Corrosion Inhibition Potentials Of Brassica Oleracea Capitata Extract On Mild Steel And Zinc In Acidic Media.

Abstract

Recently, investigations have been made into the inhibition properties of natural plants so as to find alternatives to synthetic inhibitors. In order to contribute the contemporary interests, the inhibition action of Brassica oleracea capitata extract on mild Steel and Zinc corrosion in 2.0M H₂S0₄ solution was studied using weight loss technique. The results obtained indicated that as the concentration of Brassica oleracea capitata extract increased, the corrosion rate of the metals specimens decreased. Inhibition efficiency was found to increase with Brassica oleracea capitata concentration. The result showed that optimum inhibition efficiency (IE)  for mild steel and Zinc were  97.1% and 91.3% respectively at 50ml volume of the extract. However, Brassica oleracea capitata extract could serve as one of the alternatives to synthetic corrosion inhibitors.

Key words: Corrosion, extract, inhibition, Brassica