Inhibition of corrosion of aluminium in presence of fluorescein in basic medium

Abstract

Abstract. The influence of Fluorescein in conjunction with calcium oxide on the corrosion of Aluminium in 1.0 N NaOH was studied by galvanostatic studies and weight loss studies. It has been found that the inhibition of corrosion of aluminium increased with the increasing concentration of the inhibitor. The maximum inhibition efficiency of fluorescein alone was found to be 30.80%. However, the addition of calcium oxide increased the maximum inhibition efficiency to 53.71%. The corrosion process was found to be under the anodic control, in the presence or in the absence of inhibitor. The inhibition was found to be mixed type.

Metanil yellow as commercial and environmentally friendly inhibitor against corrosion of mild steel in molar hydrochloric acid medium

“…Organic dyes have become more useful; thus many organic dyes such as: methylene blue, safranin-o, Congo red, thymole blue and fluorescein have been used as corrosion inhibitors of carbon steel and aluminum in aggressive environments acidic or basic [6][7][8][9][10][11]. The researchers studied the inhibitory effect of organic dyes in an acid medium.…”