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Thermal Conductivity of Zinc Oxide: From Green to Sintered State
Author(s) -
Olorunyolemi Tayo,
Birnboim Amikam,
Carmel Yuval,
Wilson Otto Carl,
Lloyd Isabel Knowlton,
Smith Stephen,
Campbell Rob
Publication year - 2002
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.1151-2916.2002.tb00253.x
Subject(s) - thermal conductivity , materials science , laser flash analysis , zinc , particle (ecology) , heat transfer , micrometer , conductivity , thermal , thermal conduction , composite material , thermal conductivity measurement , flash (photography) , nanometre , analytical chemistry (journal) , thermodynamics , metallurgy , optics , chemistry , oceanography , physics , chromatography , geology
The thermal conductivity of ZnO with different particle sizes (micrometer, submicrometer, and nanometer) was measured using the laser flash technique. As the “green” samples were heated from room temperature to 600°C (and 1000°C) and then cooled down to room temperature, the thermal conductivity was measured in situ . A model for interparticle neck growth was developed based on mass transfer to the neck region of a powder as a result of known temperature. By combining this model with a three‐dimensional numerical code, the thermal conductivity of ZnO was calculated. Excellent agreement between the theoretical calculation and experimental data was found.