Title:
COMPONENT REPAIR USING BRAZED SURFACE TEXTURED SUPERALLOY FOIL
Document Type and Number:
WIPO Patent Application WO/2014/197087
Kind Code:
A3
Abstract:
A superalloy component such as a gas turbine engine blade (40) having a ceramic thermal barrier coating (41) is repaired using a textured repair foil (30). A degraded region of the thermal barrier coating is removed (14) and the underlying superalloy material surface is prepared (16) for re-coating. The repair foil is includes a layer of boron-free braze material (34) and a layer of superalloy material (32) having a textured surface (36). The foil is brazed (18) to the prepared surface during a solution heat treatment effective to homogenize the braze (20). A new area of thermal barrier coating (46) is applied over the foil with a bond that is enhanced by the texturing of the foil surface.
Inventors:
KAMEL AHMED (US)
JOUINI DHAFER (US)
MERRILL GARY B (US)
OZBAYSAL KAZIM (US)
JOUINI DHAFER (US)
MERRILL GARY B (US)
OZBAYSAL KAZIM (US)
Application Number:
PCT/US2014/028200
Publication Date:
January 29, 2015
Filing Date:
March 14, 2014
Export Citation:
Assignee:
SIEMENS ENERGY INC (US)
International Classes:
F01D5/28; C23C28/00
Foreign References:
| US6042880A | 2000-03-28 | |||
| EP2233450A1 | 2010-09-29 | |||
| US6210812B1 | 2001-04-03 | |||
| JP2012112290A | 2012-06-14 | |||
| EP1201778A2 | 2002-05-02 | |||
| EP2568054A1 | 2013-03-13 |
Attorney, Agent or Firm:
RYAN, Daniel, J. et al. (3501 Quadrangle Blvd. Ste 23, Orlando FL, US)
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