Raphia taedigera seed extract as a green corrosion inhibitor for the corrosion of mild steel in acidic media

In the present work, ethanolic extract of Raphia taedigera seed was used as corrosion inhibitor for Aluminium alloy 6063 (AA6063) in an acidic environment. The evaluation was carried out with different dosages of the seed extract in 1.0 M HCl using the weight loss method at room temperature. The present study results confirmed that the Raphia taedigera seed extract acts as an effective green corrosion inhibitor for AA6063 in the acid medium. The inhibition efficiency increased with an increase in the extract concentration of the inhibitor. FTIR and SEM analyses confirmed the formation of a protective layer on the AA6063 surface when the acid solution was inhibited. Changes in the surface functional groups revealed by FTIR also confirmed that there was an interaction between the surface of the alloy surface and the extract constituents. The inhibition efficiency of 86.41% was achieved for R. taedigera extract of 2% wt/v.