MEMBER USING ALUMINUM ALLOY COMPOSITE MATERIAL AND ITS PRODUCING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a member using an aluminum composite material with lubricativity and produced at a low cost, and its producing method. SOLUTION: This member using the aluminum alloy composite material, 10 distributes ceramic particles 12 in an aluminum alloy 11 as a three- dimensional structure and concave parts 55 is formed with an etching treatment on the surface of a base material of the composite material. This producing method for member is provided by which the ceramic particles are charged into molten aluminum alloy and the temperature is slowly lowered while stirring. This material is solidified under a state of distributing the ceramic particles as a three-dimensional network structure. A billet is formed into the member which is dipped into the etching solution 54 and the concave parts 55 are formed on the surface by melting the aluminum alloy 11 of the base material.