Abstract

Weight loss corrosion studies of ZA-27/red mud metal matrix composites are studied in this research work. Metal
matrix composites show improved corrosion resistance than meals and alloys. They find their application in
automobile and air craft industries. ZA-27 is a commercially available alloy. Red mud is a waste obtained after
the removal of ZA-27 from its ore. ZA-27 is reinforced with 2, 4, and 6 weight percentage of red mud particulates
by liquid melt metallurgy technique using vortex method. Machined specimen was subjected to microstructural
studies. Weight loss corrosion tests were carried out according to ASTM standards G-69 in sodium chloride and
sodium hydroxide mediums. Tests were conducted up to 96 h with 24 h interval. Corrosion rate was found to be
decreased with increase in exposure time in both mediums. Effect of exposure time and presence of increased
percentage of reinforcement red mud is discussed in detail.