Thermal conductivity mapping of pyrolytic carbon and silicon carbide coatings on simulated fuel particles by time-domain thermoreflectance

E. López-Honorato, C. Chiritescu, P. Xiao, David G. Cahill, G. Marsh, T. J. Abram

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Thermal conductivity of pyrolytic carbon and silicon carbide coatings on spherical particles has been mapped using time-domain thermoreflectance. The thermal conductivities measured for pyrolytic carbon ranged between 3.4 and 13.5 W/m K. The effect of porosity, pore-size distribution, anisotropy, in-plane disorder and domain sizes is discussed. A thermal conductivity of 168 W/m K was obtained for SiC. Mapping of the thermal conductivity of coated fuel particles provides useful data for modeling fuel performance during the operation of nuclear reactors. © 2008 Elsevier B.V. All rights reserved.
    Original languageEnglish
    Pages (from-to)35-39
    Number of pages4
    JournalJournal of Nuclear Materials
    Volume378
    Issue number1
    DOIs
    Publication statusPublished - 15 Aug 2008

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