論文

2017年3月

Evaluation of isotope diffusion coefficient and surface exchange coefficient of ScSZ series oxide by oxygen isotope exchange method

SOLID STATE IONICS
  • Takaaki Sakai
  • ,
  • Junji Hyodo
  • ,
  • Masako Ogushi
  • ,
  • Atsushi Inoishi
  • ,
  • Shintaro Ida
  • ,
  • Tatsumi Ishihara

301
開始ページ
156
終了ページ
162
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.ssi.2017.02.002
出版者・発行元
ELSEVIER SCIENCE BV

In this work, the Isotope diffusion coefficient (D*) and surface exchange coefficient (k*) of Sc2O3 stabilized ZrO2 (ScSZ) series oxide, 6 mol%Sc2O3-ZrO2 (6ScSZ), 10 mol% Sc2O3-ZrO2 (10ScSZ) and 10 mol%Sc2O3-1 mol% CeO2-ZrO2 (10Sc1CeSZ) were evaluated by using oxygen isotope exchange method. It was found that these ScSZ oxides showed a relatively higher D* value; 10Sc1CeSZ showed 1.1 x 10(-7) cm(2) s(-1), 10ScSZ showed 93 x 10(-8) cm(2) s(-1) and 6ScSZ showed 6.1 x 10(-8) cm(2) s(-1) at 711 degrees C, respectively. In addition, its activation energy was 1.0 eV for 10Sc1 CeSZ, 1.1 eV for 10ScSZ and 1.0 eV for 6ScSZ, respectively. The rapid change of D* due to the phase transition was also confirmed at around 600 C in the case of 10ScSZ. The surface exchange coefficient (le) of these ScSZ oxides showed a relatively high value at lower temperature. 10Sc1CeSZ showed 1.3 x 10(-8) cm s(-1) at 498 degrees C under lower vapor pressure of less than 20 Pa. (C) 2017 Elsevier B.V. All sights reserved.

Web of Science ® 被引用回数 : 4

リンク情報
DOI
https://doi.org/10.1016/j.ssi.2017.02.002
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000395840300023&DestApp=WOS_CPL
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85012222954&origin=inward

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