High-Temperature Environmental Barrier Coating for Silicon Carbide Composites

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9550-09-C-0156
Agency Tracking Number: F08B-T21-0191
Amount: $99,971.00
Phase: Phase I
Program: STTR
Awards Year: 2009
Solicitation Year: 2008
Solicitation Topic Code: AF08-BT21
Solicitation Number: 2008.B
Small Business Information
Directed Vapor Technologies Internationa
2 Boar's Head Lane, Charlottesville, VA, 22903
DUNS: 036500804
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Derek Hass
 Dir. of Research and Deve
 (434) 977-1405
Business Contact
 Harry Burns
Title: President and CEO
Phone: (434) 977-1405
Email: harryburns@directedvapor.com
Research Institution
 U. of California, Santa Barbara
 Carlos Levi
 1361D Engineering II
UC Santa Barbara
Santa Barbara, CA, 93106
 (805) 893-2381
 Nonprofit college or university
Advanced thermal/environmental barrier coating (T/EBC) systems are desired to protect Si-based ceramics in high temperature, water vapor containing environments. In this work, we will use novel coating synthesis techniques that enable the economical deposition of enhanced T/EBCs having higher temperature capability, improved durability and better erosion resistance than that of current state-of-the-art T/EBC systems (based on silicon/mullite + barium strontium aluminosilicate (BSAS)/BSAS). In the proposed Phase I effort, DVTI will team with UC Santa Barbara to identify T/EBC systems that are anticipated to meet the performance goals at both current and future engine operating temperatures and demonstrate the feasibility of applying these coatings using advanced processing approaches will enable enhanced coating microstuctural control and adhesion. The successful completion of the Phase I work will lead to a follow-on Phase II program focused on down-selecting candidate material(s) and applying the new coating onto complex Si-based components (including those having non line-of-sight regions) for testing using DVTIs production scale coating equipment. Success in this objective will offer the military a pathway toward production implementation of the advanced EBC systems developed in this work and the new deposition processing capabilities required for applying coatings of this type onto complex engine components. BENEFIT: This research is anticipated to result in a thermal/environmental barrier coating system that provides higher temperature capability, improved durability and better erosion resistance than current coatings. These advancements will enable the use of Si-based ceramics in a range of high temperature applications such a gas turbine engines and heat exchangers. These advances will not only benefit military engines, but also commercial and industrial engines requiring greater performance.)

* information listed above is at the time of submission.

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