skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Superhydrophobic anodized metals and method of making same

Abstract

Methods for producing a superhydrophobic anodized surface including anodizing a surface of a substrate in an anodization acid to form a plurality of pores, etching the surface with an etchant to widen an edge of each of the plurality of pores; repeatedly anodizing the surface in the anodization acid and etching the surface with the etchant until the edges of the plurality of pores overlap to form a plurality of nano-sharp ridges, and coating the surface with a hydrophobic polymer to render the surface superhydrophobic, such that the surface exhibits a contact angle of at least 150 degrees with a drop of water. Articles including a surface having a series of nano-sharp pore ridges defined by a series of pores and a mum thick layer of a hydrophobic polymer on said surface.

Inventors:
; ; ;
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1461529
Patent Number(s):
10011916
Application Number:
14/057,925
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25D - PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Oct 18
Country of Publication:
United States
Language:
English

Citation Formats

Barbier, Charlotte N., Simpson, John T., D'Urso, Brian R., and Jenner, Elliot. Superhydrophobic anodized metals and method of making same. United States: N. p., 2018. Web.
Barbier, Charlotte N., Simpson, John T., D'Urso, Brian R., & Jenner, Elliot. Superhydrophobic anodized metals and method of making same. United States.
Barbier, Charlotte N., Simpson, John T., D'Urso, Brian R., and Jenner, Elliot. Tue . "Superhydrophobic anodized metals and method of making same". United States. https://www.osti.gov/servlets/purl/1461529.
@article{osti_1461529,
title = {Superhydrophobic anodized metals and method of making same},
author = {Barbier, Charlotte N. and Simpson, John T. and D'Urso, Brian R. and Jenner, Elliot},
abstractNote = {Methods for producing a superhydrophobic anodized surface including anodizing a surface of a substrate in an anodization acid to form a plurality of pores, etching the surface with an etchant to widen an edge of each of the plurality of pores; repeatedly anodizing the surface in the anodization acid and etching the surface with the etchant until the edges of the plurality of pores overlap to form a plurality of nano-sharp ridges, and coating the surface with a hydrophobic polymer to render the surface superhydrophobic, such that the surface exhibits a contact angle of at least 150 degrees with a drop of water. Articles including a surface having a series of nano-sharp pore ridges defined by a series of pores and a mum thick layer of a hydrophobic polymer on said surface.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {7}
}

Patent:

Save / Share:

Works referenced in this record:

Water-repellent coating: formation of polymeric self-assembled monolayers on nanostructured surfaces
journal, September 2007


Microstructured Hydrophobic Skin for Hydrodynamic Drag Reduction
journal, February 2004


Nanograssed Micropyramidal Architectures for Continuous Dropwise Condensation
journal, September 2011


Direct numerical simulation of turbulent flow over riblets
journal, October 1993


Large-Scale Fabrication of Ordered Nanoporous Alumina Films with Arbitrary Pore Intervals by Critical-Potential Anodization
journal, January 2006


Bubble-induced skin-friction drag reduction and the abrupt transition to air-layer drag reduction
journal, September 2008


Frictional drag reduction with air lubricant over a super-water-repellent surface
journal, December 2000


Controlled pore size, thickness and surface free energy of super-hydrophobic PVDF® and Hyflon®AD membranes
journal, November 2006


Direct numerical simulation of turbulent channel flow with permeable walls
journal, January 2002


Effects of hydrophobic surface on skin-friction drag
journal, July 2004


Laminar drag reduction in microchannels using ultrahydrophobic surfaces
journal, December 2004


Bubble friction drag reduction in a high-Reynolds-number flat-plate turbulent boundary layer
journal, March 2006


Secondary flow and turbulence in a cone-and-plate device
journal, January 1984


Drag reduction fundamentals
journal, July 1975


Antireflection Polymer Surface Using Anodic Porous Alumina Molds with Tapered Holes
journal, April 2007


Effective slip and friction reduction in nanograted superhydrophobic microchannels
journal, August 2006


Large Slip of Aqueous Liquid Flow over a Nanoengineered Superhydrophobic Surface
journal, February 2006


A theoretical prediction of friction drag reduction in turbulent flow by superhydrophobic surfaces
journal, May 2006


Effective slip on textured superhydrophobic surfaces
journal, May 2005


Inclined-wall regular micro-pillar-arrayed surfaces covered entirely with an alumina nanowire forest and their improved superhydrophobicity
journal, June 2011


Direct velocity measurements of the flow past drag-reducing ultrahydrophobic surfaces
journal, January 2005