Mangifera odorata GRIFF SEED EXTRACT AS CORROSION INHIBITOR OF MILD STEEL IN HYDROCHLORIC ACID MEDIUM

Abstract

Mangifera odorata Griff seed extract as a corrosion inhibitor of mild steel in 1M hydrochloric acid solution was investigated by weight loss, potentiodynamic polarization, and scanning electron microscopy methods. The results showed that the extract was able to inhibit the corrosion of mild steel with an inhibition efficiency of more than 90% at 8 g/L Mangifera odorata Griff seed extract in 1M hydrochloric acid solution. The inhibition efficiency was found to be increased with increasing the extract concentration and decreased with increasing temperature. The adsorption of Mangifera odorata Griff seed extract on the mild steel surface follows the Langmuir adsorption isotherm and behaves as a mixed type inhibitor. The value of the highest inhibition efficiency of 91.78% was obtained by weight loss and 94.55% by potentiodynamic polarization method at MOSE concentration of 8 g/L and the immersion temperature of 30 o C. Thermodynamic parameter values from the adsorption process indicate that the extracts can function as inhibitors due to it can increase the activation energy of mild steel dissolution.

Corrosion Inhibition Effect of Acidic Extract of Bark of Eucalyptus Globulus on Mild Steel

“…The infrared spectrum of EG extracts indicates the presence of -OH (3327cm -1 ), C-O (2350 cm -1 ), C-N (2164 cm -1 ), and C=O (1640 cm -1 ) (Abboud et al, 2013). This IR spectrum shows the chemical component in EG, which acts as a corrosion inhibitor that can bond directly to form a stable complex by adsorption on the MS surface (Stiadi et al, 2020…”

“…Therefore, the study of sustainable corrosion inhibitors has attracted the attention of corrosion scientists. Most of the inhibitors obtained from natural products are biodegradable, non-toxic, eco-friendly, and cheaper (Halambek et al, 2010;Stiadi et al, 2020). It has encouraged the search for eco-friendly corrosion inhibitors as an alternative to replace inorganic and organic inhibitors to promote sustainable greenness to the environment.…”

Synergetic Effect of Potassium Iodide and Miana (Coleus scutellaroides (L.) Benth.) Leaves Extract on Mild Steel in HCl Medium

“…The value of ∆G o ads can be used to determine enthalpy (∆H o ads) and entropy (∆S o ads) calculated by the equation ( 6) (Stiadi et al, 2020).…”

Corrosion Inhibition of Elettarai cardamom Bark Extract on Mild Steel in 1M H2SO4

“…Globally, a clean and safe environment is a significant concern. Currently, natural products extracts as green and eco-friendly inhibitors are significantly employed for the corrosion prevention of metals and alloys (Afia et al, 2014;Medupin et al, 2023;Okafor et al, 2012;Raja & Sethuraman, 2009;Stiadi et al, 2020). Green corrosion inhibitors are plant extracts containing alkaloids, polyphenolic compounds, flavonoids, etc., that, when introduced in small amounts to corrosive media, slows down the rate of corrosion of metals.…”

“…Green corrosion inhibitors are plant extracts containing alkaloids, polyphenolic compounds, flavonoids, etc., that, when introduced in small amounts to corrosive media, slows down the rate of corrosion of metals. Green inhibitors are renewable, inexpensive, effective at low concentrations, and safe with other medium components at working temperatures (Cáceres et al, 2021;Karki et al, 2020;Stiadi et al, 2020). Therefore, organic and inorganic inhibitors are being reduced and eventually abandoned.…”