Low Temperature Thermal and Electrical Conductivity and Thermoelectric Power of Graphite

Technical Report · Sat Jan 01 04:00:00 EST 1955

DOI:https://doi.org/10.2172/4397554· OSTI ID:4397554

Rasor, Ned S. ^[1]

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1. North American Aviation, Inc., Downey, CA (United States)

The thermal and electrical conductivity and the thermoelectric power of a natural graphite and several artificial graphite types have been measured from near the liquid-helium point to room temperature. The thermal conductivity was measured by a "self-heating" (Kohlrausch) method which permitted the use of small samples. The thermal conductivity was found to vary as the 2.7 power of the temperature in the low-temperature region. There appeared to be no correlation between the particle size and the temperature dependence in the low-temperature region, but there was evidence for a smaller dependence on temperature with a decrease in the degree of graphitization. The thermoelectric power at a given temperature was found to increase with a decrease in particle size.

• Research Organization: North American Aviation, Inc., Downey, CA (United States)
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• DOE Contract Number: AT(11-1)-GEN-8
• NSA Number: NSA-09-001478
• OSTI ID: 4397554
• Report Number(s): NAA-SR--1061
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
CHEMICAL REACTIONS
ELECTRIC CONDUCTIVITY
GRAIN SIZE
GRAPHITE
HEATING
LOW TEMPERATURE
MEASURED VALUES
PRODUCTION
TEMPERATURE
THERMAL CONDUCTIVITY
THERMOELECTRICITY