Accession Number : AD0601315

Title :   THERMAL CONDUCTIVITY AND TOTAL EMISSIVITY MEASUREMENTS IN THE TEMPERATURE RANGE 1000-3000 C.

Descriptive Note : Rept. for Dec 62-Feb 64,

Corporate Author : CINCINNATI UNIV OHIO

Personal Author(s) : Hoch,Michael

Report Date : APR 1964

Pagination or Media Count : 19

Abstract : 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. (Author)

Descriptors :   (*GRAPHITE, THERMAL PROPERTIES), (*REFRACTORY METALS, THERMAL PROPERTIES), TANTALUM, TUNGSTEN, MOLYBDENUM, NIOBIUM, THERMODYNAMICS, SPECIFIC HEAT, EMISSIVITY, THERMAL CONDUCTIVITY, MEASUREMENT

Distribution Statement : APPROVED FOR PUBLIC RELEASE