Abstract: An object of the present invention is that in a sliding member whose substrate is improved in sliding characteristics by a coating layer comprising a solid lubricant, the coating layer is obtained as one having a low coefficient of friction and an excellent wear resistance. In the present invention, the coating layer 7 has a structure formed by laminating solid lubricant plate crystal grains 3, and contains not more than 10 mass % of a resin for binder 8 for bonding the solid lubricant plate crystal grains 3, and the lubricant plate crystal grains have a crystal structure formed by piling (00l) planes (wherein l is an integer of not less than 1) in parallel, the index of orientation of the (00l) planes being not less than 90% at least on the sliding surface.

Abstract: The present invention is intended to provide a sliding member which exhibits an excellent anti-seizure property even under starved lubricant conditions. In the present invention, there is provided a sliding member with a structure, in which a coating layer having a sliding surface is adhered to the surface of the base material, wherein the coating layer does not contain a resin binder but has solid lubricant plate crystal particles laminated therein, wherein these solid lubricant plate crystal particles have a lamellar crystal structure in which (001) planes are stacked in parallel, and at least in the sliding surface, the orientation index of the (001) plane of the solid lubricant plate crystal particles is 90% or more.

Abstract: Disclosed is a sliding member having a bearing alloy layer, an intermediate layer of Ni or a Ni alloy formed on the bearing alloy layer, and an overlay layer of a Sn alloy containing Cu formed on the intermediate layer. There exist Sn—Cu compounds in the overlay layer, which protrudently extend from the intermediate layer. The hard Sn—Cu compounds contribute to the overlay layer in improving fatigue resistance property. A soft Sn matrix being rich in an outer surface region of the overlay layer is responsible for keeping good conformability to have excellent anti-seizure property.

Abstract: The invention provides a sliding member including a plurality of holes formed on a sliding surface thereof, which sliding surface is adapted to slide on a mating member, at least one of the holes having an enlarged portion in at least a portion between an opening end and a bottom end thereof, the enlarged portion being larger than the opening end on the sliding surface.

Abstract: A sliding member has a coating layer deposited on a base material through an intermediate layer, wherein the intermediate layer is formed of a lead-free metal, and the coating layer is formed of Bi or a lead-free Bi alloy; and wherein a grain in the intermediate layer becomes gradually large toward a coating layer side from a base material side, and a grain in the coating layer forms a columnar grain of which the major axis directs toward the surface of the coating layer from the intermediate layer side. Thus formed configuration improves a bonding strength between the base material and the coating layer owing to the intermediate layer, and has the grain of the coating layer formed into a desirable shape for bearing a load from an opposite material to improve fatigue resistance.

Abstract: A sliding member includes a substrate, a porous layer provided on the surface of the substrate and a sliding layer with which the porous layer is impregnated and coated. The sliding layer contains polybenzimidazole, 1–70 vol % of a solid lubricant and 0.1–10 vol % of hard particles.

Abstract: A method of manufacturing a multilayer material including a back metal and a metal plate made from a metal differing from the back metal is disclosed. The method includes heating powder of the metal formed into the metal plate in a reducing atmosphere so that an oxide on a surface of the metal powder is deoxidized, and spreading the deoxidized metal powder onto the back metal and irradiating laser beam having an energy density of 10 to 100 kW/cm2 onto the metal powder spread on the back metal so that the metal powder is partially heated to be melted, while the laser beam is moved relative to the spread metal powder, and quenching the melted part of the metal powder at an underside of the back metal so that the melted part is rapidly solidified, whereupon the multilayer material has a dendritic structure in which the metal plate extends substantially vertically from a surface of the back metal, and the dendritic structure has a crystal grain size equal to or smaller than 0.

Abstract: A copper base alloy suitable for use as a material for a sliding member used under severe sliding conditions such as a floating bush bearing of a turbocharger used in automobiles is disclosed. The alloy comprises, by mass %, 15 to 25% Zn, 4.2 to 10% Di, 2 to 7% Mn, 1 to 3% Si and balance of Cu and unavoidable impurities, the alloy having a structure of which matrix is composed of ?-single phase, wherein a eutectic structure of the ?-phase and an Mn—Si compound and Bi particle are distributed throughout the matrix.

Abstract: A plain bearing is provided which has an Sn-and-Si-rich layer formed of an Al alloy containing Sn and Si, and a base material which does not contain Sn. The Sn-and-Si-rich layer have the sliding surface having an area ratio of Sn phase grains in a range of 6 to 40% and that of Si phase grains in a range of 5 to 25%.

Abstract: In a slide member such as a slide bearing, the invention can make a height of a bank portion around an oil keeping concave portion small, whereby it is possible to improve an initial conformability and improve an anti-seizure performance. A plurality of holes are formed on a slide surface with respect to an opposing member by a fiber laser apparatus. At this time, in the case that a height of a bank portion generated in the periphery of the concave portions in accordance with the laser processing so as to bulge from a slide surface is set to t, and a depth of the concave portions from the slide surface is set to h, an energy density of the laser beam is adjusted such that a value t is equal to or less than 3 ?m, and a rate t/h is between 0.1 and 0.5.

Abstract: A plain bearing comprising a backing alloy made of copper alloy or aluminum alloy, a coat layer of synthetic resin formed on the surface of a backing alloy, and a thin film of polytetrafluoroethylene formed on the surface of the coat layer has a lower coefficient friction, improved conformability and distinguished sliding characteristics.

Abstract: Disclosed is a sliding member having a bearing alloy layer, an intermediate layer of Ni or a Ni alloy formed on the bearing alloy layer, and an overlay layer of a Sn alloy containing Cu formed on the intermediate layer. There exist Sn—Cu compounds in the overlay layer, which protrudently extend from the intermediate layer. The hard Sn—Cu compounds contribute to the overlay layer in improving fatigue resistance property. A soft Sn matrix being rich in an outer surface region of the overlay layer is responsible for keeping good conformability to have excellent anti-seizure property.

Abstract: A sliding member has a sliding alloy layer, an intermediate layer of Ni or a Ni alloy formed on the sliding alloy layer, and a soft layer of Sn or a Sn alloy formed on the intermediate layer. A recess is formed on the sliding side surface of the sliding alloy layer. The intermediate layer is formed on the inner surface of the recess. The sliding member is subjected to a heat treatment, whereby there are formed intermetallic compounds in the soft layer, which extend protrudently from the intermediate layer.

Abstract: In order to improve conformability of a sliding surface of a sliding member in an early state of sliding, there is provided a sliding member in which a plurality of holes are formed on a sliding surface, and the diameters (or the opening area) of the holes on the sliding surface are arranged so as to become gradually large as it gets closer to both ends in an axial direction from the center side in the axial direction. This feature decreases the pressurized area as it gets closer to the ends of the sliding surface so that it wears at an early stage, whereby a conformed surface following the deflection of a mating member is provided.

Abstract: The invention provides a sliding member including a plurality of holes formed on a sliding surface thereof, which sliding surface is adapted to slide on a mating member, at least one of the holes having an enlarged portion in at least a portion between an opening end and a bottom end thereof, the enlarged portion being larger than the opening end on the sliding surface.

Abstract: There is provided a multi-layer sliding material, comprising a back metal layer, a bearing alloy layer bonded onto the back metal layer, and a coating layer bonded onto the bearing alloy layer, said coating layer being made of an alloy consisting of 20 to 80 mass % Pb, at least one optional element not more than 10 mass % in total selected from the group consisting of In, Sb, Sn and Ag, and the balance Cu and incidental impurities. The material may further comprise a conforming layer made of an alloy containing not less than 80 mass % Pb.

Abstract: There are provided a copper-based sintered sliding material comprising a steel back metal layer, and a sintered layer made of Cu or a Cu-based alloy which is bonded onto the steel back metal layer, the steel back metal layer having a hardness not less than 160 Hv and an elongation not less than 10%, the sintered layer having a hardness not more than 130 Hv and crystal grains each provided with a grain size not more than 45 &mgr;m, a method of producing the sliding material, and a sliding bearing formed of the sliding material.

Abstract: A copper base alloy suitable for use as a material for a sliding member used under severe sliding conditions such as a floating bush bearing of a turbocharger used in automobiles is disclosed. The alloy consists of, by mass %, 15 to 25% Zn, 4.2 to 10% Bi, 2 to 7% Mn, 1 to 3% Si and balance of Cu and unavoidable impurities, the alloy having a structure of which matrix is composed of &agr;-single phase, wherein a eutectic structure of the &agr;-phase and an Mn—Si compound and Bi particle are distributed throughout the matrix.

Abstract: A multilayer material comprising a backing material (10) and a obverse material (12) made of a metal different from the backing material, said obverse material being bonded to the backing material, said obverse material having a rapidly cooled dendrite structure extended substantially vertically to the backing material, said dendrite structure having a grain size not more than 0.02 mm in a cutting plane in parallel to the backing material and/or a dendrite arm spacing not more than 0.02 mm in a cutting plane vertical to the backing material.

Abstract: The present invention provides a plain bearing comprising a substrate and a sliding layer provided on the surface of the substrate which is improved in bearing performances, particularly, wear resistance. According to the present invention, the sliding layer 2 provided on the surface of the substrate 1 comprising a steal material or stainless steal contains polybenzimidazole (PBI) and 1-70 vol% of a solid lubricant. PBI is superior in heat resistance to thermosetting resins (PAI, PI, EP resins) and, besides, high in material strength, and thus wear resistance and anti-seizure property can be improved.