Method for repairing a thermal barrier coating

Details Method for repairing a thermal barrier coating Method for repairing a thermal barrier coating

1996-12-11

1999-05-04

Housel, James C.

Adhesive bonding and miscellaneous chemical manufacture

Differential fluid etching apparatus

With microwave gas energizing means

134 3, 134 7, 134 19, 134 21, 134 27, 216 2, 2940206, B32B 1500, C23G 102

Patent

active

059001020

ABSTRACT:
A method for repairing a thermal barrier coating on an article designed for use in a hostile thermal environment, such as turbine, combustor and augmentor components of a gas turbine engine. The method is particularly suited for the repair of thermal barrier coatings composed of an aluminide bond coat formed on the surface of an article, and an insulating columnar ceramic layer overlaying the bond coat. Processing steps generally include preparing a powder mixture of a halogen-containing activator and an aluminum-containing material, contacting the ceramic layer with the mixture, and then heating the ceramic layer for a duration sufficient to cause the halogen-containing activator to deteriorate the ceramic layer, while the aluminum-containing constituent of the mixture prevents the bond coat from being attacked or otherwise depleted by the halogen-containing activator. A suitable composition for the mixture is about 0.5 to about 1 weight percent of the halogen-containing activator and about 0.5 to about 1 weight percent of the aluminum-containing material, with the balance being an inert diluent.

REFERENCES:
patent: 3540878 (1970-11-01), Levine et al.
patent: 4004047 (1977-01-01), Grisik
patent: 4965095 (1990-10-01), Baldi
patent: 5254413 (1993-10-01), Maricocchi
patent: 5614054 (1997-03-01), Reeves et al.

Affiliated with

Also associated with

Rating

Method for repairing a thermal barrier coating does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for repairing a thermal barrier coating, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for repairing a thermal barrier coating will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1867860