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Aluminum metal matrix composites are the fastest developing materials for structural applications due to their superior properties. In this study, Al(Zn)/Al 2 O 3  nanocomposite and also Al(Zn) solid solution were fabricated successfully using mechanochemical synthesis and spark plasma sintering. The structural evolution of the powder particles after different milling times was studied by X-ray diffraction analysis. Also, the corrosion behavior of Al(Zn)/Al 2 O 3  metal matrix nanocomposite was evaluated and compared with that of nanocrystalline Al(Zn) alloy. The nanocomposite had been prepared via mechanochemical reaction between zinc oxide and aluminum powder mixture derived from a high-energy ball milling process. The results showed that the Al(Zn)/Al 2 O 3  nanocomposite is formed after 40 h of milling time. Also, it was found that the polarization resistance of the sample containing Al 2 O 3  is significantly higher (more than 67 times) than that of nanocrystalline Al(Zn) alloy (sample without Al 2 O 3 ).

The effect of Al 2 O 3 reinforcement particles on the corrosion behavior of Al(Zn) solid solution matrix