Coating surfaces with nanostructures

Patent metadata

Field	Value
Publication number	US-2017081772-A1
Application number	US-201615349072-A
Country	US
Kind code	A1
Filing date	Nov 11, 2016
Priority date	May 12, 2014
Publication date	Mar 23, 2017
Grant date	—

Abstract

At least one substrate part for is provided for coating. A first deposition is provided on the at least one support part as microstructuring of at least one first substance selected from the group consisting of rhenium, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, tin, zinc, copper, cobalt, lead, nickel and alloys comprising these, from at least one first compound which provides the at least one first substance. A second deposition is provided on the at least one support part as a nano-structuring of at least one second substance chosen from a group comprising rhenium, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold and/or alloys thereof, of at least one second compound which provides the at least one second substance, in a solution.

First claim

1 .- 17 . (canceled)

18 . A process for coating surfaces with nanostructures, comprising:
providing at least one support part to be coated; providing a first deposition on the at least one support part as microstructuring of at least one first substance selected from the group consisting of rhenium, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, tin, zinc, copper, cobalt, lead, nickel, and alloys comprising these, from at least one first compound which provides the at least one first substance; providing a second deposition as nanostructuring of at least one second substance selected from the group consisting of rhenium, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, and alloys comprising these, from at least one second compound which provides the at least one second substance, in a solution.

19 . The process as claimed in claim 18 , wherein the second deposition is carried out electrochemically or by colloid synthesis.

20 . The process as claimed in claim 18 , wherein at least one reducing agent is used for the second deposition.

21 . The process as claimed in claim 20 , wherein at least one of formic acids, borohydride, hydrazine, hydrogen, citric acid and derivatives thereof, ascorbic acid, ethanol, vitamin B2 and potassium bitartrate are used as reducing agent.

22 . The process as claimed in claim 18 , wherein an aqueous solution is used for the second deposition.

23 . The process as claimed in claim 18 , wherein the concentration of the at least one second substance in the solution in the second deposition is at least 0.01 gram per liter.

24 . The process as claimed in claim 20 , wherein the concentration of the at least one reducing agent in the second deposition is in a range from about 0.05 milliMolar to about 5 Molar.

25 . The process as claimed in claim 18 , wherein the concentration of the at least one first substance in the first deposition is at least 0.1 gram per liter.

26 . The process as claimed in claim 18 , wherein at least one of the at least one first compound and the at least one second compound is selected from the group consisting of hexachloro or tetrachloro compounds, phosphates, sulfates, oxides, nitrates, halogens, carbonyls, acetates, cyanides, complex salts and oxygen- and chlorine-containing hydrogen acids of the at least one first substance and second substance.

27 . The process as claimed in claim 18 , wherein at least one substance from the group consisting of rhenium, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, and alloys comprising these, and a compound containing metal ions is used in the first deposition.

28 . The process as claimed in claim 27 , wherein the compound containing metal ions is selected from the group consisting of acetates, sulfides and sulfates of metals of groups IVb, Vb, VIb, IVa and Va of the Periodic Table.

29 . The process as claimed in claim 18 , wherein the second deposition is carried out over a period of at least one hour.

30 . The process as claimed in claim 18 , wherein the first deposition is carried out in a period of from about one minute to about 60 minutes.

31 . The process as claimed in claim 18 , wherein the support part is provided with the at least one substance in the polycrystalline state.

32 . The process as claimed in claim 18 , wherein the support part consists of a material selected from the group consisting of glass, metals, semiconductors, polymers and PEM.

33 . A coated component, produced by:
providing at least one support part to be coated; providing a first deposition on the at least one support part as microstructuring of at least one first substance selected from the group consisting of rhenium, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, tin, zinc, copper, cobalt, lead, nickel, and alloys comprising these, from at least one first compound which provides the at least one first substance; providing a second deposition as nanostructuring of at least one second substance selected from the group consisting of rhenium, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, and alloys comprising these, from at least one second compound which provides the at least one second substance, in a solution.

Assignees

• Univ Freiburg Albert Ludwigs

Inventors

• Daubinger Patrick
• Kieninger Jochen
• Urban Gerald

Classifications

• Y02E60/50

  Fuel cells · CPC title

• C25D5/16 Primary

  Electroplating with layers of varying thickness · CPC title

• C25D5/10

  Electroplating with more than one layer of the same or of different metals (for bearings C25D7/10) · CPC title

• C25D3/52

  characterised by the organic bath constituents used · CPC title

• C23C18/1646 Primary

  Characteristics of the product obtained · CPC title