Method for applying protective coatings

Details Method for applying protective coatings Method for applying protective coatings

C - Chemistry, Metallurgy

23

C

117/53, 204/96.0

C23C 4/02 (2006.01) C23C 28/00 (2006.01) C23C 28/02 (2006.01)

Patent

CA 1278772

Abstract Of The Disclosure Flame sprayed aluminum coatings have been shown to be of excellent value in providing cathodic protect- ion to steel structures in a marine environment. The common method of applying flame sprayed aluminum to a steel substrate comprises providing an anchor pattern to the substrate. Such anchor pattern can result in fatigue cracking of the substrate developing within the surface discontinuities of the anchor pat- tern. The present invention provides a method for providing a layered, ion sputtered aluminum base coating on the substrate to which a flame sprayed aluminum coating may adhere without the need for a roughened surface on the substrate with its consequent potential for reduction of fatigue strength.

522902

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