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

• MATSUDAIRA Tsuneaki

  Japan Fine Ceramics Center

• JANG Byung-Koog

  National Institute for Materials Science

• KIM Sun-Dong

  Korea Institute of Energy Research

• WOO Sang-Kuk

  Korea Institute of Energy Research

抄録

The effect of water vapor on the mechanical properties of a porous nickel/yttria-stabilized zirconia (Ni–YSZ) 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 Ni–YSZ 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 Ni–YSZ was confirmed to be extremely low, corresponding to almost one-third of the flexural strength.

収録刊行物

• Journal of the Ceramic Society of Japan

  Journal of the Ceramic Society of Japan 125 (5), 416-418, 2017

  公益社団法人 日本セラミックス協会

キーワード

• Reversible solid oxide cell
• Ni–YSZ
• Water vapor
• Flexural strength
• Static fatigue
• Fatigue limit

詳細情報

• CRID: 1390001205287145216
• NII論文ID: 130005632197
• DOI: 10.2109/jcersj2.16294
• ISSN: 13486535
• ISSN: 18820743
• Web Site: https://www.jstage.jst.go.jp/article/jcersj2/125/5/125_16294/_pdf
• 本文言語コード: en
• データソース種別:
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