Thermal conductivity of high temperature ceramic thermal insulations

T. Litovsky*, R. Cytermann, E. Litovsky, M. Shapiro, A. Shavit

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

Experimental data on thermal conductivity λ(T) of insulating materials based on Al O and MgO, collected at 400-2000K are presented. In a study, thermal conductivity of the insulation were measured by the method of monotonous heating of plate samples. Observed nonmonotonic thermal conductivity dependences on temperature, porosity, and the sizes of particles and pores were analyzed on the basis of a theoretical model. It was demonstrated that particles/pores of sizes 1-3 μm promote large scattering of heat radiation, thus, significantly diminish the increase of the material's effective thermal conductivity at high temperatures.

Original languageEnglish
Pages (from-to)309-314
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Volume371
StatePublished - 1995
Externally publishedYes
EventProceedings of the 1994 MRS Fall Meeting - Boston, MA, USA
Duration: 28 Nov 199430 Nov 1994

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