Abstract:
A biphasic nanoporous vitreous carbon material with a cementitious morphology characterized by presence of non-round porosity, having superior hardness and tribological properties, as useful for high wear-force applications. The biphasic nanoporous vitreous carbon material is produced by firing, under inert atmosphere, of particulate vitrified carbon in a composition containing (i) a precursor resin that is curable and pyrolyzable to form vitreous carbon and, optionally, (ii) addition of one or more of the following: solid lubricant, such as graphite, boron nitride, or molybdenum disulfide; a heat-resistant fiber reinforcement, such as copper, bronze, iron alloy, graphite, alumina, silica, or silicon carbide; or one or more substances to improve electrical conductivity, such as dendritic copper powder, copper 'felt' or graphite flake, to produce a superior vitreous carbon that is useful alone or as a continuous phase in reinforced composites, in relation to conventional glassy carbon materials.
Abstract:
A threaded joint for steel pipe formed of a pin and a box having a contact surface including threaded parts and a non-threaded metal contact part and capable of stably assuring a seizure resistance and an airtightness without applying compound grease thereto, wherein a solid lubricating film formed with lubricating powder (example: molybdenum disulfide) and organic or inorganic binder is formed on the contact surface of at least one of the pin and box, the ratio of the area occupied by the secondary particles of 15 to 60νm in equi-area equivalent diameter of the lubricating powder in the cross section of the solid lubricating film in thickness direction is 5 to 90%, and fiber-like filler (example: inorganic substance whisker) in addition to the lubricating powder is mixed into the solid lubricating film at the mass ratio of the fiber-like filler to binder of 0.01 to 0.5, whereby, particularly, the seizure resistance at high temperatures can be improved.
Abstract:
The present invention relates to improved metallurgical powder compositions that incorporate solid lubricants, methods for preparing and using the same, and methods of making compacted parts. The solid lubricants contain functionalized polyalkylene lubricants substituted with functional groups selected from the group consisting of a phosphate group, phosphite group, hypophosphate, hypophosphite, polyphosphate, thiophosphate, dithiophosphate, thiocarbamate, dithiocarbamate, borate, thiosulfate, sulfate group, or sulfonate group.
Abstract:
An antifriction coating comprises a lubricant, a corrosion inhibitor, and a solvent, wherein the lubricant comprises a mixture of phenolic resin, epoxy resin, polyvinylbutyral resin and polyolefin wax, and the corrosion inhibitor comprises aluminium particles, zinc particles and a metal phosphate. Substrates are preferably pretreated by a phosphating process prior to coating with the antifriction coating. The antifriction coating is useful for coating substrates such as nuts, bolts and other fasteners, door, bonnet and boot lock parts, hinges, door stoppers, window guides, seat belt components, brake rotors and drums, and other transportation industry related parts.
Abstract:
According to the method of the invention, first a paste is produced from a plastics dispersion and fillers in order to form the plastics sliding layer. This paste is free from organic solvents and is applied to a sintered porous metal layer. The resultant multi-layer material is then sintered. Since organic solvents are not used, the risks to health and the risk of fire are considerably reduced. Furthermore, the composite materials produced according to the invention have exceptional resistance to cavitation. In addition to conventional fields of application relative to lubrication-free articles, such as bearings, these composite materials can therefore also be used in gear pumps and shock absorbers.
Abstract:
1a - "MULTI-FUNCTION PROTECTIVE COATING FOR ZINC COATED STEEL SURFACES AND ITS ALLOYS" including zinc/iron, zinc/nickel, zinc/cobalt, zinc/aluminium and any metal surface, which product is characterized by containing: Copolymers of the group acrylic, vinylacrylic, acrylstirene, and having carboxilic radicals from acrylic and/or methacrylic acids, and Ia = 30-60 mg KOH. The water reducible copolymers containing alcohols and/or glycols and Lubricity additives, of solid nature, in a water dispersión, such as natural or synthetic waxes, graphite, molibdenum sulphide, at a ratio from 1 to 10%.