Abstract: Provided is a composite ceramic layered body, including: a substrate; and a composite ceramic that coats the substrate, the composite ceramic including a nitride phase and an oxide phase having an elastic modulus that differs from an elastic modulus of the nitride phase by 10% or more. The composite ceramic includes, among the nitride phase and the oxide phase, a first phase that occupies a largest area ratio, and a toughening phase that occupies an area ratio of 1% or more and has a largest difference in elastic modulus from an elastic modulus of the first phase. In a case in which the first phase is the nitride phase, the toughening phase is the oxide phase, and in a case in which the first phase is the oxide phase, the toughening phase is the nitride phase.

Abstract: The present invention provides a ceramic laminate having excellent mechanical properties, heat dissipation property, insulating property, heat resistance and anti-reactivity, and particularly an insulative heat dissipating body having an excellent thermal cycle reliability and a high withstand voltage. The ceramic laminate 1 according to the present invention is a ceramic laminate in which a ceramic film 3 is formed on a metal layer 2, wherein the ceramic film 3 has a minimum film thickness of 1 ?m or more, contains silicon nitride and inevitable impurities, and has silicon nitride crystal grains having an average grain size of 300 nm or less in the film thickness direction and an average grain size of 500 nm or less in the in-plane direction.

Abstract: A ceramic laminate improving the mechanical characteristics of a composite ceramic layer which has excellent thermal fatigue resistance, thermal conductivity, and insulation ability and having excellent durability and heat dissipation and insulation ability and a ceramic insulating substrate and a method of production of a ceramic laminate are provided. In a cross-section perpendicular to the bonding interfaces, the average size of the second phase particles 3 is 0.02 ?m to 0.3 ?m and the average value of the ratio of the long axis and short axis of an equivalent ellipse when viewing a second phase particle 3 as an ellipse is 2 to 10. Further, 60% or more of the number of the second phase particles 3 has an orientation angle of 30° or less while the average orientation angle is 5° to 35°.

Abstract: A ceramic laminate improving the mechanical characteristics of a composite ceramic layer which has excellent thermal fatigue resistance, thermal conductivity, and insulation ability and having excellent durability and heat dissipation and insulation ability and a ceramic insulating substrate and a method of production of a ceramic laminate are provided. In a cross-section perpendicular to the bonding interfaces, the average size of the second phase particles 3 is 0.02 ?m to 0.3 ?m and the average value of the ratio of the long axis and short axis of an equivalent ellipse when viewing a second phase particle 3 as an ellipse is 2 to 10. Further, 60% or more of the number of the second phase particles 3 has an orientation angle of 30° or less while the average orientation angle is 5° to 35°.

Abstract: The present invention provides a ceramic laminate having excellent mechanical properties, heat dissipation property, insulating property, heat resistance and anti-reactivity, and particularly an insulative heat dissipating body having an excellent thermal cycle reliability and a high withstand voltage. The ceramic laminate 1 according to the present invention is a ceramic laminate in which a ceramic film 3 is formed on a metal layer 2, wherein the ceramic film 3 has a minimum film thickness of 1 ?m or more, contains silicon nitride and inevitable impurities, and has silicon nitride crystal grains having an average grain size of 300 nm or less in the film thickness direction and an average grain size of 500 nm or less in the in-plane direction.