INVESTIGATION OF ELASTIC AND THERMAL PROPERTIES OF CARBON-BASE BODIES. Period covered: May 1958 to June 1959

Technical Report · Thu Oct 01 04:00:00 EDT 1959

OSTI ID:4168027

Mrozowski, S; Andrew, J F; Juul, N; Okada, J; Strauss, H E; Wobschall, D C

In continuation of the work four basic types of carbon were prepared, namely from 1) soft filler and soft binder, 2) soft filler and hard binder, 3) hard filler and soft binder, 4) hard filler and hard binder. Elastic moduli, permanent set, shrinkage and density; electric resistivity and thermal expansion coefficient were investigated in dependence on heat treatinent temperature and also the variation of the heat conductivity and electrical resistivity on ambient temperature in the range 1200 to 3000 deg C. An apparatus for direct determination of the heat diffusivity in the temperature range 100 to 700 deg C was set up and reasonably good data for the diffusivity coefficient obtained. Studies of ultra-attenuation show that the decay in intensity of transmitted waves is due to: 1) energy losses due to hysteresis effect present for all wavelengths, 2) scatter of waves by pores, observable only when the wavelength becomes shorter than 10 particle diameters. A discussion of the merits of various types of carbons closes the report. (auth)

• Research Organization: Buffalo. Univ. Carbon and Research Lab.
• NSA Number: NSA-14-015065
• OSTI ID: 4168027
• Report Number(s): WADC-TR-58-360(Pt.II)
• Country of Publication: United States
• Language: English

Related Subjects

CARBON
CEMENTS
CERAMICS
CERMETS
DECAY
DEFORMATION
DENSITY
EFFICIENCY
ELASTICITY
ELECTRIC CONDUCTIVITY
ENERGY
EXPANSION
FREQUENCY
HEAT TRANSFER
HEAT TREATMENTS
HIGH TEMPERATURE
HYSTERESIS
LABORATORY EQUIPMENT
LOSSES
METALS, CERAMICS, AND OTHER MATERIALS
POROSITY
PREPARATION
QUANTITATIVE ANALYSIS
SCATTERING
SHRINKAGE
TEMPERATURE
THERMAL CONDUCTIVITY
THERMAL DIFFUSION
THERMODYNAMICS
THICKNESS
VARIATIONS
VOLUME
WAVE MECHANICS