A multi-layer sliding bearing includes a sliding layer having a surface for contacting a component which is to be mounted. The sliding layer is made from a tin-based alloy with tin as the main alloy element and the sliding layer has on the surface, at least in sections, an oxidic subcoating in which the proportion of tin oxide(s) is at least 50% in weight.

To provide a technology with which cleavage fracture to a sliding surface can be prevented. A sliding member and a sliding bearing include a base layer and a cover layer of a cover material having a sliding surface for a counterpart material, the cover layer being formed on the base layer. The cover layer has a crystalline structure of the cover material including crystalline grains having a grain diameter of 3 m or more and 7 m or less.

In a method, in which a plain bearing alloy layer is bonded to a surface of a backing steel sheet, and, a Bi-based overlay layer is then deposited on the plain bearing alloy layer by electroplating, replacement of Bi with the backing steel sheet and deposition of Bi on the backing steel sheet are prevented. Prior to the step of electroplating of the Bi-based overlay layer, the following metals and the like are formed on at least the back surface of the backing steel sheet. An electrochemically more noble metal than Bi, an electrochemically more base metal than Bi and capable of forming a passivation state, or resin.

In a method, in which a plain bearing alloy layer is bonded to a surface of a backing steel sheet, and, a Bi-based overlay layer is then deposited on the plain bearing alloy layer by electroplating, replacement of Bi with the backing steel sheet and deposition of Bi on the backing steel sheet are prevented. Prior to the step of electroplating of the Bi-based overlay layer, the following metals and the like are formed on at least the back surface of the backing steel sheet. An electrochemically more noble metal than Bi, an electrochemically more base metal than Bi and capable of forming a passivation state, or resin.

A thrust washer for a sliding bearing may include a thrust washer substrate having an axial face. The thrust washer may also have a polymer layer of profiled thickness on the axial face of the substrate. The profiled polymer layer may be provided with at least one oil distribution groove.

A sliding element with one substrate and at least one layer of a sliding layer material applied to the substrate is described. The sliding layer material can consist of a sliding coating with at least one cross-linkable bonding agent or at least one high-melting thermoplastic material or which consists of a material with a matrix of at least one high-melting thermoplastic material or at least one duroplastic material. This sliding layer material contains Fe.sub.2O.sub.3 with a preferred proportion 0.1 to 15% by volume.

The invention relates to a multi-layer sliding bearing (1) comprising a sliding layer (3) having a surface for contacting a component which is to be mounted. Said sliding layer (3) is made from a tin-based alloy with tin as the main alloy element and the sliding layer (3) has on the surface, at least in sections, an oxidic subcoating (6) in which the proportion of tin oxide(s) is at least 50% in wt.

A sliding member is capable of moving relative to a counterpart and includes a substrate and an amorphous carbon film which is provided on the substrate. The amorphous carbon film has a nitrogen content of 2 at % to 11 at % and a surface hardness in a range of 25 GPa to 80 GPa.

An insulated bearing includes an outer ring, a plurality of rolling elements, a first aluminum insulating cap, and a second aluminum insulating cap. The outer ring has an inner rolling surface and an outer spiral groove, and the plurality of rolling elements are in rolling contact with the inner rolling surface. The first aluminum insulating cap screwed onto the outer ring from a first axial end. The first aluminum insulating cap has a first inner spiral, complementary to the outer spiral groove. The second aluminum insulating cap is screwed onto the outer ring from a second axial end, opposite the first axial end. The second aluminum insulating cap has a second inner spiral, complementary to the outer spiral groove.

Metal-based ceramic composite coatings and related devices, assemblies, and methods include monocrystalline superhard particles dispersed in a metal matrix disposed on at least one wear surface of a component of an oil and gas well assembly, system, or device.