Study of erosion-corrosion behavior of aluminum metal matrix composite

Abstract EN

The aim of present work is to study the erosion-corrosion behavior of aluminum metal composite which consists of the (Al-12wt % Si) alloy as matrix phase and 10wt% SiC particles as reinforcing phase.

Composite material was prepared by stir casting using vortex technique.

A general corrosion and erosion-corrosion for the base alloy and the prepared composite were carried out in 3.5wt % NaCl solution as corrosive medium for general corrosion while in erosion-corrosion ,with varying impact angles (0°, 30°,45° and 90°) in slurry solution ( 1wt % SiO2 sand in 3.5wt % NaCl solution as the erodent).

It was found that the general corrosion rate for composite specimen is lower than that of the base alloy (Al-12 % Si).

In case of erosion-corrosion results, it was found that the weight loss rate or corrosion rate in (gmd) unit at impact angle (0°) is lower than that of other impact angles for the base alloy and composite material.