Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2011-06-28
2011-06-28
Blackwell, Gwendolyn (Department: 1784)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S432000, C428S698000, C428S701000, C501S064000, C501S068000, C501S152000
Reexamination Certificate
active
07968217
ABSTRACT:
An article for use in aggressive environments is presented. In one embodiment, the article comprises a substrate and a self-sealing and substantially hermetic sealing layer disposed over the bondcoat. The substrate may be any high-temperature material, including, for instance, silicon-bearing ceramics and ceramic matrix composites. A method for making such articles is also presented. The method comprises providing a substrate; disposing a self-sealing layer over the substrate; and heating the sealing layer to a sealing temperature at which at least a portion of the sealing layer will flow.
REFERENCES:
patent: 3573078 (1971-03-01), Bacon
patent: 6296941 (2001-10-01), Eaton, Jr. et al.
patent: 6410148 (2002-06-01), Eaton, Jr. et al.
patent: 6617037 (2003-09-01), Sun et al.
patent: 6759151 (2004-07-01), Lee
patent: 2006/0029733 (2006-02-01), Bhatia et al.
Co-pending U.S. Appl. No. 11/298,735, filed Dec. 9, 2005, entitled “Environmental Barrier Coating for a Component and Method for Fabricating the Same”.
Johnson Curtis Alan
Luthra Krishan Lal
Meschter Peter Joel
Sarrafi-Nour Reza
Blackwell Gwendolyn
DiConza Paul J.
General Electric Company
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