Repellent coatings comprising sintered particles and lubricant, articles & method

Abstract

Method of making an article are described comprising providing a substrate and forming a surface treated porous layer on a surface of the substrate. The porous layer comprises sintered inorganic oxide particles. A surface of the porous layer comprises a hydrophobic layer. The method further comprises impregnating a lubricant into pores of the surface treated porous layer. Also described are articles, comprising (a) a substrate; (b) a surface treated porous layer disposed on a surface of the substrate, wherein the surface treated porous layer comprises a plurality of sintered inorganic oxide particles arranged to form a porous three-dimensional network, and a hydrophobic layer disposed on a surface of the porous three-dimensional network, and (c) a lubricant impregnated in pores of the surface treated porous layer.

Dependencies are inferred from the claim text.