Gossipium hirsutum L. extracts as green corrosion inhibitor for aluminum in NaOH solution

The corrosion inhibition properties of Gossypium hirsutum L leave extracts (GLE) and seed extracts (GSE) in 2 M sodium hydroxide (NaOH) solutions were studied using chemical technique. Gossypium extracts inhibited the corrosion of aluminium in NaOH solution. The inhibition efficiency increased with increasing concentration of the extracts. The leave extract (GLE) was found to be more effective than the seed extract (GSE). The GLE gave 97% inhibition efficiency while the GSE gave 94% at the highest concentration. (C) 2009 Elsevier Ltd. All rights reserved.