Low Cost, Self-Healing EBCs Based on Al- and Zr- Modified Polysilazanes

Kion Defense Technologies, Inc. (KDT) has teamed with a composite producer and engine manufacturer to develop and demonstrate the effectiveness of a new Environmental Barrier Coating for SiC-based composites consisting of proven materials, but generated in a simple, lower cost manufacturing approach. KDT will employ its patented polysilazane resin manufacturing process to incorporate Al and Zr heteroatoms into its ceramic precursor (CERASETTM) resins to produce a multi-layer EBC consisting of a unique bond coat/topcoat system. This coating system will be compatible with the underlying composite, can function as a final cycle co-infiltrant in such a composite, and be applied with any simple coating methods, such as spray, dip, spin, or brush. Furthermore, it offers the ability for field repair of engine components on the aircraft.