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Corrosion , Mechanical and Wear Properties of nano-ZnO doped Aluminium

Zinc Oxide (ZnO) Nano powder was produced by Solution Combustion Synthesis (SCS) at 350 ± 10° C temperature using sugar solution as fuel. The final product was characterized by means of XRD, SEM and EDX. The powder blends of ZnO/Al were prepared by low energy ball milling and the composite blocks of ZnO/Al were fabricated by powder metallurgy technique. The microhardness, wear resistance and corrosion resistance of ZnO/Al blocks were studied. The results show that the microhardness, wear resistance and corrosion resistance can be improved significantly with addition of ZnO nano powder up to 1 wt%; at the same time, the optimal microhardness and microstructure were obtained when the mass fraction of ZnO nano powder is 1wt% where as sample with 5 wt% of ZnO nano powder show best wear resistance. Corrosion tests reveal that there was a slight mass loss due to corrosion.