Fabricating Porous Metallic Coatings Via Electrodeposition and Compositions Thereof

Patent metadata

Field	Value
Publication number	US-2019078226-A1
Application number	US-201816189065-A
Country	US
Kind code	A1
Filing date	Nov 13, 2018
Priority date	Feb 15, 2013
Publication date	Mar 14, 2019
Grant date	—

Abstract

A method is provided for creating a porous coating on a surface of a substrate by electrodeposition. The substrate is a part of the cathode. An anode is also provided. A coating is deposited or disposed on the surface by applying a voltage that creates a plurality of porous structures on the surface to be coated. Continuing to apply a voltage creates additional porosity and causes portions of the attached porous structures to detach. A covering layer is created by applying a voltage that creates a thin layer that covers the attached porous structures and the detached portions which binds the porous structures and detached portions together.

First claim

1 . An article, comprising: a surface having at least one region; and a porous coating on said at least one region of said surface, wherein the coating comprises a plurality of porous structures attached to said at least one region of said surface and at least one layer covering said porous structures.

2 . The article of claim 1 wherein between said coating and said surface, additionally applying one or more intermediate bonding layers between said coating and said surface.

3 . The article of claim 2 wherein said coating and said surface are different materials, and said one or more bonding layers are made of materials different from the materials of said coating and said surface.

4 . The article of claim 1 , wherein said coating is applied to said surface by electrodeposition

5 . The article of claim 1 wherein said porous structures and said covering layer are separately selected from metals, metal alloys, metallic compounds, conductive polymers or any combination thereof.

6 . The article of claim 1 wherein said surface is a metal, metal alloy, metallic compound, conductive polymer or any combination thereof.

7 . The article of claim 1 wherein said coating and said surface are the same material.

8 . The article of claim 1 wherein said coating and said surface are different materials.

9 . The article of claim 1 wherein said coating is hydrophobic.

10 . The article of claim 1 wherein said covering layer of the coating is selected from rare metals, rare metal alloys, rare metallic compounds or any combination thereof.

11 . The article of claim 1 wherein said coating comprises:
a first layer of porous structures on said at least one region of said surface;
a second layer of porous structures on said first layer of porous structure and detached from said first layer; and
a covering layer over said first and second layers of porous structures that binds said first and second layers of porous structures together.

12 . The article of claim 1 wherein said coating is copper.

13 . The article of claim 1 wherein said coating and said surface are copper.

14 . The article of claim 1 wherein said coating and said surface have a similar electrical conductivity.

15 . The article of claim 1 wherein said coating and said surface have a similar thermal conductivity.

16 . The article of claim 1 wherein said coating is superhydrophobic.

17 . The article of claim 16 wherein said coating additionally comprises a layer of a low-surface-energy material on the surface of said coating to improve its superhydrophobic property.

18 - 28 . (canceled)

29 . An application of the article of claim 1 wherein said coating is used in anti-corrosion, anti-fouling, anti-condensation, anti-ice, self-cleaning, anti-condensation, anti-friction, or anti-clotting applications.

30 . An application of the article of claim 1 wherein said porous coating is used to enhance the bonding of said coating to paint or polymer.

31 . An application of the article of claim 1 wherein said porous coating is used as a catalyst.

32 . The application of claim 31 , wherein the said covering layer comprises a catalytic material.

33 . The article of claim 1 wherein said covering layer is a catalytic material.

34 . An application of claim 1 wherein said article is used as a catalyst.

35 . (canceled)

Assignees

• Virginia Tech Intellectual Properties Inc

Inventors

• Haghdoost Atieh
• Pitchumani Ranga
• Kargar Mehdi

Classifications

• C25D5/00

  Electroplating characterised by the process; Pretreatment or after-treatment of workpieces · CPC title

• B01J37/0225

  of metal substrates · CPC title

• C09D7/61 Primary

  inorganic · CPC title

• B01J37/0238

  via the gaseous phase-sublimation · CPC title

• B01J35/0006

  Operations & Transport · mapped topic