Method for producing a crack-free abradable coating with enhanced adhesion
AssigneeWalbar Inc.
InventorXinqing Ma
Life of this patent
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Abstract
The present invention provides methods for producing a crack-free abradable coating with enhanced adhesion. The methods include the steps of providing a substrate and applying an abradable material to the substrate, either directly or indirectly via one or more additional layers. A critical coating temperature of the abradable material is determined that ensures that the thermal stress level in the abradable material is lower than the tensile strength of the abradable material. The temperature of the abradable material is held at a constant temperature below the critical coating temperature throughout the step of applying the abradable material to the substrate.
Claims28
A method for producing a crack-free abradable coating, comprising:
- applying an abradable material directly or indirectly via an intermediate layer to a substrate, wherein the abradable material is maintained at a temperature that is lower than the critical coating temperature as it is being applied to the substrate or intermediate layer, thereby forming a crack-free abradable coating.
A method for producing a crack-free abradable coating, the method comprising the steps of:
- providing a substrate;
- applying a bondcoat to the substrate;
- optionally applying an intermediate layer to the bondcoat;
- and
- applying an abradable layer directly to the substrate or the intermediate layer,
- wherein the abradable material is maintained at a temperature that is lower than the critical coating temperature as it is being applied to the substrate or intermediate layer, thereby forming a crack-free abradable coating.
Dependencies are inferred from the claim text.