TITLE:
Experimental Investigation of Inhibition Efficiency of Crocin for Chloride-Induced Corrosion of Aluminum Alloys
AUTHORS:
Paraskevi Pantazopoulou, Stamatina Theohari, Sofia Kalogeropoulou
KEYWORDS:
Crocin, Aluminum Corrosion, Eco-Friendly Inhibitors, Sodium Chloride Environment, Electrochemical and Gravimetric Methods
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.12 No.11,
November
29,
2022
ABSTRACT: The use
of Crocin, derived from the flowers of Crocus
sativus, is investigated as corrosion inhibitor for the AA1050, AA5083,
AA5754 and AA6082 aluminum alloys in chloride ions environment. Aluminum and
aluminum alloys are subjected to corrosion in the aggressive environment of
chlorides, so several green corrosion inhibitors, mostly of plant origin, with
minimum impact on health and the environment have been examined. In this study,
the inhibition efficiency of 1.25 mM Crocin in a 0.01 M NaCl corrosive solution
was assessed via electrochemical corrosion techniques and gravimetric mass loss
measurements of the aluminum alloys. The surface of the specimens was examined
using Scanning Electron Microscopy, Energy Dispersive Spectroscopy, Stereomicroscopy and Glossiness measurements.
Experimental results reveal the protective anticorrosive action of
Crocin for all aluminum alloys in the sodium chloride medium.