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US 2013/0029177 A1Published application
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.
Claims20
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.
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A method of preparing a coated magnesium substrate comprising:
- building a barrier layer comprising a plastically deformed barrier material on at least a region of the magnesium substrate;
- building an overlayer comprising a plastically deformed aluminum or zinc material 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 barrier material and the aluminum or zinc material.
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A coated magnesium substrate comprising:
- a magnesium substrate;
- a cold sprayed low melting point material on at least a portion of the magnesium substrate;
- and
- a cold sprayed protective material on at least a portion of the low melting point material.
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Dependencies are inferred from the claim text.