RECESSION RESISTANT CERAMIC MATRIX COMPOSITES AND ENVIRONMENTAL BARRIER COATINGS

Title:

RECESSION RESISTANT CERAMIC MATRIX COMPOSITES AND ENVIRONMENTAL BARRIER COATINGS

Document Type and Number:

WIPO Patent Application WO/2014/152238

Kind Code:

A3

Abstract:

The disclosure relates generally to recession resistant gas turbine engine articles that comprise a silicon containing substrate, and related coatings and methods. The present disclosure is directed, inter alia, to an engine article comprising a silicon substrate which is coated with a chemically stable porous oxide layer. The present disclosure also relates to articles comprising a substrate and a bond coat on top comprising a two phase layer of interconnected silicon and interconnected oxide, followed by a layer of silicon. The present disclosure further relates to a recession resistant article comprising an oxide in a silicon containing substrate, such that components of the silicon containing substrate is interconnected with oxides dispersed in the substrate and form the bulk of the recession resistant silicon containing article.

Inventors:

LUTHRA KRISHAN LAL (US)
CORMAN GREGORY SCOT (US)

Application Number:

PCT/US2014/027107

Publication Date:

November 06, 2014

Filing Date:

March 14, 2014

Export Citation:

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Assignee:

GEN ELECTRIC (US)

International Classes:

C04B41/89; C04B35/565; C04B35/571; C04B35/589; C04B41/45; C04B41/50; C23C4/04; C23C28/04; F01D5/28

Foreign References:

EP2284139A2	2011-02-16
EP2138477A2	2009-12-30
EP1044943A1	2000-10-18
EP2192098A2	2010-06-02
US20110052925A1	2011-03-03
EP1577499A2	2005-09-21
EP0453704A2	1991-10-30
EP0224873A1	1987-06-10
US20090130446A1	2009-05-21

Other References: