBRATION.

Subject Categories : Non-electrical Energy Conversion

Distribution Statement : APPROVED FOR PUBLIC RELEASE