Multi-Layer Coating System for Corrosion Protection of Magnesium Cylinder Block Against Coolant
AssigneeGM Global Technology Operations LLC
InventorsBrian J. MCCLORY, Yucong WANG, Mahmoud H. ABD ELHAMID
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Abstract
A metallic part with improved corrosion resistance includes a metallic substrate that is coated with a metal fluoride layer. A primer layer is disposed over the metal fluoride layer. Finally, the metallic part is over-coated with a polymeric layer that is disposed over the primer layer.
Claims19
A metallic part with improved corrosion resistance, the metallic part comprising:
- a metallic substrate;
- a metal fluoride layer disposed over the metal or metal alloy substrate;
- a primer layer disposed over the metal fluoride layer;
- and
- a polymeric layer disposed over the primer layer.
A method for forming a metallic part with improved corrosion resistance, the metallic part including a metallic substrate, a metal fluoride layer disposed over the metal or metal alloy substrate, a primer layer disposed over the metal fluoride layer, and a polymeric layer disposed over the primer layer, the method comprising:
- forming the metal fluoride layer on the metallic substrate;
- coating the metal fluoride layer with the primer layer;
- and
- coating the primer layer with the polymeric layer.
Dependencies are inferred from the claim text.