NASA 1996 SBIR Phase I

PROJECT TITLE : Scandia, Yttria Stabilized Zirconia Thermal Barrier Coatings

TECHNICAL ABSTRACT (LIMIT 200 WORDS)

Yttria-stabilized zirconia thermal barrier coatings don't have the desired long term, high temperature stability which is needed for advanced aerospace propulsion applications. The coatings undergo phase transformations, are attacked by molten salts, and sinter and shrink, which reduces their strain tolerance, and leads to short service lifetimes.

In this program we develop and optimize the very promising new materials systemof scandia, yttria co-stabilized zirconia which exhibits exceptional high temperature phase stability and corrosion resistance. A sol-gel synthesis technique is employed for producing compositionally homogeneous plasma spray powders comprising spherical particles of predetermined size distribution.

Commercial applications include coatings for jet engine gas turbine components, rocket components, high temperature components for supersonic transport propulsion systems, industrial gas turbines, and electric utility combustion turbines.

Dr. Derek Mess
Cambridge Microtech, Inc.
100 Inman Street, Suite 301
Cambridge, MA 02139

Cambridge Microtech, Inc.
100 Inman Street, Suite 301
Cambridge, MA 02139