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Title: Articles for high temperature service and methods for their manufacture

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 comprising an alkaline-earth aluminosilicate 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 alkaline-earth aluminosilicate 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.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
1257248
Assignee:
General Electric Company (Niskayuna, NY) NETL
Patent Number(s):
9,365,725
Application Number:
11/941,415
Contract Number:
FC26-05NT42643
Resource Relation:
Patent File Date: 2007 Nov 16
Research Org:
General Electric Company, Niskayuna, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE