Metal-ceramic Composite to Improve Wear Resistance of Aluminum Alloys Surface by Nanoceramic Electroplating

The improvement of aluminum alloys surface according to the industrial applications was achieved by many techniques. Including increase of hardness, that lead to improve wear resistant of aluminum alloys surface, for that purpose the electroplating was used. Electroplating by composite of hard chromium-Nanoceramic Co-deposit was conducted in this paper. Nanoceramic particles including Nanotitanium oxide (Nano-TiO2), Nano-aluminum oxide (α-Nano-Al2O3) and Nanozirconia (Nano-ZrO2) were used to hard chromium electroplating on 1050 aluminum alloy. For co-deposit analyses characterization were used scanning electron microscope (SEM) and- energy dispersive X-ray (EDX). The hardness was evaluated by Micro hardness tester, wear resistance was increased by increase the hardness with the presence of Nanoceramic particles in this process. The results showed the maximum hardness and minimum wear rate at the samples with Nanozirconium oxide particles were 1409MPa and (0.003*10-8cm3*cm-1) respectively.