[HTML][HTML] Thermal conductivity of magnesium oxide from absolute, steady-state measurements

AJ Slifka, BJ Filla, JM Phelps - Journal of research of the National …, 1998 - ncbi.nlm.nih.gov
AJ Slifka, BJ Filla, JM Phelps
Journal of research of the National Institute of Standards and Technology, 1998ncbi.nlm.nih.gov
The thermal conductivity of polycrystalline magnesium oxide has been measured over the
temperature range from 400 K to 1300 K using a modified guarded-hot-plate design. Three
different thicknesses of specimens having 93% of theoretical density were tested to verify the
operation, accuracy, and reproducibility of our apparatus. The measured thermal
conductivity ranges from 30 W· m− 1· K− 1 down to 8 W· m− 1· K− 1 and has an inverse-
temperature functionality. The results agree well with literature values for this material.
Abstract
The thermal conductivity of polycrystalline magnesium oxide has been measured over the temperature range from 400 K to 1300 K using a modified guarded-hot-plate design. Three different thicknesses of specimens having 93% of theoretical density were tested to verify the operation, accuracy, and reproducibility of our apparatus. The measured thermal conductivity ranges from 30 W· m− 1· K− 1 down to 8 W· m− 1· K− 1 and has an inverse-temperature functionality. The results agree well with literature values for this material.
ncbi.nlm.nih.gov
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