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US 8,703,234 B2Granted
Cold sprayed and heat treated coating for magnesium
AssigneeGM Global Technology Operations LLC
InventorGuangling Song
Life of this patent
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Abstract
Methods of coating a magnesium substrate are provided along with coated magnesium substrates. A low melting point material is cold sprayed onto a region of the magnesium substrate. A corrosion resistant material or a zinc material is cold sprayed over at least a portion of the low melting point material to form a coated magnesium substrate. The coated magnesium substrate is then heated.
Claims17
A method of coating a magnesium substrate comprising:
- cold spraying a low melting point material onto a region of the magnesium substrate;
- cold spraying a corrosion resistant material over at least a portion of the low melting point material to form a coated magnesium substrate;
- and
- heating the coated magnesium substrate.
1 more element
A method of preparing a coated magnesium substrate comprising:
- building a barrier layer by a process where a low melting point barrier material is plastically deformed on at least a region of a magnesium substrate;
- building an overlayer by a process where an aluminum or a zinc material is plastically deformed over at least a region of the barrier layer to form the coated magnesium substrate;
- and
- heating the coated magnesium substrate to at least a melting temperature of at least one of the low melting point barrier material and the aluminum or zinc material.
1 more element
A method of coating a magnesium substrate comprising:
- cold spraying a material comprising a metal selected from the group consisting of antimony, bismuth, cadmium, lead, tin, and alloys and combinations thereof onto a region of the magnesium substrate;
- cold spraying a corrosion resistant material comprising a metal selected from the group consisting of aluminum, zinc, and combinations thereof over at least a portion of the material to form a coated magnesium substrate;
- and
- heating the coated magnesium substrate.
1 more element
Dependencies are inferred from the claim text.