Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2006-01-03
2006-01-03
Koehler, Robert R. (Department: 1775)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C428S636000, C428S544000, C428S926000, C029S889100, C029S402010, C029S402090, C029S402130, C029S402160, C029S402180, C148S527000, C228S119000, C228S262300
Reexamination Certificate
active
06982123
ABSTRACT:
A nickel-base superalloy article, such as a gas turbine stationary flowpath shroud that has previously been in service, is repaired by applying a restoration coating to a surface of the article. The restoration coating is applied by providing a precursor mixture, wherein the precursor mixture has no more than about 15 weight percent chromium and no more than about 0.01 percent yttrium, and wherein the precursor mixture includes a higher-melting-point alloy component and a lower-melting-point alloy component. The precursor mixture is applied to the surface of the article, in a form such as a preform of the alloy components. The article with the precursor mixture applied to the surface thereof is heated to a sufficiently high temperature to melt the lower-melting-point alloy component, thereby forming the restoration coating on the surface of the article.
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Budinger David Edwin
Grossklaus, Jr. Warren Davis
Jackson Melvin Robert
Miller Joshua Leigh
Miller Matthew Nicklus
General Electric Company
Koehler Robert R.
McNees Wallace & Nurick LLC
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