REDUCED FLUID DRAG ACROSS A SOLID SURFACE WITH A TEXTURED COATING
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United States of America Patent
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Mar 26, 2015
app pub date -
Sep 26, 2013
filing date -
Sep 26, 2013
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Abstract
An article includes a substrate with a coating having asperities such that an average spacing between the asperities is between about 0.01 and about 1.5 micron. An average surface roughness of the coating is up to about 2 microns, and an average porosity of the coating is in the range from about 35% to about 70%. A material to reduce surface energy is disposed on the coating. A method for making such an article and a method for decreasing fluid drag across such an article are also provided.
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