The patent's assignee is
News editors obtained the following quote from the background information supplied by the inventors: "Embodiments of the present invention relate generally to nano-lubrication, that is lubrication using nano-materials. More specifically, embodiments of the present invention relate to preparation of surfaces to be lubricated to enhance the effectiveness of intended nano-lubrication.
As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventor's summary information for this patent application: "Embodiments of the present invention may provide textured surfaces to be lubricated, the texturing to enhance the effectiveness of the intended nano-lubrication. The word 'texture' refers to a physical and/or chemical patterning on the surfaces to be lubricated, also referred to herein as the application surface or the substrate. The texturing may make asperities and depressions in the surface to be lubricated with or without chemical functionalization. This texturing may be executed, for example, by chemical etching, laser etching, mechanical machining or other techniques. This texturing may create locations in the lubricated surface to hold or anchor the intended nano-lubricants, to facilitate the creation of a lubricating tribo-film on the application surface when the surface is used under pressure, temperature and other stress factors, and resulting in delivery of multiple chemistries from the nano-lubricant.
"In non-limiting embodiment, a textured surface and a method of making a textured surface according to the present disclosure comprises a surface with textured features and methods of making the textured features. The textured features are adapted to enhance the effectiveness of a nano-particle lubricant. In a non-limiting embodiment the features are formed by one or more processes selected from the group consisting of etching, chemical etching, chemical functionalization, laser etching, laser blasting, sand blasting, physical etching, mechanical etching, top down processes, bottom up processes, chemical texturing, physical texturing, mechanical texturing, stamping, laser texturing, vapor deposition, plasma deposition, electroplating, self assembly, directed assembly, subtractive manufacturing, additive manufacturing, hybrid manufacturing, and other deposition. The textured features may comprise at least one feature selected from the group consisting of pores, waves, striations, channels, protrusions, asperities, depressions, grooves, holes, low points, high points, cracks, low areas, high areas, exposed sandwiched layers, and chemically functional material.
"A nano-particle lubricant is in contact with the textured features of the textured surface in a position to lubricate the surface. In non-limiting embodiments, the nano-particle lubricant comprises at least one member selected from the group consisting of: (i) solid nano-particles, (ii) a layered nano-particle macro-composition, (iii) a bonded plurality of layered nano-particle macro-compositions, (iv) nanoparticles having an open-ended architecture and comprising an organic medium intercalated in the nanoparticle, (v) a nanoparticle inner nucleus, an intermediate layer around the nucleus, and an outer layer intercalated with the nucleus or encapsulating the nucleus and the intermediate layer, and (vi) a plurality of nanoparticle inner nuclei, on each nucleus, an outer layer intercalated with the nucleus or encapsulating the nucleus, the layer with the nucleus forming a layered nanoparticle, and a plurality of bonds, each bond bonded to at least two of the layered nanoparticles, such that each layered nanoparticle is bonded to at least one other of the layered nanoparticles by a bond.
"In a non-limiting embodiment according to the present disclosure, a tribo-film is in contact with the textured features of the textured surface in a position to lubricate the surface. In another non-limiting embodiment according to the present disclosure, the tribo-film comprises at least one of a phosphorus-containing compound, a phosphide, a boron containing compound, and a boride. In still another non-limiting embodiment, the tribo-film comprises at least a component of the nano-particle lubricant. According to non-limiting aspects of the present disclosure, the size of one or more of the textured features is a multiple of the size of a unit of the nano-particle lubricant, and the surface comprises a substrate with a layer of material deposited over the substrate, where the textured features expose parts of the substrate.
BRIEF DESCRIPTION OF THE DRAWINGS
"Embodiments of the present invention are described herein, by way of example, in conjunction with the following figures.
"FIG. 1 is a schematic diagram illustrating a textured surface and a layer of nano-lubricants located on the surface.
"FIG. 2 is a schematic diagram illustrating a nano-lubricant.
"FIG. 3 is a schematic diagram illustrating two textured surfaces approaching frictional contact, each textured surface having a layer of nano-lubricants located on the surface.
"FIG. 4 is a schematic diagram illustrating two textured surfaces approaching frictional contact and showing plastic deformation of nano-lubricants located on the surfaces.
"FIG. 5 is a schematic diagram illustrating two textured surfaces in frictional contact with a tribofilm formed from deformed nano-lubricants located between the surfaces.
"FIG. 6 shows an embodiment with materials deposited on a substrate, and then etched exposing portions of the substrate."
For additional information on this patent application, see: Malshe,
Keywords for this news article include: Lubricants, Nanoparticle,
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