Abstract
In this study, the addition of 1.00wt.% Al2O3 crystals to the metal matrix of the liquid aluminum was studied. In order to investigate the influence of heat treatment on activation of Al2O3 powders and mechanical properties of Al–Al2O3 composites, the Al2O3 particles were heated at 1000°C. X-ray Diffraction (XRD) analysis used to characterize the crystal lattice of Al2O3 and its variation during heat treatment. The size and morphology of the Al2O3 grains was evaluated by Scanning Electron Microscopy (SEM). The results showed a considerable change in morphology of Al2O3 grains during the heat treatment. Mechanical evaluation such as hardness, compression and wear tests showed enhancement in the properties of Al–1.00wt.% heat treated Al2O3 vs. Al–1.00wt.% Al2O3 composite.
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