Compressive creep behavior in air of a slightly porous as-sintered polycrystalline α-alumina material

摘要

Compressive creep tests in air have been performed on a polycrystalline submicron as sintered and slightly porous α-alumina material. Two different deformation mechanisms, depending on the applied stress and creep temperature, have been identified when the grain size becomes higher than a critical value 〈G *〉.