ALEXANDRIA, Va., June 19 -- United States Patent no. 12,330,991, issued on June 17, was assigned to RTX Corp. (Farmington, Conn.).
"Turbine engine abradable systems" was invented by Christopher W. Strock (Boothbay Harbor, Maine) and Kevin C. Seymour (Riviera Beach, Fla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a method for forming an abradable material (36), the abradable material has at least 20% by volume rutile titania (44) and hBN (46). The method includes: blending a first titania powder having an oxygen debit of at least 5.0% with a second titania powder having an oxygen debit, if any, of less than 1.0%. The blend is thermal sprayed. The sprayed blend is then oxidized."
The patent was filed o...