Thermal/environmental barrier coating with transition layer...

Details Thermal/environmental barrier coating with transition layer... Thermal/environmental barrier coating with transition layer...

2006-10-03

2006-10-03

McNeil, Jennifer C. (Department: 1775)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S699000, C428S701000, C428S702000, C416S24100B, C427S252000

Reexamination Certificate

active

07115327

ABSTRACT:
An article comprising a substrate formed of a silicon-comprising material, such as an article exposed to the hostile thermal environment of a gas turbine engine. The article further comprises an environmental barrier layer, e.g., an alkaline earth metal aluminosilicate, and a top coat comprising zirconia or hafnia stabilized with an oxide of a metal selected from the group consisting of magnesium, calcium, scandium, yttrium, and lanthanide metals, and mixtures thereof. The article further comprises a transition layer between the environmental barrier layer and the top coat, the transition layer comprising zirconia or hafnia stabilized with an oxide of a metal selected from the group consisting of magnesium, calcium, scandium, yttrium, and lanthanide metals; and a low CTE oxide selected from the group consisting of niobia and tantala; and mixtures thereof. A method for preparing a thermal/environmental barrier coating system on a substrate formed of a silicon-comprising material is also disclosed.

REFERENCES:
patent: 5641440 (1997-06-01), Talmy et al.
patent: 5985470 (1999-11-01), Spitsberg et al.
patent: 6129954 (2000-10-01), Spitsberg et al.
patent: 6197424 (2001-03-01), Morrison et al.
patent: 6352790 (2002-03-01), Eaton et al.
patent: 6365288 (2002-04-01), Eaton et al.
patent: 6387456 (2002-05-01), Eaton, Jr. et al.
patent: 6444335 (2002-09-01), Wang et al.
patent: 6485848 (2002-11-01), Wang et al.
patent: 6558814 (2003-05-01), Spitsberg et al.
patent: 6565990 (2003-05-01), Bewlay et al.
patent: 6602356 (2003-08-01), Nagaraj et al.
patent: 6607852 (2003-08-01), Spitsberg et al.
patent: 6627323 (2003-09-01), Nagaraj et al.
patent: 6699607 (2004-03-01), Spitsberg
patent: 6730422 (2004-05-01), Litton et al.
patent: 6733907 (2004-05-01), Morrison et al.
patent: 6733908 (2004-05-01), Lee et al.
patent: 6740364 (2004-05-01), Lau et al.
patent: 6759151 (2004-07-01), Lee
patent: 6787195 (2004-09-01), Wang et al.
patent: 6887595 (2005-05-01), Darolia et al.
patent: 2003/0066578 (2003-04-01), Jackson et al.
patent: 2003/0152797 (2003-08-01), Darolia et al.
patent: 2003/0157361 (2003-08-01), Nagaraj et al.
patent: 2003/0207155 (2003-11-01), Morrison et al.
patent: 2004/0115471 (2004-06-01), Nagaraj et al.
patent: 2004/0175597 (2004-09-01), Litton et al.
patent: 2005/0036891 (2005-02-01), Spitsberg et al.
patent: 2005/0064225 (2005-03-01), Leclercq et al.
U.S. Appl. No. 11/040,157, filed Jan. 21, 2005, Spitsberg et al.
U.S. Appl. No. 11/040,156, filed Jan. 21, 2005, Spitsberg et al.
U.S. Appl. No. 11/040,855, filed Jan. 21, 2005, Spitsberg et al.
U.S. Appl. No. 11/040,991, filed Jan. 21, 2005, Spitsberg et al.
U.S. Appl. No. 11/006,292, filed Dec. 6, 2004, Boutwell et al.
U.S. Appl. No. 11/006,368, filed Dec. 6, 2004, Govern et al.
U.S. Appl. No. 11/003,244, filed Dec. 3, 2004, Gorman et al.
U.S. Appl. No. 10/709,288, filed Apr. 27, 2004, Spitsberg et al.
Zhu, Dongming et al, Thermal and Environmental Barrier Coatings for Advanced Propulsion Engine Systems, published in the Proceedings of AHS International 60thAnnual Forum and Technology Display, Jun. 7-10, 2004, Baltimore, Maryland, pp. 703-709.
Mulpuri, R.P., et al., Synthesis of Mullite Coatings by Chemical Vapor Deposition, Journal of Materials Research, 11 [6] 1315-1324 (1996).
Zhu, Dongming et al, Durability and Design Issues of Thermal/Environmental Barrier Coatings on SiC-Based Ceramics under 1650° C. Test Condistions, The 28thInternational Cocoa Beach Conference on Advanced Ceramics and Composites, Jan. 29, 2004.
Basu, S.N., et al., Functionally Graded CVD Mullite Environmental Barrier Coatings, Department of Manufacturing Engineering, Boston University, Brookline, MA, presented at The 28thInternational Cocoa Beach Conference on Advanced Ceramics and Composites, Jan. 29, 2004.

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