High Oxygen Affinity Doping of Boron Nitride for Tough, Durable SiC/SiC Composites

Hyper-Therm High-Temperature Composites, Inc.

Huntington Beach, CA

A novel doped-Boron Nitride (BN) fiber coating has been developed for advanced ceramic matrix composites (CMCs) which exhibits dramatically improved resistance to known moisture instability and high temperature oxidation

• 100X improvement in moisture stability over standard low temperature-derived BN fiber coatings. Composite stress rupture lives in excess of 1000 hours at 1200ºC.
• Routine fiber coating services performed for other CMC manufactures worldwide.
• Fiber coating currently undergoing rigorous qualification for use in CMCs on a major DoD weapons program.
• Doped-BN fiber coating technology represents unique national asset which is currently unavailable elsewhere.

• Commercial fiber coating sales in excess of $1M.
• Currently discussing possible company acquisition by a Fortune 500 defense contractor/CMC manufacturer.
• Over $250K capitalization investment made in FY03 by a major CMC manufacturer for manufacturing process scale-up and commercialization.
• Hyper-Therm HTC is a world leading supplier of CMCs.

• CMC materials and fiber coatings have been identified by NASA and DOD as an enabling technology for use in future high speed aerospace vehicles and propulsion systems.
• Fiber coatings are currently being produced for NASA CMC development/evaluation under the UEET (Ultra Efficient Engine Technology) program.
• A number of NASA programs currently are targeting CMCs including UEET, Next Generation Launch Technology and Orbital Space Plane. These programs require improved durability CMC composites. The doped coatings demonstrated under this SBIR effort provide a means for attaining CMC durability improvement.
  

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Curator: SBIR Support