Electrochemical evaluation and DFT calculations of aromatic sulfonohydrazides as corrosion inhibitors for XC38 carbon steel in acidic media

2019 ◽  
Vol 1198 ◽  
pp. 126898 ◽  
Author(s):  
Imane Ichchou ◽  
Lahcène Larabi ◽  
Houria Rouabhi ◽  
Yahia Harek ◽  
Amel Fellah
Keyword(s):  
Carbon Steel ◽  
Dft Calculations ◽  
Corrosion Inhibitors ◽  
Acidic Media ◽  
Electrochemical Evaluation

Tests of Imidazoline-Based Corrosion Inhibitors for Low-Carbon Steel Tending to Absorb Hydrogen in Acidic Media

2015 ◽  
Vol 51 (3) ◽  
pp. 252-256 ◽  
Author(s):  
M. D. Plotnikova ◽  
I. A. Tiunov ◽  
A. A. Novikov ◽  
A. A. Khrenova ◽  
A. B. Shein
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitors ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Acidic Media

scholarly journals Synthesis of two supramolecular coordination polymers and electrochemical evaluation of their corrosion inhibition performance on corrosion of carbon steel in acidic medium

2021 ◽  
Vol 62 (4) ◽  
pp. 316-332
Author(s):  
El-Aziz Abd ◽  
Safaa Etaiw ◽  
Essam El-Waseef
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitors ◽  
Electrochemical Impedance ◽  
Supramolecular Coordination ◽  
Different Temperatures ◽  
Temperature Polarization ◽  
Inhibition Performance ◽  
Electrochemical Evaluation ◽  
Inhibitor Dose ◽  
Henry Isotherm

The effect of the SCPs-[CuII(en)2] [CuI (CN)2]2. H2O] (SCP1) and {[H2DAB] [Cu4(CN)6].2H2O} (SCP2) as corrosion inhibitors for carbon steel (CS) was studied in 1.0M HCl solution. As the synthesized inhibitor dose increases, the inhibition productivity (%e) increases reaching to 90.3% and 89.9% at 21x10-6M dose for SCP2 and SCP1, respectively. This result evidenced by mass loss (ML) investigated at three different temperatures 25-35-45oC, while potentiodynamic polarization (PP), electrochemical impedance spectroscopy (EIS), and electrochemical frequency modulation technique (EFM) were tested at 25°C. The synthesized inhibitors adsorbed on the CS surface physically allowing Henry isotherm. The results displayed that the synthesized inhibitors are excellent and their (%e) was significantly increased by raising the dose and decreased by raising the temperature. Polarization curves revealed that the synthesized inhibitors act as mixed type. The thermodynamic parameters were calculated and discussed. The protection was confirmed by the creation of the thin film of inhibitors precipitated on the surface of CS.

scholarly journals INVESTIGATION OF SOME COMPOSITIONS OF THE «SOLING» SERIES AS CORROSION INHIBITORS FOR LOW-CARBON STEEL IN ACIDIC MEDIA

2021 ◽  
Vol 11 (4) ◽  
pp. 254-262
Author(s):  
A. S. Kalinina ◽  
◽  
I. S. Polkovnikov ◽  
A. B. Shein ◽  
◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitors ◽  
High Efficiency ◽  
Protective Action ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Acidic Media ◽  
Inhibiting Effect ◽  
Kinetics Of ◽  
Steel St3

The inhibiting effect of some compositions of «Soling» series on low-carbon steel St3 in solutions of 5% and 15% HCl and 5% H2SO4 has been studied by the methods of polarization and gravimetric measurements. The protective action and the coefficient of inhibition of the corrosion process are calculated, the slopes of the Tafel sections in the cathode and anode regions of the polarization curves have been calculated. The influence of inhibitors on the kinetics of partial electrochemical reactions has been determined. The state of the surface of the samples has been estimated using micrographs. The high efficiency of inhibitors in acidic media has been shown.

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