Back to results
US 9,713,912 B2Granted
Features for mitigating thermal or mechanical stress on an environmental barrier coating
AssigneeROLLS-ROYCE plc
InventorKang N. Lee
Life of this patent
Estimating the term…
Abstract
An article may include a substrate comprising a matrix material and a reinforcement material, a layer formed on the substrate, an array of features formed on the layer, and a coating formed on the layer and the array of features. The article may have improved thermal and/or mechanical stress tolerance compared to an article not including the array of features formed on the layer.
Claims30
An article comprising:
- a ceramic matrix composite substrate comprising a matrix material and a reinforcement material;
- a layer on the substrate, wherein the layer comprises the matrix material, and wherein the layer defines a surface and comprises an array of features in the surface;
- a bond coat on the layer and the array of features;
- and
- an abradable coating over the bond coat, wherein the abradable coating comprises a rare earth silicate and a porosity of between about 30 vol. % and about 45 vol. %.
2 more elements
A method comprising:
- forming a layer on a ceramic matrix composite substrate, wherein the ceramic matrix composite substrate comprises a matrix material and a reinforcement material, and wherein the layer comprises the matrix material and defines a surface;
- forming an array of features in the surface of the layer;
- forming a bond coat on the layer;
- forming an abradable coating over the bond coat and the array of features, wherein the abradable coating comprises a rare earth silicate and a porosity of between about 30 vol. % and about 45 vol. %.
1 more element
Dependencies are inferred from the claim text.