Layer system comprising gadolinium solid solution pyrochlore phase

摘要

Heat insulating layered systems should have a long service life in addition to excellent heat-insulating properties. Disclosed in an inventive layered system consisting of an external ceramic layer that has a mixed crystal consisting of gadolinium zirconate and gadolinium hafnate.

主权项

1. A layer system, comprising:
a substrate; an outer ceramic layer arranged on the substrate where the ceramic layer comprises a pyrochlore structure Gdv(ZrxHfy)Oz, where x+y=2; an inner ceramic layer that comprises a 6 wt %-8 wt % yttrium stabilized oxide layer arranged between the outer ceramic layer and the substrate; and wherein the inner ceramic layer has a layer thickness of between 10% and 50% of the total layer thickness of the inner ceramic layer and the outer ceramic layer, and the total layer thickness of the inner ceramic layer and the outer ceramic layer is about 300 μm to about 800 μm.