The present invention generally describes methods for modifying MCrAlY coatings by using gaseous carburization, gaseous nitriding or gaseous carbonitriding. The modified MCrAlY coatings are useful in thermal barrier coating systems, which may be used in gas turbine engines.
This invention was made with government support under Contract No. DE-FC21-95MC32267, awarded by the United States Department of Energy. The government has certain rights in this invention.