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Thermal Conductivity And Total Emissivity Measurements In The Temperature Range 1000-3000 C

Report Number: ML TDR 64-59
Author: Hoch, Michael
Corporate Author: Cincinnati Univ Ohio
Laboratory: Air Force Materials Laboratory
Date of Publication: 1964-04
Pages: 19
Contract: AF 33(616)-7123
Project: 7367
Task: 736704
AD Number: AD0601315

The ratio of thermal conductivities and of thermal conductivities to total emissivities were measured for anisotropic ZT-type graphite in the temperature range 1000-2000 C. The emissivity of a sample changes even if it is stored at room temperature for a long time. To obtain the total emissivity of a material, the ratio of specific heat to total emissivity is determined for tantalum, tungsten, molybdenum, and niobium in the temperature range 1000-2000 C. In all cases, it is found that specific heat/total emissivity is a constant, independent of temperature. This permits an easy and accurate determination of the total emissivity of any material.

Lockheed Martin Missiles & Fire Control
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