| abstract |
Provided is a composite ceramic laminate in which a substrate is coated with a composite ceramic including a nitride phase, and an oxide phase which has an elastic modulus that differs by 10% or more from the elastic modulus of the nitride phase. The composite ceramic has: a first phase which is the phase occupying the greatest area fraction among the nitride phase and the oxide phase; and a toughening phase which occupies an area fraction of 1% or more, and has an elastic modulus that differs the most from the elastic modulus of the first phase. When the first phase is the nitride phase, the toughening phase is the oxide phase, and when the first phase is the oxide phase, the toughening phase is the nitride phase. |