論文

査読有り
2014年11月

An Evaluation of the Thermophysical Properties of Stoichiometric CeO2 in Comparison to UO2 and PuO2

JOURNAL OF THE AMERICAN CERAMIC SOCIETY
  • Andrew T. Nelson
  • ,
  • Dylan R. Rittman
  • ,
  • Joshua T. White
  • ,
  • John T. Dunwoody
  • ,
  • Masato Kato
  • ,
  • Kenneth J. McClellan

97
11
開始ページ
3652
終了ページ
3659
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1111/jace.13170
出版者・発行元
WILEY-BLACKWELL

The thermal conductivity of stoichiometric CeO2 was determined through measurement of thermal expansion from 313 to 1723 K, thermal diffusivity from 298 to 1473 K, and specific heat capacity from 313 to 1373 K. The thermal conductivity was then calculated as the product of the density, thermal diffusivity, and specific heat capacity. The thermal conductivity was found to obey an (A + BT)(-1) relationship with A = 6.776x10(-2) m center dot K center dot W-1 and B = 2.793 x 10(-4) m center dot W-1. Extrapolations of applied models were made to provide suggested data for the specific heat capacity, thermal diffusivity, and thermal conductivity data up to 1723 K. Results of thermal expansion and heat capacity measurements agreed well with the limited low-temperature data available in the literature. The thermal conductivity values provided in the current study are significantly higher than the only high-temperature data located for CeO2. This is attributed to the tendency of CeO2 to rapidly reduce at elevated temperatures given the available partial pressure of O-2 in air at ambient pressure. The CeO2 data are compared to literature values for UO2 and PuO2 to evaluate its suitability as a surrogate in nuclear fuel systems where thermal transport is a primary criterion for performance

リンク情報
DOI
https://doi.org/10.1111/jace.13170
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000344779900049&DestApp=WOS_CPL
ID情報
  • DOI : 10.1111/jace.13170
  • ISSN : 0002-7820
  • eISSN : 1551-2916
  • Web of Science ID : WOS:000344779900049

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