Characterization of Aluminium-Titania-Nickel Oxide hybrid nanocomposite prepared by powder metallurgy

In this study, the effect of variation milling time and compaction pressure on structural and microstructural of Al-Ti02-NiO nanocomposite prepared by powder metallurgy routes. Elemental powders of aluminium (Al), titanium dioxide (TiO2) and nickel oxide (NiO) were milled in a low energy ball mill using 10 mm ball at 15, 30, 45, 60, 75, 90, and 105 h. Then, the nanocomposite was compacted using cold compaction with 13.8, 27.6, 41.4, 55.2 MPa. These nanocomposites were characterized for its structural properties, morphology and densification using Panelli-Ambrizio Filho equation. An increasing milling produced structural changes in nanocomposite. The morphology of Al-T102-Ni0 nanocomposite become homogenous with increasing milling time while Al crystallite size was reduced and internal strain was increased. The densification of Al-Ti02-NiO nanocomposite was enhanced with increasing milling time and compaction pressure.