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 journalArticle

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.

Original languageEnglish (US)
Pages (from-to)35-39
Number of pages5
JournalJournal of Nuclear Materials
Volume378
Issue number1
DOIs
StatePublished - Aug 15 2008

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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