THE THERMAL EXPANSION OF SYNTHETIC GRAPHITES AT TEMPERATURE INTERVALS BETWEEN 80 AND 2000F | Zendy

Robert D. Allen | Zendy

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THE THERMAL EXPANSION OF SYNTHETIC GRAPHITES AT TEMPERATURE INTERVALS BETWEEN 80 AND 2000F

Author(s) -

Robert D. Allen

Publication year - 1959

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/4193187

Subject(s) - dilatometer , thermal expansion , graphite , materials science , analytical chemistry (journal) , electrical resistivity and conductivity , atmosphere (unit) , thermodynamics , composite material , chemistry , physics , chromatography , quantum mechanics

The mean linear and cubical coefficients of thermal expansion of eight commercial samples of graphite were determined for temperature intervals between 80 and 2000 deg F. The linear thermal expansion was measured with an automatic recording dilatometer using a rod-shaped specimen 2 in. long and 1/4 in. across. The specimen was heated in an atmosphere of helium. The results were in good agreement with those of Currie, Hamister, and MacPherson. The mean linear coefficient was found to increase with temperature. For the samples studied, the mean linear coefficients from 80 to 2000 deg F were 1.50 to 2.34 x 10/sup -6// deg F parallel and 2.26 to 3.45 x 10/sup -6// deg F perpendicular to the grain and were found to vary linearly with the electrical resistivity measured at 32 deg F. (auth

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