Method and composition for surface treatment of metals
AssigneeUniversity of Pittsburgh
InventorsRobert M. Enick, Eric Beckman
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Abstract
A method for coating a metal surface, comprising: applying a solution comprising an amide thiol compound and a solvent to a metal surface, allowing the thiol compound to self assemble on the surface, and removing excess thiol compound from the surface. The amide thiol compound is preferably a fluoralkyl amide thiol and more preferably one having the general formula F(CF2)nCONH(CH2)nSH, where n and m are each 2-20. The solution can be sprayed onto the metal surface, or the metal surface can be dipped into the solution. The surface should be kept wet for a time period sufficient to allow the thiol molecules to self assemble on the metal surface.
Claims12
A method for providing a gas-, water-, oil- and corrosion-resistant coating on a metal surface, comprising:
- (a) applying a solution comprising fluoroalkyl amide thiol compound dissolved in a liquid solvent to a metal surface;
- (b) allowing the thiol compound to self assemble on the surface;
- and
- (c) removing excess thiol compound from the surface;
- wherein steps (a) and (b) are carried out at substantially ambient temperature and step (b) is completed in less than 30 minutes.
A method for providing an oxidizable metal surface with a corrosion-resistant coating, comprising:
- (a) applying a solution comprising an amide thiol compound and a solvent to a metal surface, wherein the solvent is selected from the group consisting of hydrofluoroethers, fluoroalkanes, mixtures of alcohol and water, and liquid carbon dioxide;
- and
- (b) allowing the thiol compound to self assemble and form a coating layer on the surface at substantially room temperature in less than about 30 minutes.
Dependencies are inferred from the claim text.