Abstract
Creep properties of Ni-YSZ cermet, which were for the anode of solid oxide fuel cells (SOFCs), were studied to evaluate the influence of the volume ratio of Ni in the cermet to creep properties. Specimens with three Ni volume ratios were prepared, and creep test was performed by 4 points bending configuration. The obtained creep curves showed clear tendencies in transition creep and steady-state creep regions. As Ni increased, both steady-state strain rate and the strain of transition creep increased. These results suggested that Ni in the microstructure of Ni-YSZ cermet played a certain role to determine the creep properties. However, comparison with the creep properties in Ni metal, both properties were significantly low. Hence, it was also suggested the importance of YSZ framework to creep properties.
