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Spray shadowing for stress relief and mechanical locking in thick protective coatings

United States Patent Application

20050064146
A1
View the Complete Application at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
An article with a surface that includes undercut grooves depending beneath the surface to a bottom portion, where the grooves have an upper width on the surface and a lower width on the bottom portion connected by side walls, and where at least one of said side walls connects the upper width to the lower width to form an undercut angle with the surface of less than 90.degree.. The article is covered with a coating that contains weak paths for stress relief. The coating fills the undercut grooves and ranges above the surface with a thickness from about 0.1 to 50 mm.
Hollis, Kendall (Los Alamos, NM), Bartram, Brian (Los Alamos, NM)
10/ 666,989
September 19, 2003
[0001] This invention was made with government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy. The government has certain rights in the invention.