Accession Number : AD0264228

Title :   THERMAL PROPERTIES OF REFRACTORY MATERIALS

Corporate Author : ATOMICS INTERNATIONAL CANOGA PARK CALIF

Personal Author(s) : CAPE,J.A. ; TAYLOR,R.E.

Report Date : JUL 1961

Pagination or Media Count : 1

Abstract : Refinements in the transient thermal property apparatus are described. The apparatus was used to determine the thermal diffusivity of WB from about 1300 to 1600 C. The values increase from about 0.054 to 0.058. The techniques and apparatus for measuring the specific heat of brittle conductors by pulse heating are also described. Resistivity and specific heat data for uranium silicide of several compositions are reported. The resistivity and specific heat increased with increasing Si content. For uranium silicide containing 3.8% Si, the resistivity increased from 56 to 75 micro-ohm-cm between 0 and 750 C, and for uranium silicide containing 5.9% Si, the resistivity increased from 81 to 111 micro-ohmcm between 0 and 800 C. The specific heat for the 3.8% Si material is given by C sup p equals 3.16 x T + 0.0412 cal/gm-degree C from 50 to 430 C, and for the 5.8 Si material, C between 0 and 16.1 x 10 to the -6th power, T + 0.0455 cal/gm- degree C from 50 to 715 C, where T is in degree C. The thermal conductivity of Ti C was measured over the temperature region 400 to 1200 C. (Author)

Descriptors :   *HIGH TEMPERATURE, *REFRACTORY MATERIALS, BORIDES, BRITTLENESS, CARBIDES, CERAMIC MATERIALS, ELECTRICAL CONDUCTIVITY, HEAT TRANSFER, INDUCTION HEATING, MATERIALS, MEASUREMENT, OPTICAL INSTRUMENTS, PYROMETERS, ROCKET NOZZLES, SILICIDES, TEST EQUIPMENT, TEST FACILITIES, TEST METHODS, THERMAL CONDUCTIVITY, THERMODYNAMICS, TITANIUM COMPOUNDS, TUNGSTEN COMPOUNDS, URANIUM COMPOUNDS, VACUUM FURNACES, ZIRCONIUM COMPOUNDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE