Title:
REPAIR COATING FOR SUPERALLOY ARTICLES, SUCH AS GAS TURBINE ENGINE COMPONENTS
Document Type and Number:
WIPO Patent Application WO1995021042
Kind Code:
A3
Abstract:
A repair coating for superalloy articles, such as gas turbine engine components, includes a volatile organic carrier or water-based carrier, a fluxing agent, a thickening agent, balance a filler mix. The filler mix consists of at least two distinct particulate components. The mix includes a first particulate component having a composition which approximates that of the article being repaired. The mix also includes a second particulate component having a composition approximating that of the article and a melting point depressant, such as boron. This melting point depressant is substantially in excess of that in the article and sufficient to provide melting of a portion of the mix at a processing temperature below the melting temperature of the article. The above filler mix is blended with the other constituents to form the repair coating which is applied to an article.
Inventors:
DRAGHI PETER J
PIETRUSKA NORMAN
ARMSTRONG WAYNE F
PIETRUSKA NORMAN
ARMSTRONG WAYNE F
Application Number:
PCT/US1995/001310
Publication Date:
September 14, 1995
Filing Date:
January 31, 1995
Export Citation:
Assignee:
UNITED TECHNOLOGIES CORP (US)
International Classes:
F01D5/28; B05D7/14; B23K35/02; B23K35/14; B23K35/30; B23P6/04; C23C30/00; C23G5/00; F02C7/00; (IPC1-7): B23K35/30; B23K35/36; B23P6/04
Domestic Patent References:
| WO1993022097A1 | 1993-11-11 |
Foreign References:
| EP0353843A1 | 1990-02-07 | |||
| US5240491A | 1993-08-31 | |||
| FR2511908A1 | 1983-03-04 | |||
| US5263641A | 1993-11-23 | |||
| US5182080A | 1993-01-26 | |||
| US5071054A | 1991-12-10 | |||
| US4475959A | 1984-10-09 |
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