ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,565, issued on July 1, was assigned to Rolls-Royce Corp. (Indianapolis).
"CMAS-resistant abradable coatings" was invented by Jun Shi (Carmel, Ind.) and Li Li (Carmel, Ind.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In some examples, an article includes a ceramic or a ceramic or ceramic matrix composite (CMC) substrate; and an abradable coating on the CMC substrate. The abradable coating includes a plurality of first rare earth (RE) silicate layers in an alternating arrangement with a plurality of second RE silicate layers, wherein the first RE silicate layers include a rare earth monosilicate and the second RE silicate layers include a rare earth...