Techniques for depositing coating on ceramic substrate
AssigneeROLLS-ROYCE plc
InventorsSubhash K. Naik, Raymond J. Sinatra
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Abstract
A method of coating a substrate, the method including depositing mullite on the substrate during a first time period via thermal spraying to form a first layer, the mullite comprising mullite powder formed via at least one of a fused plus crush or sinter plus crush process; and depositing a second material on the first layer to form a second layer, wherein the substrate is at a temperature less than approximately 50 degrees Celsius at approximately a beginning of the first time period. In some embodiments, the method may further include depositing silicon to form a silicon bond layer between the substrate and mullite layer.
Claims20
A method of coating a substrate, the method comprising:
- depositing mullite on the substrate during a first time period via thermal spraying to form a first layer, the mullite comprising mullite powder formed via at least one of a fused plus crush or sinter plus crush process;
- and
- depositing a second material on the first layer to form a second layer,
- wherein the substrate is at a temperature less than approximately 50 degrees Celsius at approximately a beginning of the first time period.
A method of coating a substrate, the method comprising:
- depositing silicon on the substrate to form a silicon layer;
- heat treating the silicon layer;
- and
- depositing mullite on the silicon layer via thermal spraying to form a first layer subsequent to the heat treatment of the silicon layer, the mullite comprising mullite powder formed via at least one of a fused plus crush or sinter plus crush process.
Dependencies are inferred from the claim text.