Patent ID: 8053088

Claim:
A slide member comprising: an Al-based alloy layer including Si and having a first contoured surface comprising first planar surfaces and first convexities consisting of Si particles protruding from the first planar surfaces; an intermediate layer that coats the Al-based alloy layer; and an overlay that coats the intermediate layer; wherein 90% or more of the Si particles protruding from the first planar surfaces are configured to have a predetermined particle diameter of 2 μm or less, and wherein the Si particles having the predetermined particle diameter are distributed in the Al-based alloy layer such that a distance between centers of gravity of the Si particles having the predetermined particle diameter 1) averages 6 μm or less, and 2) is equal to or greater than twice an average particle diameter of the Si particles having the predetermined particular diameter, and wherein the overlay has a second contoured surface comprising second planar surfaces and second convexities conforming with the first planar surfaces and the first convexities of the first contoured surface.