Abstract:
An article having a multiphase composite lubricant coating of a hard refractory matrix phase of titanium nitride dispersed with particles of a solid lubricating phase of molybdenum disulfide is prepared by heating the article to temperatures between 350.degree. and 850.degree. C. in a reaction vessel at a reduced pressure and passing a gaseous mixture of Ti((CH.sub.3).sub.2 N).sub.4, MoF.sub.6, H.sub.2 S and NH.sub.3 over the heated article forming a multiphase composite lubricant coating on the article.
Abstract:
Lubricant composition for use on workpieces in the hot forming of metals, which contains: (a.sub.1) 0 to 80 percent by weight of a glass powder, (a.sub.2) 0 to 50 percent by weight of a glass frit whereby the content of at least one component (a.sub.1) or (a.sub.2) in the lubricant composition is not 0 percent by weight, (b) 10 to 25 percent by weight of natural or synthetic graphite, (c) 5 to 20 percent by weight of one or more alkali metal silicates of the general formula Me.sub.2 O.n SiO.sub.2, where Me is lithium, potassium or sodium and n is a number between 1 and 4, (d) 1 to 6 percent by weight of a water-soluble sodium polymetaphosphate, (e) 0 to 3 percent by weight of a water-insoluble sodium polymetaphosphate,(f) 0.5 to 4 percent by weight of a thickener, and (g) 0 to 1 percent by weight of borax.
Abstract:
The present invention concerns a surface coating sliding member made of rubber or plastic applied with a coating of excellent durability and high sliding property, in which the coating contains a solid lubricant such as molybdenum disulfide and a resin matrix, wherein the resin matrix comprises a fluoro-olefin vinyl ether polymer resin and/or fluoro-olefin vinyl ether vinyl ester copolymer.
Abstract:
A recirculating powder lubricant delivery system having improved oxidative stability and a lubricant therefor where the lubricant is a solid lubricant selected from a group of molybdenum disulfide, graphite and graphite fluoride, and wherein the solid lubricant is microencapsulated from an aqueous suspension of an alkali metal silicate containing a water soluble phosphate.
Abstract:
A solid lubricating composition useful for lubricating the flanges of railcar wheels and rails and for other similar applications. The lubricant composition comprises from about 16% to about 25% by weight of a polymeric carrier, from about 49% to about 63% of a lubricating oil, from about 10% to about 16% of a solid lubricating powder, and from about 6% to about 16% of a surface active agent, all percentages by weight of the total composition. The solid lubricant composition is mixed and introduced into a screw type extruder wherein it is heated and extruded through a die into a waterbath, forming an elastic rod or strand. The lubricant composition is applied to a surface to be lubricated by rubbing it onto the surface in a thin film. The surface active agent enhances the attachment and embedment of the dry lubricating powder into the surface being lubricated, the lubricant composition serving to reduce both wear and friction between contacting surfaces lubricated thereby.
Abstract:
Improved lubrication of tools for hot working rare earth-transition metal alloy particles is provided by suitably applied glass or glass/graphite lubricants.
Abstract:
The application of carbon fluoride chloride in dry lubricant compositions is disclosed. The material offers a substantial improvement in lubricating properties over prior art carbon fluoride dry lubricants.The improved lubricant is comprised of carbon fluoride chloride of the general formula (C.sub.y F.sub.x Cl.sub.z).sub.n wherein y is 1 or 2, x is greater than 0 to 1.2, z is 0.1 and n defines an infinitely large two dimensional array of repeating units occurring in this molecule of high molecular weight. The resulting lubricant has improved lubricating properties over graphite, MoS.sub.2 and carbon monofluoride.
Abstract:
The invention relates to a hydraulically-operating shock and vibration absorber or damper, having a cylinder closed at one end, a piston slidable within the cylinder, the piston being connected with a hollow piston rod extending out of the open end of the cylinder. The interior of the piston rod and the cylinder define a chamber filled with an incompressible damping fluid. A space is defined in the piston rod separated from the chamber by a slidable separating piston. The space contains a compressible agent. The damping fluid is pressed out of one portion the chamber, through the control port, into another portion when the shock absorber is under load. The compressible damping agent is air or gas under normal pressure or else pressurized. The imcompressible damping fluid consists of a non-Newtonian, permanently plastic, homogeneous paste of high heat-conducting capacity composed of graphite, a wetting agent, intrinsically viscous agent and polyglycol ether, polyglycol ester and/or a saturated, aromatic or aliphatic ester of caboxylic acid. Into the opening of the piston, a control pin extends which increases or decreases the cross section of the opening when the piston moves in and out.
Abstract:
A dry gas seal assembly for use with a rotating machine that includes a rotating shaft, the seal assembly comprises a seal face bears a solid coating comprising molybdenum disulfide, graphene oxide, and optionally polydopamine, preferably wherein the graphene oxide to molybdenum disulfide ratio is 8:10 to 10:8. A method for making a dry gas seal assembly comprises coating a homogeneous dispersion of graphene oxide and molybdenum disulfide on a seal face.