Daido Metal Company Ltd.

Erina Yasuda

Kenji Nimura

Yuma Haneda

Shigeru Inami

Hiroki Kobayakawa

Tetsuya Ogawa

Manabu Izumida

Tomoyasu Shiroya

Na Li

A sliding member of the present invention includes a resin overlay layer containing an additive, in which the additive contains an oleophobic resin made of a fluorine resin and/or a silicon resin, and an appropriate amount of the oleophobic resin is uniformly dispersed on a sliding surface of the resin overlay layer. According to the sliding member, oil repellency can be imparted to the sliding surface of the resin overlay layer.

Sliding member

A sliding member includes a resin overlay layer on a sliding-surface side of a bearing alloy layer. The resin layer includes a resin binder and 20% by volume or more of solid lubricant particles with an anisotropic shape dispersed in the resin binder. The sliding surface is located at 0° and has a virtual axis perpendicular to the sliding surface at 90°. An angle θ is formed by a straight line and a major axis of the particles. The total number of the particles in a observation region is N. A rate R1=N1/N of the number N1 of first particles at the angle θ of 70°≤θ≤90° from among the particles is 3%≤R1≤20%, and a rate R2=N2/N of the number N2 of second particles with the angle θ being θ≤20° is 35%≤R2≤65%.

A sliding member including: a soft metal layer formed by stacking a crystal of soft metal, in which a coarse crystal is exposed on a surface of the soft metal layer, the coarse crystal has a particle length of 1.5 μm or more in a plane direction of the surface, and a distribution proportion of the coarse crystal is 5 to 50%, wherein the distribution proportion is a proportion of a circumscribed rectangle in a unit length of a virtual straight line, the circumscribed rectangle is applied to the coarse crystal appearing in a cross section of the soft metal layer, and the virtual straight line passing through the circumscribed rectangles in the cross section and parallel to a surface reference line of the soft metal layer is formed, an upper side of the circumscribed rectangle is parallel to the surface reference line of the soft metal layer, and the surface reference line is an average height of the surface of the soft metal layer appearing in the cross section.

Sliding member and method for producing same

A sliding member includes a resin overlay layer on a sliding surface side coming into sliding contact with a mating member. The resin overlay layer has a surface roughness parameter Rk satisfying 0.4&#x2264;Rk&#x2264;1.2, and a surface area ratio S=S2/S1 calculated when an area of an arbitrary measurement field of view is designated by S1 and a surface area of the measurement field of view is designated by S2 satisfies 2.5&#x2264;S&#x2264;4.5.

A sliding member includes an overlay layer made of a resin on a side of a sliding surface of a bearing alloy layer. When a valley void volume Vvv (&#x3bc;m/&#x3bc;m) in the sliding surface of the overlay layer is defined as Vv1, Vv1 is in a range of 0.015&#x2264;Vv1&#x2264;0.200.

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 &#x3bc;m or more but 12 &#x3bc;m or less, but may be preferably in the range of 2 &#x3bc;m or more but 10 &#x3bc;m or less. Further, the mean height (Rc) of the resin layer may be in the range of 0.5 &#x3bc;m or more but 5.0 &#x3bc;m or less, but may be preferably in the range of 0.5 &#x3bc;m or more but 3.0 &#x3bc;m or less.

A sliding member includes a bearing alloy layer, a solid lubricant layer, particles and a covering portion. The solid lubricant layer is provided on a sliding surface side of the bearing alloy layer and is deposited on the bearing alloy layer. The particles form the solid lubricant layer and are made of metal sulfide. The covering portion is provided over outermost surfaces of the particles on the sliding surface side and are made of metal oxide including the same metal element as a metal element constituting the particles.

Sliding member and bearing device using the same

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.

Sliding resin composition, and sliding member

Disclosed herein is a sliding member that has a coating layer serving as a sliding surface thereof so that even when foreign matter enters between the coating layer and a partner member, smoothness between them is maintained to prevent the occurrence of seizing. When the coating layer has an elastic recovery ratio of less than 60%, foreign matter that has entered between the coating layer and the sliding surface of a partner member is efficiently embedded in the coating layer. When the coating layer is formed of a resin composition, the resin composition contains a binder resin, a solid lubricant, and metal particles having a Young's modulus of 10 GPa or more but 100 GPa or less.

Growing community of inventors

Inuyama, Japan

Erina Yasuda