Methods for making a tribological bearing wear surface for a compressor component are provided. Such methods involve semi-solid metal casting, where an admixture of solid lubricant particles and a metal alloy material is heated to melt the metal alloy material, while the lubricant particles remain in a solid phase. The alloy material and solid lubricant have substantially different densities. The metal alloy material may be a copper, iron, or aluminum alloy, for example. The method further comprises mixing and cooling the admixture to form a semi-solid slurry admixture. Next, the method comprises introducing the semi-solid slurry admixture into a die. Finally, the semi-solid slurry admixture in the die is solidified to form a solid component having the solid lubricant particles homogenously distributed within a metal alloy material matrix, thus forming a metal matrix composite. Compressor components made from such methods are also provided.

A bearing for a hinge in a hinged raked aircraft wing tip includes an outer member that has a concave inner surface and an inner member that has first and second inner segments. Each of the first and second inner segments has a base that has a bearing section extending therefrom. The bearing sections together form a convex outer surface that is complementary in shape to the concave inner surface. A preload feature is positioned between and engages a portion of the bearing sections. A lubricous liner is positioned between the concave inner surface and the convex outer surface. The bearing sections are positioned in the outer member to compress the preload feature to limit axial movement between the outer and inner members to a predetermined magnitude. The preload feature flexes outward as a result of wear to the liner to maintain the axial movement to the predetermined magnitude.

Embodiments disclosed herein are directed to bearing assemblies that include integrated lubrication, bearing apparatuses including such bearing assemblies, and related methods. For example, a lubricated bearing assembly may include a lubricant that may lubricate the bearing surface thereof during operation of the lubricated bearing assembly and/or bearing apparatus including the lubricated bearing assembly.

A surface treated bearing component and a bearing (10) including such bearing component. The bearing component may include a peripheral surface adapted for contacting a rolling body (16). A mass adjoins the surface. The surface has a plurality of visible overlapping striped regions (26, 28) generally devoid of any surface erosion. The surface may have a graphitic layer (36) formed in situ thereon. The mass portion may include a first region (30) having a depth (e.g., of about 50 to about 200 micrometers) and a first carbon content. The mass may include a second region (32) generally adjoining the first region having a depth (e.g., about 50 to about 100 micrometers) and a second carbon content less than the carbon content of the first region. A third region (34) generally adjoins the second region and has a third carbon content less than the carbon content of the first and the second region. The third region generally will have the composition and microstructure of the bulk bearing component as it existed before any surface treatment.

Apparatuses (10) for and methods of imparting a laser surface treatment to an exposed outer surface (12) of a rolling bearing component having a carbon-containing coating thereon. The apparatus (10) includes a support housing structure (16). A rolling bearing carrier has a surface adapted to receive and engage at least one ring of a rolling bearing. A motor (22) mounted to the support housing structure (16) is coupled with the carrier and adapted for rotatably driving the carrier. A laser beam emitter aims a laser beam at an exposed surface (12) of the rolling bearing component. The carrier is rotated while the rolling bearing component is in generally opposing relationship with the laser beam so that energy from the beam causes at least a portion of the coating on the bearing component to volatilize and be removed while also causing at least a portion of a carbon content of the coating to diffuse into the bearing component.

A sliding member having a coating film and a method for forming a coating film, which can realize both of improvement in lubricity of the coating film by using a solid lubricant and improvement in adhesiveness of the coating film to a ground, and a method for forming a coating film.

A rotating assembly adapted for use in turbines and pumps is provided. The rotating assembly includes a shroud that rotates around a central axis and a disk seated in a recess in the shroud so that the disk rotates with the shroud, the disk being oriented perpendicular to the central axis. The rotating assembly also includes a stationary element in which at least one surface of the disk contacts a fluid so that when the fluid flows under pressure, the surface of the disk resists the generation of drag between the surface and the stationary element of the rotating assembly. A shroud is provided that includes a circular recess with a cavity on an outer perimeter extending away from the fixed assembly. A method of manufacturing a rotating assembly is provided.

Provided is a sliding member having: a back metal layer; and a sliding layer on the back metal layer. The sliding layer includes a porous sintered layer and a resin composition. The sintered layer includes NiP alloy phase and granular steel phase made of a carbon steel including 0.3-1.3 mass % of carbon and having a structure of: ferrite phase; and perlite phase, or perlite phase and cementite phase. The NiP alloy phase binds the steel phases with one another and/or binds the steel phases with the back metal layer. The steel phase includes a low perlite phase part in a surface. The low perlite phase part has an area ratio of the perlite phase lowered by 50% or more compared with a total area ratio of the perlite phase and the cementite phase at a central part of the steel phase when observed in a cross-section.

A bearing for a hinge in a hinged raked aircraft wing tip includes an outer member that has a concave inner surface and an inner member that has first and second inner segments. Each of the first and second inner segments has a base that has a bearing section extending therefrom. The bearing sections together form a convex outer surface that is complementary in shape to the concave inner surface. A preload feature is positioned between and engages a portion of the bearing sections. A lubricous liner is positioned between the concave inner surface and the convex outer surface. The bearing sections are positioned in the outer member to compress the preload feature to limit axial movement between the outer and inner members to a predetermined magnitude. The preload feature flexes outward as a result of wear to the liner to maintain the axial movement to the predetermined magnitude.

Embodiments disclosed herein are directed to bearing assemblies that include integrated lubrication, bearing apparatuses including such bearing assemblies, and related methods. For example, a lubricated bearing assembly may include a lubricant that may lubricate the bearing surface thereof during operation of the lubricated bearing assembly and/or bearing apparatus including the lubricated bearing assembly.