Turbomachine component with an erosion and corrosion resistant coating system and method for manufacturing such a component
AssigneesALSTOM Technology Ltd, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V., Rolls-Royce Deutschland Ltd & Co KG
InventorsHans-Joachim KLAM, Kai ORTNER, Bjorn ULRICHSOHN
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Abstract
A turbomachine component of a stationary turbomachine includes a substrate made of high alloyed 10% to 18% chromium steels or titanium alloys or nickel base alloys or cobalt base alloys with a substrate surface and an erosion and corrosion resistant coating system. The coating system includes a first layer, which is deposited on the substrate surface of the turbomachine component and acts as a corrosion resistant layer and a second layer. The second layer is deposited on the first layer and acts as an erosion resistant layer, wherein the first layer is a Zr single layer and the second layer is a W/WC multilayer.
Claims12
A turbomachine component of a stationary turbomachine comprising a substrate made of high alloyed 10% to 18% chromium steels or titanium alloys or nickel base alloys or cobalt base alloys with a substrate surface and an erosion and corrosion resistant coating system, the coating system comprising a first layer, which is deposited on the substrate surface of said turbomachine component and acts as a corrosion resistant layer, and further comprising a second layer, which is deposited on said first layer and acts as an erosion resistant layer, wherein said first layer is a Zr single layer and said second layer is a W/WC multilayer.
A method for manufacturing a turbomachine component, comprising:
- a) providing the component with a substrate made of high alloyed 10% to 18% chromium steels or titanium alloys or nickel base alloys or cobalt base alloys having a substrate surface;
- b) depositing on said substrate surface said first, corrosion resistant layer, wherein the layer is deposited as a Zr single layer coating and
- c) depositing on said first corrosion resistant layer said second, erosion resistant layer, wherein the layer is deposited as a W/WC multilayer coating, thereby using said first layer as a bond coat.
Dependencies are inferred from the claim text.