Wear-resistant coating system and method

Details Wear-resistant coating system and method Wear-resistant coating system and method

C - Chemistry, Metallurgy

23

C

C23C 24/10 (2006.01) C23C 26/02 (2006.01)

Patent

CA 2750275

A method of forming a wear-resistant coating (14) on a metal substrate (12) includes depositing a metal alloy onto the metal substrate (12) to form a cladding (16), rough finishing the cladding (16) to thereby provide the cladding (16) with an average roughness, R a, of from about 50 micro-inches to about 150 micro-inches, and work hardening the cladding (16) to thereby form the wear-resistant coating (14) and a hardened zone (18) thereof, wherein the hardened zone (18) has a hardness greater than a hardness of the metal substrate (12). A wear-resistant coating system (10) includes the metal substrate (12) and the wear-resistant coating (14) disposed on the metal substrate (12). The wear-resistant coating (14) is substantially resistant to corrosion from sea water at an ambient temperature of from about -40°C to about 50°C.

Un procédé de formation d'un revêtement résistant à l'usure (14) sur un substrat de métal (12) comprend le dépôt d'un alliage de métal sur le substrat de métal (12) pour former un placage (16) et lui donner un fini rugueux pour donner ainsi au placage (16) une rugosité moyenne, Ra, d'environ 50 micropouces à environ 150 micropouces, et l'écrouissage du placage (16) pour former ainsi le revêtement résistant à l'usure (14) et une zone durcie (18) de celui-ci, la zone durcie (18) possédant une dureté supérieure à une dureté du substrat de métal (12). Un système de revêtement résistant à l'usure (10) comprend le substrat de métal (12) et le revêtement résistant à l'usure (14) disposé sur le substrat de métal (12). Le revêtement résistant à l'usure (14) est sensiblement résistant à la corrosion de l'eau de mer à une température ambiante d'environ -40 °C à environ 50 °C.

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