Effect of water vapor on static fatigue behavior of a nickel/yttria-stabilized zirconia composite
Source abstract
Abstract
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 850C, 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% H 2 O) were lower than those under a dry atmosphere. This can be explained by absorption of H 2 O 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.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advancements in Solid Oxide Fuel Cells · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Japan Fine Ceramics Center
National Institute for Materials Science
Korea Institute of Energy Research
References (17)
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