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US 2015/0175485 A1Published application
Zirconium oxide-based composite material
AssigneeCeramTec GmbH
InventorsLukas Gottwik, Meinhard Kuntz, Alessandro Alan Porporati, Juliane Ehrlich, Andreas Morhardt, Kilian Friederich
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Abstract
The invention relates to a method for producing a ceramic composite material, and a ceramic composite material which in particular is damage-tolerant.
Claims24
-16. (canceled)
A composite material comprising:
- a ceramic matrix, said ceramic matrix comprising zirconium oxide and at least one secondary phase dispersed therein, wherein the matrix composed of zirconium oxide has a proportion of at least 51 vol.-% of composite material, and that the secondary phase has a proportion of 1 to 49 vol.-% of composite material, wherein 90 to 99% of the zirconium oxide is present in the tetragonal phase based on the total zirconium oxide portion;
- and
- wherein the tetragonal phase of the zirconium oxide is stabilized by at least one member selected from the group consisting of chemical stabilization and mechanical stabilization.
Dependencies are inferred from the claim text.