Repair of coatings and surfaces using reactive metals coating processes
OwnerRobert Frank Hoskininventor
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Abstract
This invention pertains to the repair of parts comprising metals, and surfaces and coatings of these parts using reactive metals coating processes. Processes such as chemical vapor deposition (CVD), physical vapor deposition (PVD), plasma spray, and reactive coating (boronizing, carburizing, nitridizing, carbonitridizing, etc.) are known for producing durable coatings or surfaces on metal parts, and the present invention provides a means to spot-repair these coatings or surfaces without excessive buildup of repair material on undamaged areas.
Claims29
A method for repairing a surface on a metal substrate where said surface has a pre-repair chemical composition that varies with depth and at least a portion of said surface is missing from the substrate, the method comprising:
- treatment of said surface with a reactive metals process,
- wherein said reactive metals process substantially excludes deposition of additional material onto said surface.
A method for repairing a surface on a metal substrate where said surface has a pre-repair chemical composition that varies with depth and at least a portion of said surface is missing from said substrate due to at least one of abrasion, erosion, impact damage and corrosion, the method comprising:
- treatment of said surface with a reactive metals process,
- wherein said reactive metals process substantially excludes deposition of additional material onto said surface.
A method for repairing a surface on a metal substrate where said surface has a pre-repair chemical composition that varies with depth and at least a portion of said surface is missing from said substrate, the method comprising:
- mechanical smoothing in at least the area where said missing portion is absent from said surface.
A method for repairing a pre-repair surface on a metal substrate where the surface was produced by at least one of chemical vapor deposition, physical vapor deposition, plasma spray, and reactive metals coating, where said surface has a pre-repair chemical composition that varies with depth and at least a portion of said surface is missing from said substrate, the method comprising:
- treatment of said surface with a reactive metals process, wherein said reactive metals process substantially excludes deposition of additional material onto said surface.
A method for repairing a surface on a metal substrate where said surface has a pre-repair chemical composition that varies with depth and at least a portion of said surface is missing from said substrate, where said substrate comprises alloys composed of at least one element from the group that includes aluminum, chromium, iron, nickel, and titanium, the method comprising:
- treatment of said surface with a reactive metals process, wherein said reactive metals process substantially excludes deposition of additional material onto said surface.
Dependencies are inferred from the claim text.