EVALUATION OF HARDNESS AND CORROSSION BEHAVIOUR OF Al 7075∕TiB2 ∕ Cr2O3 COMPOSITE

Aluminium composite is an attractive material for using in corrossive environment. Many studies have been conducted on corrossion rate in Aluminium composites. In this work Aluminium 7075 composite is reinforced with TiB2 and Cr2O3 with different weight perentage of reinforcements. From the results it is understood that the density of the composite increases with more addition of reinforcements to the matrix. The uniform immersion test (ASTM–G31) in 90 ml of HCl was conducted. It was found that there is an increase in corrossion resistance when the reinforcements were added.