Method of repairing run-in coatings

A method for repairing run-in coatings comprising the steps of:

• filling a damaged site of a run-in coating with a filling material having a material composition that corresponds to a material composition of the run-in coating or is comparable to the material composition of the run-in coating or having material properties that are comparable to material properties of the run-in coating;
• drying the filling material that has been filled into the damaged site;
• depositing a donor diffusion layer over an area of the damaged site and onto the dried filling material;
• and thermally treating the run-in coating at least in the area of the damaged site to locally diffuse at least one metallic element from the donor diffusion layer into the filling material;
• the filling material including ceramic constituents selected from a group consisting of graphite, hexagonal boron nitride, and bentonite;
• wherein the filling material includes a metallic powder provided with a binding agent;
• wherein the metallic powder is produced on a Ni-, Co- and/or Fe base.