HIGH TEMPERATURE RADIATION EFFECTS IN LAMPBLACK-BASED GRAPHITES

Author: Yoshikawa, H. H.
Published: United States : [publisher not identified], 1963.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1963.
Physical Description: microfiche : negative ; 8 x 13 cm

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Summary

High-temperature radiation damage in lampblack-based graphites heat treated to 3000 deg C was studied in an effort to understand the mechanism of high temperature, radiationinduced contraction in graphites. Properties measured include length change, sonic modulus, thermal conductivity, coefficient of thermal expansion, electrical resistivity, and crystallite parameters. Annealing studies at 3000 deg C after irradiation at 650 deg C demonstrated the presence of a small annealable component of radiation-induced contraction in this material. Subsequent irradiation to a maximum neutron exposure of 2600 Mwd/at. followed by annealing showed that the annealed samples display significantly higher contraction than unannealed samples. These results are consistent with suggestions that high-temperature, radiationinduced contraction in graphite is associated with stresses generated during cooling from graphitization temperatures. (auth)

Report Numbers

HW-SA-2924; CONF-73-11

Other Subject(s)

Collection

U.S. Atomic Energy Commission depository collection.

Note

DOE contract number: AT(45-1)-1350
NSA number: NSA-17-034485
OSTI Identifier 4654211
Research organization: General Electric Co. Hanford Atomic Products Operation, Richland, Wash.

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