A sliding member includes, on a surface of a metal substrate, a surface-treated layer including a zinc-electroplated layer, a chemical conversion-treated layer, and a topcoat layer sequentially stacked on the metal substrate. The chemical conversion-treated layer includes chromium and oxygen. The topcoat layer includes at least one material selected from the group consisting of a silica compound, acrylic resin, polyurethane resin, epoxy resin, phenol resin, and melamine resin. A method of manufacturing the sliding member includes a step of forming, on a surface of the chemical conversion-treated layer, the topcoat layer including at least one material selected from the group consisting of a silica compound, acrylic resin, polyurethane resin, epoxy resin, phenol resin, and melamine resin.

A rolling bearing having an inner raceway and an outer raceway and a plurality of rolling elements arranged therebetween. The rolling bearing is media-lubricated or oil-free lubricated. The lubricant forms an elasto-hydrodynamic lubricant film between the rolling elements and the raceways. At first use of the rolling bearing, at least one surface of the rolling bearing is coated with a protective fluid, preferably an oil-based preservative fluid. Also, a refrigerant compressor having such a rolling bearing.

Disclosed herein a bearing that comprises a base, made of a metallic base material. The base comprises a cylindrical outer surface, a cylindrical inner surface that is opposite the cylindrical outer surface, and a central channel defined by the cylindrical inner surface and extending through the base. The bearing also comprises a selective transfer material embedded in the base. The selective transfer material is different than the metallic base material and is configured to release from the base in response to frictionally-induced pressure acting on the base.

A bearing providing a plurality of rolling elements and at least one raceway for the rolling elements. The at least one raceway or the rolling elements include a tungsten carbide coating. In some embodiments, the tungsten carbide coating may be a Nano-structured tungsten carbide coating. In some embodiments, the at least one raceway or the rolling elements may comprise a steel substrate covered with the tungsten carbide coating. Embodiments also relate to a method for producing a bearing. The method includes coating a plurality of rolling elements or at least one raceway for the rolling elements with a tungsten carbide coating. In some embodiments, the tungsten carbide coating may be a Nano-structured tungsten carbide coating.

Disclosed herein is a sliding member for an internal-combustion engine of an automobile or the like. The sliding member has excellent sliding properties due to high oleophilicity of its sliding surface achieved by adjusting the surface texture of a resin layer forming the sliding surface, which makes it possible to effectively prevent wear or seizure of the sliding member and a counterpart sliding member thereof. The sliding member includes a resin layer provided on a surface of a base material, in which the resin layer has a surface roughness of 1.05 or more, preferably 1.07 or more. The mean spacing (s) between local peaks of the resin layer may be in the range of 2 m or more but 12 m or less, but may be preferably in the range of 2 m or more but 10 m or less. Further, the mean height (Rc) of the resin layer may be in the range of 0.5 m or more but 5.0 m or less, but may be preferably in the range of 0.5 m or more but 3.0 m or less.

A Hybrid rolling bearing includes an inner raceway and an outer raceway and a plurality of rolling elements arranged therebetween. The outer raceway and the inner raceway are made from bearing steel, having a first surface RMS roughness R.sub.q1. The rolling elements are made from a ceramic material and have second surface RMS roughnesses R.sub.q2,i. At least one of the rolling elements has an increased surface RMS roughness R.sub.q2,N, which is significantly higher than the RMS roughnesses R.sub.q2,i, of the remaining rolling elements. The hybrid rolling bearing can be installed within a refrigerant compressor.

A Hybrid ball bearing including an outer raceway, an inner raceway, and a plurality of balls arranged between the inner raceway and the outer raceway. The outer raceway and the inner raceway are made from bearing steel and have a first surface RMS roughness R.sub.q1. At least one ball of the plurality of balls is made from a ceramic material and has a second surface RMS roughness R.sub.q2. In a mint condition, the roughness of the raceways R.sub.q1 is 2 to 5 times higher than the roughness R.sub.q2 of the at least one ball, as well as a refrigerant compressor comprising such a hybrid ball bearing.

A sliding component may include an overlay. The overlay may include graphene platelets functionalised with at least one of O functional groups and F functional groups within a matrix of at least one of a polymeric material and a plastics material.

A sliding bearing may include a backing layer and a sintered lining layer. The lining layer may include a composition of 0.1 to 10 percent by weight carbon nanostructures embedded in a copper-based matrix. The sliding bearing may include, but is not limited to, at least one of a bearing bush, a bearing shell, and a thrust washer.

The invention relates to a sliding element having a coating, which comprises at least one functional layer, said functional layer having a mixed oxide-matrix and in the mixed-oxide matrix and solid lubricant particles and/or hard particles are embedded in the mixed oxide-matrix.