A steady-state high-temperature method for measuring thermal conductivity of refractory materials

A new methodology and an instrumental setup for the thermal conductivity estimation of isotropic bulk graphite and different carbides at high temperatures are presented. The method proposed in this work is based on the direct measurement of temperature and emissivity on the top surface of a sample d...

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Bibliographic Details
Published in:Review of scientific instruments 2013-05, Vol.84 (5), p.054902-054902
Main Authors: Manzolaro, M., Corradetti, S., Andrighetto, A., Ferrari, L.
Format: Article
Language:English
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Summary:A new methodology and an instrumental setup for the thermal conductivity estimation of isotropic bulk graphite and different carbides at high temperatures are presented. The method proposed in this work is based on the direct measurement of temperature and emissivity on the top surface of a sample disc of known dimensions. Temperatures measured under steady-state thermal equilibrium are then used to estimate the thermal conductivity of the sample by making use of the inverse parameter estimation technique. Thermal conductivity values obtained in this way are then compared to the material data sheets and values found in literature. The reported work has been developed within the Research and Development framework of the SPES (Selective Production of Exotic Species) project at INFN-LNL (Istituto Nazionale di Fisica Nucleare – Laboratori Nazionali di Legnaro).
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4804258