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US 12,138,720 B2Granted
Article and method of making an article by chemical vapor infiltration
AssigneeRtx Corporation
InventorsRobert A. White, III, David A. Litton, Timothy J. Harding
Life of this patent
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Abstract
A method of repairing a nonconforming article includes applying a machinable coating to an article with a nonconformance. The article includes a preform at least partially infiltrated with a matrix material, to form a repaired article. The method also includes machining the machinable coating and completing infiltration of the repaired article with the matrix material. A method of repairing an article is also disclosed.
Claims16
A method of repairing a nonconforming article, comprising:
- applying a machinable coating to an article with a nonconformance, the article including a preform at least partially infiltrated with a matrix material, to form a repaired article;
- machining the machinable coating;
- completing infiltration of the repaired article with the matrix material;
- wherein the nonconformance is that the article is smaller in a respect than a desired geometry of the article;
- and
- wherein the applying includes applying the machinable coating to a geometry that is larger than the desired geometry in the respect.
3 more elements
A method of repairing an article, comprising:
- placing a preform including ceramic-based reinforcements into a reactor;
- flowing reactive gases through the reactor to infiltrate ceramic-based matrix material into the preform;
- removing an at least partially-infiltrated article from the reactor, the at least partially-infiltrated article having a nonconformance;
- applying a machinable coating for repairing the nonconformance;
- replacing the at least partially-infiltrated article in the reactor;
- flowing reactive gases through the reactor to complete infiltration of the ceramic-based matrix material into the at least partially-infiltrated article;
- wherein the applying includes applying the machinable coating to an applied geometry that is larger than a desired geometry in the respect;
- and
- further comprising machining the machinable coating to the desired geometry.
6 more elements
Dependencies are inferred from the claim text.