Invention Grant
- Patent Title: Method of making corrosion resistant and glossy appearance coating for light metal workpiece
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Application No.: US14670819Application Date: 2015-03-27
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Publication No.: US09797036B2Publication Date: 2017-10-24
- Inventor: Ming Liu , Lei Gao
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: CN201410666394 20141120
- Main IPC: B32B3/00
- IPC: B32B3/00 ; C23C8/80 ; B60B3/10 ; C23C8/04 ; C23C8/36 ; C23C14/08 ; C23C14/34 ; C23C28/00 ; C25D11/30 ; C25D13/14 ; C23C8/40 ; C25D7/00 ; C25D11/02 ; C25D11/20 ; C25D11/24 ; C25D11/26 ; C25D17/00 ; C25D17/06 ; C25D11/00 ; C25D13/22

Abstract:
A metal workpiece, such as a wheel, and a method of providing an enhanced corrosion resistant surface coating on an exposed surface of a metal or alloy substrate (such as magnesium). A corrosion resistance basecoat is formed, including generating an oxide layer, and applying a first primer coating onto at least a portion of the oxide layer. The method may further include identifying highest corrosion prone areas on the substrate and designing a support rack that avoids contact with these corrosion prone areas. The method also includes forming a topcoat over at least a portion of the basecoat, by applying a second primer coating onto at least a portion of the first primer coating and depositing a sputtered metallic film onto the second primer coating using a physical vapor deposition technique. A clear coat layer may be applied over the metallic film.
Public/Granted literature
- US20150284836A1 Method Of Making Corrosion Resistant And Glossy Appearance Coating For Light Metal Workpiece Public/Granted day:2015-10-08
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