Environmental barrier coating with physical barrier layer...

Details Environmental barrier coating with physical barrier layer... Environmental barrier coating with physical barrier layer...

2005-01-21

2008-11-11

Zimmerman, John J. (Department: 1794)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S446000, C428S450000, C428S697000, C428S699000, C428S702000, C416S24100B, C416S24100B

Reexamination Certificate

active

07449254

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 physical barrier layer overlying the environmental barrier layer. The physical barrier layer comprises 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 an environmental barrier coating system on a substrate formed of a silicon-comprising material is also disclosed.

REFERENCES:
patent: 5488018 (1996-01-01), Limaye
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: 6617037 (2003-09-01), Sun et al.
patent: 6627323 (2003-09-01), Nagaraj et al.
patent: 6686060 (2004-02-01), Bruce 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: 6808761 (2004-10-01), Chaput et al.
patent: 6887595 (2005-05-01), Darolia et al.
patent: 6890668 (2005-05-01), Bruce et al.
patent: 6902836 (2005-06-01), Eaton et al.
patent: 7115326 (2006-10-01), Spitsberg et al.
patent: 7115327 (2006-10-01), Spitsberg 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: 2005/0013993 (2005-01-01), Li et al.
patent: 2005/0036891 (2005-02-01), Spitsberg et al.
patent: 2005/0064225 (2005-03-01), Leclercq et al.
patent: 2006/0110609 (2006-05-01), Eaton et al.
Raghavan. Surface and Coatings Technology, vol. 160, Issues 2-3, Oct. 2002.
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.
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. 11/040,158, 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.

Affiliated with

Also associated with

Rating

Environmental barrier coating with physical barrier layer... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Environmental barrier coating with physical barrier layer..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Environmental barrier coating with physical barrier layer... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4038098