A resin composition for use in a sliding member, which has higher seizing resistance while maintaining abrasion resistance. The sliding resin composition includes: a resin binder; a solid lubricant; and a protecting and reinforcing agent that is harder and brittler than the resin binder. As the protecting and reinforcing agent, aggregates of particles harder than the resin binder are used. The amount of the protecting and reinforcing agent contained is 1 vol. % or more but 20 vol. % or less of the entire sliding resin composition. The particles harder than the resin binder have an average particle diameter of 10 nm or more but 100 nm or less that is smaller than that of the solid lubricant.

An oxide film (170) is formed on a surface of a base material (175) that is a sintered body constituted by an iron-based material. The oxide film (170) includes a first layer (171), a second layer (172), and a third layer (173). The first layer (171) is located on an outermost surface and is constituted by at least fine crystals. The second layer (172) is located under the first layer (171) and contains columnar structures. The third layer (173) contains columnar structures and is provided on the second layer (172) through an interface (174) so as to be located close to the base material (175). The first layer (171) includes a dense layer (171a). The oxide film (170) can exhibit satisfactory abrasion resistance.

An oxide film (170) is formed on a surface of a base material (175) that is a sintered body constituted by an iron-based material. The oxide film (170) includes a first layer (171), a second layer (172), and a third layer (173). The first layer (171) is located on an outermost surface and is constituted by at least fine crystals. The second layer (172) is located under the first layer (171) and contains columnar structures. The third layer (173) contains columnar structures and is provided on the second layer (172) through an interface (174) so as to be located close to the base material (175). The first layer (171) includes a dense layer (171a). The oxide film (170) can exhibit satisfactory abrasion resistance.

A method for coating a surface of a moving part of a vehicle may include a coating preparation process of disposing a screen having a plurality of meshes to be distanced from a surface of the moving part of the vehicle to be coated depending on a predetermined spaced distance; and a coating layer deposition process of forming a coating layer having a pattern having a shape in which a plurality of embossings corresponding to the mesh shape is repeated on the surface of the moving part of the vehicle by a vacuum deposition scheme and forming the coating layer so that the adjacent emboss is connected to each other.

A method for coating a surface of a moving part of a vehicle may include a coating preparation process of disposing a screen having a plurality of meshes to be distanced from a surface of the moving part of the vehicle to be coated depending on a predetermined spaced distance; and a coating layer deposition process of forming a coating layer having a pattern having a shape in which a plurality of embossings corresponding to the mesh shape is repeated on the surface of the moving part of the vehicle by a vacuum deposition scheme and forming the coating layer so that the adjacent emboss is connected to each other.

A lubricant for a medical device to be subjected to gas low temperature sterilization includes an anti-friction material and an ion exchanger.

A strain wave gearing has contact parts which are the portions to be lubricated other than the teeth of an externally toothed gear and an internally toothed gear, the contact parts being respectively lubricated with an inorganic lubricating powder having a lamellar crystal structure. The lubricating powder, during the operation of the strain wave gearing, is crushed between the contact surfaces of each of the contact parts to move and adhere to the contact surfaces, thereby forming thin surface films thereon. Additionally, the powder is thinly spread by pressure and reduced into finer particles to change into a shape which facilitates intrusion into the space between the contact surfaces. By both the fine particles having changed in shape and the surface films, the lubrication of the contact parts is maintained. Neither the fine particles nor the surface films are viscous.

A strain wave gearing has contact parts which are the portions to be lubricated other than the teeth of an externally toothed gear and an internally toothed gear, the contact parts being respectively lubricated with an inorganic lubricating powder having a lamellar crystal structure. The lubricating powder, during the operation of the strain wave gearing, is crushed between the contact surfaces of each of the contact parts to move and adhere to the contact surfaces, thereby forming thin surface films thereon. Additionally, the powder is thinly spread by pressure and reduced into finer particles to change into a shape which facilitates intrusion into the space between the contact surfaces. By both the fine particles having changed in shape and the surface films, the lubrication of the contact parts is maintained. Neither the fine particles nor the surface films are viscous.

A process for making solid lubricants or lubricant additives or lubricant modifiers may include synthesizing two-dimensional (2D) nanoplatelets, nanorods, or nanowires of MoO.sub.3 and WO.sub.3. The process may also include creating hollow hexagonal ZnO nanotubes by refluxing a mixture of zinc nitrate and urea at a predefined temperature or a range of temperatures for a predefined period or periods of time. The process may further include growing the hollow hexagonal ZnO nanotubes around platelets, nanorods, or nanowires of the MoO.sub.3 or WO.sub.3. The process may also include creating a solid lubricant in a core-shell configuration from the hollow hexagonal ZnS nanotubes with an embedded hexagonal core of MoS.sub.2 or WS.sub.2.

A process for making solid lubricants or lubricant additives or lubricant modifiers may include synthesizing two-dimensional (2D) nanoplatelets, nanorods, or nanowires of MoO.sub.3 and WO.sub.3. The process may also include creating hollow hexagonal ZnO nanotubes by refluxing a mixture of zinc nitrate and urea at a predefined temperature or a range of temperatures for a predefined period or periods of time. The process may further include growing the hollow hexagonal ZnO nanotubes around platelets, nanorods, or nanowires of the MoO.sub.3 or WO.sub.3. The process may also include creating a solid lubricant in a core-shell configuration from the hollow hexagonal ZnS nanotubes with an embedded hexagonal core of MoS.sub.2 or WS.sub.2.