Patent · US Active

Method of repairing run-in coatings

US9303522B2 · kind B2 · utility

0Cited by

4References

1Claims

0Family size

Assignee

MTU Aero Engines AG · DE

Inventors

Manfred A. Daeubler · Dachau, DE
Andre Werner · Munich, DE
Heinrich Walter · Friedberg, DE

Key dates

Filing date	Jun 14, 2007
Grant date	Apr 5, 2016
Priority date	—
Expiry date	Mar 1, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05D2300/228
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A method for repairing run-in coatings is provided. The method includes the steps of filling a damaged site of the 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.