Patent ID: 7560171
Filing Date: 2009-07-14
Classification: B22D,B22F,Y10T

Abstract:
1. A composite material member comprising: a main material composed of a light metal or a light metal alloy which can be molded by casting; and a secondary material joined to the main material by integrally casting with the main material, wherein a porous material is arranged on a part of a boundary area or an entire boundary area between the main material and the secondary material, wherein the light metal is aluminum or magnesium, and the light metal alloy is an alloy including at least one of aluminum and magnesium, wherein the secondary material is cast iron, iron steel, stainless steel, Fe—Cr-based alloy, Ni-based alloy, or ceramic, wherein the porous material is composed of a metal fiber or a foamed metal by which a diffusion joining can be performed with the secondary material, and wherein in the case in which the porous material has a single layer structure, in a case in which the porous material has a double layer structure having a first layer proximate to the secondary material and a second layer proximate to the main material,