Abstract: There is provided a sliding member formed by combining a resin overlay and a soft metal overlay. The sliding member has a soft layer comprising a metallic material with a hardness of less than 40 HV provided under a resin overlay layer comprising a solid lubricant and resin. In the event of contamination by a foreign matter, the soft layer under the resin overlay layer is capable of plastic deformation and the resin overlay layer is capable of partial deformation accompanying the plastic deformation due to the hardness (T1) (?m) of the soft layer and the hardness (T2) (?m) of the resin overlay layer being such that 0.2?T1/T2?7.0 and 3.0?T1?20.0. Consequently, a foreign matter is desirably embedded and resistance to a foreign matter can be improved. Low friction is maintained by the resin overlay layer even after contamination by a foreign matter.

Abstract: A slide member is provided with a base material and an overlay provided over the base material. The overlay includes a plurality of regions in a thickness direction including a region located in sliding-surface side that slides with the counter element and a region located in a base-material side. A material forming the overlay includes a plurality of crystal planes. Orientation index of at least one of the crystal planes differs in the region located in the sliding-surface side and the region located in the base-material side of the overlay.

Abstract: A slide member provided with an overlay composed of a Bi-based material. A slide member includes a substrate; and an overlay including Bi or a Bi alloy provided over the substrate. A surface portion (surface-most portion) of the overlay includes an oxide layer in which a bismuth oxide, is scattered. The content of the bismuth oxide in the oxide layer represented by oxygen content is equal to or greater than 0.5% mass % and equal to or less than 8.0 mass %. The orientation intensity ratio of the main orientation plane of Bi or Bi alloy crystals in the overlay is 50% or greater. The main orientation plane of the bismuth oxide crystals in the oxide layer is the (220) plane or the (201) plane.

Abstract: Provided is a sliding member which has high seizure resistance though an overlay layer comprising Ag as the main component is used therein. The sliding member of an embodiment comprises a base and an overlay layer which is disposed on the sliding-side surface of the base and which comprises Ag as the main component and contains Al. The overlay layer comprising Ag as the main component is relatively soft. Due to this, the overlay layer comprising Ag as the main component can ensure high seizure resistance even when the use of Pb is avoided. Furthermore, the overlay layer comprising Ag as the main component has excellent thermal conductivity. Due to this, frictional heat generating at the sliding part rapidly dissipates to the base side.

Abstract: There is provided a sliding member formed by combining a resin overlay and a soft metal overlay. The sliding member has a soft layer comprising a metallic material with a hardness of less than 40 HV provided under a resin overlay layer comprising a solid lubricant and resin. In the event of contamination by a foreign matter, the soft layer under the resin overlay layer is capable of plastic deformation and the resin overlay layer is capable of partial deformation accompanying the plastic deformation due to the hardness (T1) (?m) of the soft layer and the hardness (T2) (?m) of the resin overlay layer being such that 0.2?T1/T2?7.0 and 3.0?T1?20.0. Consequently, a foreign matter is desirably embedded and resistance to a foreign matter can be improved. Low friction is maintained by the resin overlay layer even after contamination by a foreign matter.

Abstract: A slide member provided with an overlay composed of a Bi-based material. A slide member includes a substrate; and an overlay including Bi or a Bi alloy provided over the substrate. A surface portion (surface-most portion) of the overlay includes an oxide layer in which a bismuth oxide, is scattered. The content of the bismuth oxide in the oxide layer represented by oxygen content is equal to or greater than 0.5% mass % and equal to or less than 8.0 mass %. The orientation intensity ratio of the main orientation plane of Bi or Bi alloy crystals in the overlay is 50% or greater. The main orientation plane of the bismuth oxide crystals in the oxide layer is the (220) plane or the (201) plane.

Abstract: A slide member is provided with a base material and an overlay provided over the base material. The overlay includes a plurality of regions in a thickness direction including a region located in sliding-surface side that slides with the counter element and a region located in a base-material side. A material forming the overlay includes a plurality of crystal planes. Orientation index of at least one of the crystal planes differs in the region located in the sliding-surface side and the region located in the base-material side of the overlay.

Abstract: Disclosed is a sliding member (11) that has a base section (12) and an overlay layer (13) provided on the base section (12). The overlay layer (13) has Bi or a Bi alloy as the base, and contains Sn or an Sn alloy. The average particle size of Sn-based particles (15) distributed within the overlay layer (13) is no more than 5% of the average particle size of Bi-based particles (14) distributed within the overlay layer (13).

Abstract: Disclosed is a sliding member having an overlay layer (13) containing Bi-based particles (14) comprising Bi or a Bi alloy. The long axis of the Bi-based particles (14) is considered to be X, the short axis Y, and the aspect ratio Z=X÷Y. The aforementioned Bi-based particles are classified as one of either first Bi-based particles that satisfy Z<2, second Bi-based particles that satisfy 2?Z<3, or third Bi-based particles that satisfy 3?Z. With respect to the total number of Bi-based particles, considering the proportion that are first Bi-based particles to be a%, the proportion that are second Bi-based particles to be b%, the proportion that are third Bi-based particles to be c%, a÷b=d, and a÷c=e, the sliding member satisfies: a?30, 0.5?d?6.0, and 0.5?e?6.0.

Abstract: A slide member including a base material; an intermediate layer consisting of Ag or Ag-based alloy and an additive element of a first quantity formed over the base material; and an overlay comprising Bi or Bi-based alloy and the additive element of a second quantity formed over the intermediate layer, wherein the additive element consists of a low melting point metal, the first quantity being five times or greater than the second quantity.

Abstract: A slide member including a base material; an intermediate layer consisting of Ag or Ag-based alloy and an additive element of a first quantity formed over the base material; and an overlay comprising Bi or Bi-based alloy and the additive element of a second quantity formed over the intermediate layer, wherein the additive element consists of a low melting point metal, the first quantity being five times or greater than the second quantity.