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US 7,070,853 B2Granted
Layer system comprising a substrate, and an outer porous layer
AssigneeSiemens Aktiengesellschaft
InventorUwe Paul
Life of this patent
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Abstract
Coating systems according to the prior art, wherein a ceramic layer is applied to a metallic layer of the coating system, the connection between metal and ceramic often being poor. A coating system (20) according to the invention has a porous layer (4) in which a ceramic (7) is at least partly disposed, so that the connection between ceramic (7) and the metal of the porous layer (4) is improved.
Claims10
A coating system, comprising:
- a substrate;
- and
- an outer porous layer with a porosity of at least 30 percent by volume which is disposed on the substrate comprising randomly oriented metal walls surrounding and defining a plurality of pores in the layer and adapted to provide a connection path from the outer surface of the porous layer to an underside of the layer that faces the substrate, the porous layer being substantially filled with a ceramic at the interface of the porous layer and the substrate, the porous layer adapted to promote adhesion between the porous layer and the substrate.
A method for producing a coating system, compnsing:
- providing a substrate;
- disposing an outer porous layer with a porosity of at least 30 percent by volume on the substrate, the porous layer comprising randomly oriented individual metal walls surrounding and defining a plurality of pores in the layer and adapted to provide a connection path from the outer surface of the porous layer to an underside of the layer that faces the substrate;
- and
- substantially filling the porous layer with a ceramic at the interface of the porous layer and the substrate, the porous layer adapted to promote adhesion between the porous layer and the substrate.
1 more element
Dependencies are inferred from the claim text.