Metal matrix composite and process for producing the same

Details Metal matrix composite and process for producing the same Metal matrix composite and process for producing the same

C - Chemistry, Metallurgy

22

C

C22C 32/00 (2006.01) B22F 1/00 (2006.01) C04B 35/84 (2006.01) C22C 29/12 (2006.01)

Patent

CA 2170456

A metal matrix composite comprises 2 to 80 volume % of .alpha.-alumina powder as a reinforcement. The .alpha.-alumina powder comprises polyhedral primary particles substantially having no fracture surface, D50 of .alpha.-alumina powder is 0.1 µm to 50 µm and a ratio of D50 to D10 is not more than 2, wherein D10 and D50 are particle sizes at 10% and 50% cumulation from the smallest particle side of a weight cumulative particle size distribution, respectively. A process for producing the metal matrix composite comprises infiltrating a molten metal into the .alpha.-alumina powder under pressure or non- pressure.

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