Evaluation of corrosion and wear features of Al matrix reinforced with particles (SiC+Y2O3) coated with either nano-Ag/Ni or nano/Ag/Cu

Document Type : Original Article


1 Department of Mechanical Design and Production, Faculty of Engineering, Cairo University, 12613, Egypt.

2 Mining, Petroleium, Metallurgical Engineering Dept., Faculty of Engineering, Cairo Univerrsity

3 Faculty of science, chemistry department, Al Azhar University

4 Powder Metallurgy Division, Manufacturing Department, Central Metallurgical R&D Institute, P.O.87 Helwan, 11421 Cairo, Egypt.

5 Powder Technology Division, Manufacturing Technology Institute, Central Metallurgical Research and Development Institute, Helwan El-Tabbin, P.O. Box 87, Cairo, Egypt


A new generation of Al-hybrid composite was successfully fabricated using the powder metallurgy technique after the electroless chemical deposition of both nano Ni and Cu on the surface of Y2O3-SiC mixture particles. Al metal matrix (AMM) was reinforced with nano-Ag/Ni or nano-Ag/Cu coated (SiC-Y2O3) particles with 2.5, 5, and 7.5 wt% content by a 50:50 ratio of SiC to Y2O3. The microstructure was examined by optical, SEM, EDX, and TEM. The XRD also was used for phase identification. A wettability test was established on the sintered samples. The wear behavior was conducted. Evaluation of the corrosion feature of the AMM reinforced with (SiC+Y2O3)/ either nano-Ag/Ni or nano-Ag/Cu was investigated in 3.5% NaCl. The inhibiting impact in 3.5% NaCl solution was studied by potentiodynamic polarization (PDP). The AMM reinforced with (SiC+Y2O3)/nano-Ag/Cu has a good mixed-type corrosion inhibitor. Also, the corrosion rate decreased by increasing either nano-Ag/Ni or nano-Ag/Cu. The protecting film was formed on the AMM reinforced by either nano-Ag/Ni or nano-Ag/Cu and confirmed by SEM and EDX.