Özet:

In this study, magnesium oxide (MgO)added aluminum (Al) - MgO compounds were produced by the powder metallurgy method. In the compounds, MgO is added as a strengthening by weight of 10% and the average diameter of the strengthening is <40 nm. Composites are subjected to different synthesis temperatures (500 oC - 550 oC - 600 oC) with a mixture, compression and 5 hour synthesis time. The microbuildings of the compounds have been studied through an optical microscope and an scanned electron microscope (SEM). The theoretical intensities of the compounds are studied according to the law of mixture and the measurement intensities are studied according to the Arşimed principle. The theoretical intensity values and measurement intensity values have determined the porosite content of products. Mechanical characteristics have also been studied by applied hardness tests to composites. MgO has significantly increased the hardness of the nano particle aluminum matrix. The maximum hardness value is obtained in the Al-10 MgO composite at 104 HB. It has been shown that the growth of the liner in hardness prevents the growth. With increased temperature, one growth in composites occurs, the porosite content is reduced and different values are obtained in hardness. The maximum relative intensity is obtained with a synthermele temperature of 600 oC.

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