Repair coating for superalloy articles, such as gas turbine engine components
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United States of America Patent
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Aug 1, 1995
Issued Date -
N/A
app pub date -
Feb 7, 1994
filing date -
Feb 7, 1994
priority date (Note) -
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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.
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