TY - JOUR
T1 - Effect of water vapor on static fatigue behavior of a nickel/yttria-stabilized zirconia composite
AU - Matsudaira, Tsuneaki
AU - Jang, Byung Koog
AU - Kim, Sun Dong
AU - Woo, Sang Kuk
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. NRF-2016M1A2A2940138).
Publisher Copyright:
© 2017 The Ceramic Society of Japan. All rights reserved.
PY - 2017/5
Y1 - 2017/5
N2 - 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.
AB - 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.
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U2 - 10.2109/jcersj2.16294
DO - 10.2109/jcersj2.16294
M3 - Review article
AN - SCOPUS:85018726581
SN - 1882-0743
VL - 125
SP - 416
EP - 418
JO - Journal of the Ceramic Society of Japan
JF - Journal of the Ceramic Society of Japan
IS - 5
ER -