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Al composite foams reinforced by in-situ generated MgAl2O4 spinel whiskers were fabricated via sintering and dissolution processes, using sodium chloride particles as a space holder material. The MgAl2O4 spinel whiskers with diameters ranging from 50 to 300nm were uniformly distributed in the composite foams and formed well-bonded interface with the Al matrix. The mean pore sizes and the average thickness...
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