Mitigation of corrosion of carbon steel in acidic solutions using an aqueous extract of Tilia cordata as green corrosion inhibitor

Abstract

The effectiveness of using Tilia cordata extract as a green corrosion inhibitor for carbon steel in 1 M hydrochloric acid solutions was demonstrated by employing some chemical and electrochemical techniques. The surface morphology of C-steel specimens was examined. The results showed that Tilia cordata has corrosion inhibition characteristics with efficiency of 96% as the concentration of Tilia cordata extract increased to 300 mg L -1 . Charge transfer resistance (R ct ) value increases while both the capacitance of the double layer (C dl ) and corrosion current (i corr ) values decrease with increasing the extract concentration. The effect of temperature was studied in the range 30-60°C. Some thermodynamic parameters were calculated and discussed. The adsorption of extract on the C-steel surface was found to obey Langmuir adsorption isotherm. Polarization results showed that the investigated extract acts as mixed type inhibitor. All the different used techniques gave similar results.

Impact of some pyrrolidinium ionic liquids on copper dissolution behavior in acidic environment: experimental, morphological and theoretical insights

“…The great strength of the EFM is the causality factors which act as an internal test of the EFM measurement validity, with the causality factors the experimental EFM results can be conrmed. 45,46 Fig . 6 shows the current response involving not only the input frequencies, but also the other frequencies which are the sum, difference, and multiples of the two input frequencies.…”

Experimental and theoretical studies on corrosion inhibition of 4-amidinophenyl-2,2′-bifuran and its analogues in acidic media

“…2.7.1. Dmol 3 . Quantum chemical parameters along with Fukui function indices were computed using DMol 3 code installed in Materials Studio soware version 7.0.…”

“…1,2 Corrosion of iron and its alloys causes huge nancial loss, especially in petrochemical and oil-gas industries where acid solutions are commonly utilized in various operations, e.g., descaling, cleaning, pickling and oil-well acidizing applications. 3 There is, however, a major risk to use acid solutions without further treatment with corrosion inhibitors because CS is severely attacked by acid solutions. Therefore, the use of corrosion inhibitors is a fundamental method to corrosion of metals in acidic media.…”

Mitigation of corrosion of carbon steel in acid medium using some antipyrine derivatives

“…The values of causality factors obtained in absence and presence of investigated compounds. It shown from the Table that the corrosion current density decreases with increasing the concentration of the investigated compounds with respect to blank and hence the inhibition efficiency increases and indicate that the investigated compounds inhibit the acid corrosion of the alloy through adsorption [32]. …”