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US 10,329,432 B2Granted
Corrosion resistant hydrophobic coatings and methods of production thereof
AssigneeUnited Technologies Corporation
InventorsNeal Magdefrau, Daniel G. Goberman, Paul Sheedy, Aaron T. Nardi
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Abstract
A cost-effective method of forming a hydrophobic coating on a substrate and coated substrates are disclosed. Specifically, the method comprises applying amorphous powders of an alloy to the substrate through a cold spray process. Also provided is a novel type of hydrophobic coating made of metallic glasses or amorphous alloys. The hydrophobic coatings offer advantages such as, low cost, low maintenance, and high corrosion resistance.
Claims12
A method of forming a coating on a substrate, comprising
- 1) applying an alloy powder to the substrate, which powder is, at least in part, an amorphous alloy powder through a cold spray process;
- 2) obtaining a coating on the substrate which is, at least in part, amorphous;
- 3) heating the amorphous coating to form a superplastic forming region in at least a portion of said amorphous coating, and
- 4) patterning the amorphous coating to obtain nanoscale and/or microscopic features on a surface of said amorphous coating
- wherein the parameters of said cold spray process are controlled so that the temperature occurring during said cold spray process does not exceed the crystallization temperature of said alloy and the coating is a hydrophobic coating and further wherein the patterning step is performed through a rolling process.
2 more elements
Dependencies are inferred from the claim text.