SBIR 95-1 SOLICITATION
CHEMICAL VAPOR DEPOSITION OF TURBINE THERMAL BARRIER COATINGS
Ceramic thermal barrier coatings extend the operating temperature
range of actively cooled gas turbine components, increasing thermal
efficiency. Performance and lifetime of existing ceramic coatings
are limited by spallation during heating and cooling cycles.
Spallation of the ceramic is a function of its microstructure,
which is determined by deposition method. The proposed research
will determine whether metalorganic chemical vapor deposition
(MOCVD) of yttria stabilized zirconia (YSZ) coatings, by varying
their microstructure, meet NASA's need for thermal barrier coatings
which perform better and are more affordable than those now applied
by electron beam evaporators.
Spire Corporation will use MOCVD, not previously evaluated for this
application, to deposit YSZ coatings on coupons of turbine blade
materials provided by a jet engine manufacturer. Spire will
characterize the coatings' composition and crystal structure, while
the manufacturer characterizes their response to thermal cycling in
the turbine environment. In Phase II of the proposed research
program, actual engine components will be coated and tested.
Potential Commercial Applications:
Existing coating techniques now used in jet engine manufacture
would be replaced by MOCVD of YSZ if the material demonstrates
improved performance or lower cost.
Name and Address of Offeror:
One Patriots Park
Bedford, MA 01730-2396
Small Business Innovation Research Program (SBIR) &
Small Business Technology Transfer Program (STTR) Programs
Electronic Management System (EMS)
National Aeronautics and Space Administration (NASA)
The SBIR/STTR EMS site is maintained by Steve
Hu, Hughes STX.
For comments and questions, contact
Updated: Feb. 7, 1996