Mtu Aero Engines Gmbh

Forschungszentrum Juelich Gmbh

Wolfgang Wachter

Andreas Jakimov

Thomas Uihlein

Manuel Hertter

Robert Vassen

Stefan Schneiderbanger

Uwe Schulz

Ralf Stolle

Detlev Stoever

Bilge Saruhan-Brings

Christian Friedrich

Gerhard Pracht

Claus-Juergen Kroeder

Herbert Fischer

A thermal barrier layer for metallic components, in particular for gas turbine components which are subject to high temperatures or hot gas, is disclosed. The thermal barrier layer includes an inner contact layer and an outer top layer, where the inner contact layer is applied to a surface of the component via an adhesion-promoting layer that is disposed therebetween, and between the outer top layer and the inner contact layer an intermediate layer is formed.

Thermal barrier layer

A heat-insulating layer system for a metallic structural component, especially for a structural component of a gas turbine such as an aircraft engine, includes an adhesion promoting layer (), an inner contact layer (), and an outer cover layer () , whereby the adhesion promoting layer (). is disposed on a surface () of the gas turbine structural component (). The inner contact layer () is formed of a zirconium oxide partially stabilized with yttrium or yttrium oxide, and the outer cover layer () is formed of a material that consists of at least one component with at least one phase, which stoichiometrically comprises 1 to 80 Mol-% MxO, 0.5 to 80 Mol-% MyO and AlOas a remainder with incidental impurities, wherein Mx is selected from the elements chromium and barium or mixtures thereof, and wherein My is selected from the alkaline earth metals, the transition metals and the rare earths or mixtures thereof.

Heat-insulating layer system

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Munich, Germany

Wolfgang Wachter