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Thermal Conductivity of Anisotropic Solids at High Temperatures—The Thermal Conductivity of Molded and Pyrolytic Graphites
Author(s) -
VARDI JOSEPH,
HOCH MICHAEL
Publication year - 1963
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1963.tb11695.x
Subject(s) - pyrolytic carbon , thermal conductivity , thermal conduction , materials science , anisotropy , graphite , atmospheric temperature range , composite material , conductivity , thermal conductivity measurement , analytical chemistry (journal) , thermodynamics , chemistry , pyrolysis , physics , optics , organic chemistry , chromatography
A method has been developed for the determination of the thermal conductivities of anisotropic solids under conditions of two–dimensional, steady–state heat conduction in a cylinder of finite length heated in vacuum by high–frequency induction and radiating heat to the surroundings. The method has been used to determine the radial thermal conductivity, K r , and the axial thermal conductivity, K z , of molded ZT‐type and pyrolytic graphite in the temperature range 1260° to 2200°K. For ZT‐type graphite, K z /K r =–0.101 + 2.002 × 10 −4 ± T (1260°K < T < 2200°K); for pyrolytic graphite, K z /K r = 0.0376 at 1817°K.