Effect of water vapor on static fatigue behavior of a nickel/yttria-stabilized zirconia composite

Tsuneaki Matsudaira, Byung Koog Jang, Sun Dong Kim, Sang Kuk Woo

研究成果: Contribution to journalReview article

抜粋

The effect of water vapor on the mechanical properties of a porous nickel/yttria-stabilized zirconia (NiYSZ) composite (volume ratio of Ni:YSZ = 40:60) was evaluated at 850°C, a typical operating temperature of a reversible solid oxide cell. Both the flexural strength and static fatigue limit of NiYSZ obtained from the static fatigue lifetime under a wet atmosphere (containing 4% H2O) were lower than those under a dry atmosphere. This can be explained by absorption of H2O molecules into YSZ particles, resulting in accelerated crack growth. The fatigue limit of NiYSZ was confirmed to be extremely low, corresponding to almost one-third of the flexural strength.

元の言語英語
ページ(範囲)416-418
ページ数3
ジャーナルJournal of the Ceramic Society of Japan
125
発行部数5
DOI
出版物ステータス出版済み - 5 2017
外部発表Yes

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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