Colocasia Esculenta as a Corrosion Inhibitor in Low Si Containing Al-S Aluminum Alloy in HCL

Abstract

Corrosion causes heavy damages to all metallic elements. Different machines and structures made of metal experiences this problem. Different fossil lubricant is used to avoid the corrosion in metal. Importance of bio-lubricant is inevitable in order to save the environment as well as for sustainable development. This paper represents the Colocasia esculenta as a corrosion inhibitor in low Si containing Al-S Aluminum alloy in HCl. Four different solutions such as HCl of Ph. value of 0.59; Colocasia esculenta leaf juice of Ph. value of 6.66; 60% HCl,40% Colocasia esculenta leaf juice of Ph. value of 0.79 and 40% HCL, 60% Colocasia esculenta leaf juice of Ph. value of 0.98 are considered. Firstly, the weights of the four samples are taken. Then they are kept in four different solutions for 15 and 30 days. Later the weight of each sample is measured and compared with the previous weight. The weight of each sample decreased slightly. Finally, morphological analysis of the samples is performed by SEM to investigate the abnormality in sample’ structure.