eng Oriental Scientific Publishing Company Material Science Research India 0973-3469 2016-12-20 13 2 101 105 4514 article Surface Protection of Steel by Adsorption of Milletia pinnata Extract Monikandon Sukumaran 1 Kesavan Devarayan 2 Department of Basic Engineering, College of Fisheries Engineering, Tamil Nadu Fisheries University, Nagapattinam 611 001, Tamil Nadu, India. Department of Basic Sciences, College of Fisheries Engineering, Tamil Nadu Fisheries University, Nagapattinam 611 001, Tamil Nadu, India.

Steel corrosion inhibition in acidic and alkaline medium by ethanolic extract of Milletia pinnata is described in this study. The inhibitive behavior of the inhibitor is evaluated by weight loss measurements, adsorption isotherms, and thermochemical parameters. The inhibitor exhibited a maximum of 87% and 90.5% inhibition efficiency against steel corrosion in 0.5 M NaOH and 1.0 M H2SO4, respectively. The weight loss linearly fit to Langmuir adsorption isotherm with correlation coefficient value close to unity. The thermochemical parameters indicated for predominant physical adsorption of the inhibitor molecules on the steel surface.

 https://www.materialsciencejournal.org/vol13no2/surface-protection-of-steel-by-adsorption-of-milletia-pinnata-extract/ Green inhibitor Milletia pinnata Physical adsorptione Steel surface protection