US Patent Issued to RTX on Aug. 11 for "Hafnon and zircon environmental barrier coatings for silicon-based components" (Connecticut, California Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,703,668, issued on Aug. 11, was assigned to RTX Corp. (Farmington, Conn.).

"Hafnon and zircon environmental barrier coatings for silicon-based components" was invented by Xuan Liu (Glastonbury, Conn.), James T. Beals (West Hartford, Conn.), Xia Tang (West Hartford, Conn.), Richard Wesley Jackson III (Mystic, Conn.) and William J. Joost (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for coating a substrate includes spraying a combination of powders. The combination of powders includes: Hf0.5Si0.5O2; Zr0.5Si0.5O2; and, optionally, at least one of HfO2 and ZrO2. A molar ratio of said Hf0.5Si0.5O2 and HfO2 combined to said Zr0.5Si...