Weight Loss Corrosion Studies of Aluminium-7075 Metal Matrix Composites Reinforced with SiC Particulates in HCl Solution

Abstract

Present paper involves the studies on corrosion resistance properties of Al 7075/SiC metal matrix composites (MMCs) in acid medium. The liquid melt metallurgy technique using vortex method was utilised to fabricate MMCs. Pre heated but uncoated silicon carbide particulates of 50-80 micro meters in size are added to the matrix as reinforcement. Al 7075 containing 2, 4 and 6 weight percentage of silicon carbide is prepared. Corrosion tests were conducted by weight loss method for different exposure time where 1N HCl was used as corrodent. The corrosion rate of MMCs was lower than that of matrix Al 7075 alloy under the corrosive atmosphere.