Gaseous modification of MCrAlY coatings

Details Gaseous modification of MCrAlY coatings Gaseous modification of MCrAlY coatings

1998-08-14

2000-10-10

Speer, Timothy M.

Stock material or miscellaneous articles

Composite

Of metal

428472, 428698, 428701, 148206, 148218, 148230, 148238, B32B 900, C23C 820, C23C 824, C23C 830

Patent

active

06129988&

ABSTRACT:
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.

REFERENCES:
patent: 4237193 (1980-12-01), Jackson et al.
patent: 4275124 (1981-06-01), McComas et al.
patent: 4419416 (1983-12-01), Gupta et al.
patent: 5035957 (1991-07-01), Bartlett et al.
patent: 5891267 (1999-04-01), Schaeffer et al.
O. Knotek et al., "Diffusion Barrier Coatings With Active Bonding, Designed For Gas Turbine Blades," Surface and Coatings Technology, 68/69 (1994) pp. 22-26.
A.A. Kodentsov et al., "High Temperature Nitridation of Ni--Cr Alloys," Metallurgical and Materials Transactions A,vol. 27A, No. 1, Jan. 1996, pp. 59-69.

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