scholarly journals Adsorption and Corrosion Inhibition Effect of 2-Mercaptobenzimidazole (Surfactant) on a Carbon Steel Surface in an Acidic Medium: Experimental and Monte Carlo Simulations

2018 ◽  
Vol 36 (3) ◽  
pp. 197-212 ◽  
Author(s):  
F E Hajjaji ◽  
M E Belghiti ◽  
B Hammouti ◽  
S Jodeh ◽  
O Hamed ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Carbon Steel ◽  
Monte Carlo Simulations ◽  
Corrosion Inhibition ◽  
Acidic Medium ◽  
Steel Surface ◽  
Inhibition Effect ◽  
Carbon Steel Surface

scholarly journals Study on Synergistic Corrosion Inhibition Effect between Calcium Lignosulfonate (CLS) and Inorganic Inhibitors on Q235 Carbon Steel in Alkaline Environment with Cl−

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4200
Author(s):  
Bing Lin ◽  
Junlei Tang ◽  
Yingying Wang ◽  
Hu Wang ◽  
Yu Zuo
Keyword(s):  
Carbon Steel ◽  
Metal Oxides ◽  
Corrosion Inhibition ◽  
Steel Surface ◽  
Film Deposition ◽  
General Corrosion ◽  
Adsorption Film ◽  
Inhibition Effect ◽  
Q235 Carbon Steel ◽  
Complex Film

The synergistic corrosion inhibition effect between calcium lignosulfonate (CLS) and three kinds of inorganic inhibitors (Na2MoO4, Na2SnO3, and NaWO4) with various molar ratios on Q235 carbon steel in alkaline solution (pH 11.5) with 0.02 mol/L NaCl was investigated by cyclic potentiodynamic polarization, electrochemical impedance spectroscopy, linear polarization, scanning electron microscopy, and X-ray photoelectron spectroscopy. Molybdate and stannate in hybrid inhibitor could promote the passivation of steel and form a complex film, which could suppress the corrosion effectively. Moreover, the insoluble metal oxides in the complex film formed by three kinds of inorganic inhibitor could help the adsorption of CLS onto the steel surface. The CLS molecules could adsorb onto the steel surface and metal oxides to form an adsorption film to protect the steel from corrosion. A three-layer protection film formed by a hybrid inhibitor, including passivation film, deposition film, and adsorption film, would effectively inhibit the corrosion reactions on the steel surface. The CLS compound with molybdate with the ratio of 2:3 shows the best inhibition effect on both general corrosion and localized corrosion.

Inhibition of [NH2Et2][(4-MeC6H4O)2PS2] for Carbon Steel in Hydrochloric Acid Solution

2011 ◽  
Vol 239-242 ◽  
pp. 716-719
Author(s):  
Zhen Xiang ◽  
Xue Yang ◽  
Bin Xie ◽  
Li Ke Zou ◽  
Yang Guang Xiang ◽  
...  
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Mixed Type ◽  
Steel Surface ◽  
Standard Free Energy ◽  
Free Energy Of Adsorption ◽  
Inhibition Effect ◽  
Carbon Steel Surface ◽  
Hcl Solution ◽  
Mixed Type Inhibitor

The inhibition effect of N,N-diethylammonium O,O'-di(4-Methylpheny)dithiophosphate (NOPP, [NH2Et2][(4-MeC6H4O)2PS2])against the corrosion of carbon steel in HCl solution was studied by weight loss measurements, electrochemical measurements, AFM and SEM techniques. The studies of weight loss measurements indicate that the NOPP acts as a good inhibitor for the corrosion of carbon steel in HCl solution. Polarization curves indicate NOPP is a mixed-type inhibitor. The adsorption of NOPP on carbon steel surface obeys the Langmuir isotherm, and the obtained standard free energy of adsorption suggests that the chemisorption takes place spontaneously.

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