US 6,296,942 B1 · Silicon based substrate with calcium aluminosilicate environmental/thermal barrier layer

Silicon based substrate with calcium aluminosilicate environmental/thermal barrier layer

AssigneesGeneral Electric Company, United Technologies Corporation, Nasa

InventorsHarry Edwin Eaton, Jr., William Patrick Allen, Robert Alden Miller, Nathan S. Jacobson, James L. Smialek, Elizabeth J. Opila, Kang N. Lee, Bangalore A. Nagaraj, Hongyu Wang, Peter Joel Meschter, Krishan Lal Luthra

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Abstract

A barrier layer for a silicon containing substrate which inhibits the formation of gaseous species of silicon when exposed to a high temperature aqueous environment comprises a calcium alumino silicate.

Claims28

Dependent claims

An article comprising:

a substrate comprising silicon;
and
a yttrium containing gaseous species of Si formation inhibiting barrier layer, wherein the barrier layer inhibits the formation of gaseous species of Si when the article is exposed to a high temperature, aqueous environment.

Dependencies are inferred from the claim text.