Daido Metal Company Ltd.

Kouichi Saruwatari

Yukihiko Kagohara

Tomoyuki Nirasawa

An aluminum-based sliding alloy containing 1 to 15 mass % of Si is provided. Si precipitates in the form of particles in an observation field of the aluminum-based sliding alloy. The Si particles have a maximum diameter of 0.01 to 7.5 &#x3bc;m and the total area of Si particles having a diameter of not more than 5.5 &#x3bc;m accounts for not less than 95% of the total area of the Si particles present in the aluminum-based sliding alloy.

Aluminum-based sliding alloy and casting apparatus for the same

A slide member provided with an Al-based alloy layer including Si and having a first contoured surface having 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 layers 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 &#x3bc;m or less, the Si particles having the predetermined particle diameter being distributed in the Al-based alloy layer with a distance between centers of gravity of the Si particles having the predetermined particle diameter averaging 6 &#x3bc;m or less, and wherein the overlay has a second contoured surface having second planar surfaces and second convexities conforming with the first planar surfaces and the first convexities of the first contoured surface.

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Inuyama, Japan

Kouichi Saruwatari