US Patent Issued to Pratt & Whitney Canada on May 12 for "Oxidation and SRZ resistant coatings on nickel superalloys" (Canadian Inventor)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,420, issued on May 12, was assigned to Pratt & Whitney Canada Corp. (Longueuil, Canada).

"Oxidation and SRZ resistant coatings on nickel superalloys" was invented by Joel Larose (Longueuil, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "An article has a nickel-based alloy substrate having, in weight percent: 5.4-7.4 Re; 4.1-5.9 Ru; 3.0-6.2 Cr; 3.0-10.0 Co; 0.5-3.8 Mo; 3.0-6.0 W; 4.6-8.6 Ta; 5.0-6.4 Al; 0.050-0.30 Hf; no more than 0.50 all other elements, if any, individually; and no more than 2.0 all other elements, if any, combined. A nickel-based coating is on the substrate and comprising, in weight percent: 6.0-10.0 Al; 4.0-15.0 Cr; 11.0-15...