High-temperature deformation of a BaCe0.8Y0.2O3−y+Ni composite

Steady-state compressive creep experiments have been performed on a 60 vol.% BaCe0.8Y0.2O3−y/40 vol.% Ni composite in the temperature range of 1100–1370 °C at stresses of 2–150 MPa. The addition of Ni to BaCe0.8Y0.2O3−y increases the creep rate compared to BaCe0.8Y0.2O3−y without Ni. The composite creep response is modeled on the basis of hard grains (BaCe0.8Y0.2O3−y) surrounded by the soft Ni phase.