Methods of Improving Surface Roughness of an Environmental Barrier Coating and Components Comprising Environmental Barrier Coatings Having Improved Surface Roughness

摘要

A method for improving surface roughness of an environmental barrier coating (12) comprising: providing a component (10) having a plasma sprayed environmental barrier coating; applying a slurry to the environmental barrier coating of the component, the slurry comprising a transition layer slurry or an outer layer slurry; drying the environmental barrier coating having the applied slurry; and sintering the component to produce a component having an improved surface roughness wherein the slurry comprises: water; a primary transition material, or a primary outer material; and at least one slurry sintering aid.