Environmental barrier coating and method of repairing the same

A method of repairing a coating on an article, comprising:

• defining a work area surrounding a discontinuity in the coating, the coating including undisturbed bond coat and undisturbed top coat, and the discontinuity being in the top coat;
• removing top coat material within the work area to reveal undisturbed bond coat;
• applying a slurry containing top coat constituents in a carrier fluid to the work area over the undisturbed bond coat;
• and
• curing the slurry to form a repaired top coat.

An article, comprising:

• a ceramic matrix composite substrate;
• a coating disposed on the substrate, the coating comprising
• an undisturbed bond coat including a matrix, gettering particles dispersed in the matrix, and diffusive particles dispersed in the matrix, and
• an undisturbed top coat disposed on the bond coat;
• wherein the coating includes a repair, the repair including repaired bond coat continuous with the undisturbed bond coat and repaired top coat continuous with the undisturbed top coat, and wherein the repaired bond coat contains a higher concentration of diffusive particles than the undisturbed bond coat.