C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 16/06 (2006.01) C23C 8/02 (2006.01) C23C 10/60 (2006.01) C23C 14/06 (2006.01) C23C 16/02 (2006.01) C23C 28/00 (2006.01) F01D 5/28 (2006.01)
Patent
CA 2292384
A thermal barrier coating (TBC) system, comprising a metallic bond coat on an article surface and an outer ceramic TBC is repaired by renewing without removing the bond coat. The outer ceramic TBC is removed to expose a bond coat substrate. At least one discrete local surface area of the article surface subject to bond coat degradation is selected from a thermal pattern unique to the article surface from service operation. At least one renewal metal selected from Pt, Rh, and Pd is applied at least to the selected discrete local surface area and heated to diffuse the renewal metal into the bond coat substrate. An environmental resistant coating selected from aluminides and alloys including aluminum is applied at least to the discrete local surface area over the renewal metal. Thereafter, an outer ceramic TBC is applied to the article surface.
Conner Jeffrey Allen
Nagaraj Bangalore Aswatha
Rigney Joseph David
Wortman David John
Company General Electric
Craig Wilson And Company
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