Influence of nanodispersions oncorrosion behaviour of aluminum metal matrix nanocomposites fabricated using powder metallurgy route

3^rd International Conference and Exhibition on Materials Science & Engineering

October 06-08, 2014 Hilton San Antonio Airport, USA

E Y El-Kady, T S Mahmoud, M Abdel-Aziz and T A Khalil

Scientific Tracks Abstracts: J Material Sci Eng

Abstract :

The corrosion behaviour of Al/SiC and Al/Al2O3 metal matrix nanocomposites (MMNCs) using electrochemical measurements in 3.5 wt.%NaCl solution were studied. Several Al MMNCs containing different sizes, typically, 60 nm and 200 nm and different volume fractions of SiC and Al2O3nanoparticulates were manufactured using conventional powder metallurgy (PM) route. The results revealed that the corrosion rates of the 60 nm Al/SiC and Al2O3nanocomposites in 3.5 wt.-% NaCl solution was reduced with increasing the volume fraction of the nanoparticulates. The Al/5 vol.-% SiC (200 nm) nanocomposites exhibited the lowest corrosion resistance among all the investigated materials even the pure Al matrix. The Al/ SiCnanocomposites exhibited better corrosion resistance in 3.5 wt.%NaCl solution than the Al Al2O3nanocomposites.