Light metallic composite material and method of producing...

Details Light metallic composite material and method of producing... Light metallic composite material and method of producing...

C - Chemistry, Metallurgy

22

C

75/1.2

C22C 1/10 (2006.01) B22F 3/11 (2006.01) C22C 1/08 (2006.01) C22C 32/00 (2006.01) C22C 47/06 (2006.01) C22C 47/08 (2006.01)

Patent

CA 1322876

ABSTRACT OF THE DISCLOSURE A light metallic composite material containing therein fine granular additives dispersed in a matrix of a light metallic material, which composite material has a light weight, high mechanical strength, and excellent characteristics such as high damping ability. The additives each have a density less than that of the matrix and heat resistance enough to withstand a heating temperature at which they are composited with the matrix. Preferably, the additives are each formed with a coating which increases mechanical strength and provides an electromagnetic characteristic different from that of the matrix. Preferably, the composite material is produced by heating a mixture of matrix powders and additives up to a temperature where only part of the mixture including no microspheres is softened but the mixture is adequately composited, an amount of additives being equal to 10 % to 70 % by volume of the matrix, and by forming the composited mixture into a desired shape and solidifying same.

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