US Patent Issued to RTX on March 3 for "Multilayer interface coating with thermally-grown oxide for improved durability" (California Inventor)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,454, issued on March 3, was assigned to RTX Corp. (Farmington, Conn.).

"Multilayer interface coating with thermally-grown oxide for improved durability" was invented by Evan B. Callaway (Santa Barbara, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coated fiber structure for use in a ceramic matrix composite comprises a fiber and a coating system applied to and circumscribing the fiber. The coating system comprises a first boron nitride layer, a silicon carbide layer extending coaxially with and in direct contact with the first boron nitride layer, a first thermally-grown oxide layer formed on the silicon carbide layer, and a second boron n...