ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,926, issued on July 1, was assigned to RTX Corp. (Farmington, Conn.).
"Aluminum-chromium diffusion coating" was invented by Michael N. Task (Vernon, Conn.) and Xuan Liu (Glastonbury, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A process includes applying a slurry to a surface of a metallic article to produce a slurry film on the surface. The slurry is composed of a liquid carrier, chromium and aluminum, and an agent that is reactive with the chromium and aluminum to form intermediary compounds. The article and slurry film are then thermally treated at an activation temperature at which the agent reacts with the chromium and aluminum to form ...