Novel carbon dots as effective corrosion inhibitor for N80 steel in 1 M HCl and CO2-saturated 3.5 wt% NaCl solutions

2021 ◽  
pp. 131897
Author(s):  
Xiaodan Wu ◽  
Jianbo Li ◽  
Chaoyi Deng ◽  
Lan Yang ◽  
Jie Lv ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Carbon Dots ◽  
N80 Steel

scholarly journals Mannich Base as Corrosion Inhibitors for N80 Steel in a CO2 Saturated Solution Containing 3 wt % NaCl

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 449 ◽  
Author(s):  
Mingjin Tang ◽  
Jianbo Li ◽  
Zhida Li ◽  
Luoping Fu ◽  
Bo Zeng ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Steel Sheet ◽  
Mannich Base ◽  
Saturated Solution ◽  
Control Group ◽  
Protective Film ◽  
Blank Control Group ◽  
Inhibition Effect ◽  
N80 Steel

In this paper, a corrosion inhibitor containing nitrogen atoms and a conjugated π bond was synthesised, and its final product synthesised by the optimal conditions of the orthogonal test results is named multi-mannich base (MBT). The corrosion inhibition effect on the N80 steel sheet of the corrosion inhibitor was evaluated in a CO2 saturated solution containing 3 wt % NaCl; the corrosion rate was 0.0446 mm/a and the corrosion inhibition rate was 90.4%. Through electrochemical and adsorption theory study, MBT is a mixed corrosion inhibitor that mainly shows cathode suppression capacity. The adsorption of MBT on the surface of the steel sheet follows the Langmuir adsorption isotherm; it can be spontaneously adsorbed on the surface of the N80 steel sheet, which has a good corrosion inhibition effect. The surface of the N80 steel sheet was microscopically characterised by atomic force microscope (AFM). It can be seen from the results that the N80 steel sheet with MBT added is significantly different from the blank control group; the surface of the steel sheet is relatively smooth, indicating that MBT forms an effective protective film on the surface of N80 steel, which inhibits the steel sheet.

Carbon Dots as Green Corrosion Inhibitor for Mild Steel in HCl Solution

2020 ◽  
Vol 5 (25) ◽  
pp. 7347-7357 ◽  
Author(s):  
Vandana Saraswat ◽  
Mahendra Yadav
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Carbon Dots ◽  
Green Corrosion Inhibitor ◽  
Hcl Solution

Functionalized 2-hydrazinobenzothiazole with carbohydrates as a corrosion inhibitor: electrochemical, XPS, DFT and Monte Carlo simulation studies

2019 ◽  
Vol 3 (5) ◽  
pp. 931-940 ◽  
Author(s):  
Parinita Shaw ◽  
I. B. Obot ◽  
M. Yadav
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibitors ◽  
Acidic Environment ◽  
Simulation Studies ◽  
N80 Steel

Studies on hydrazinobenzothiazole compounds as efficient corrosion inhibitors for N80 steel in an acidic environment.

Corrosion and inhibition of N80 steel in 5% HCl solution by SA1-3

2017 ◽  
Vol 64 (6) ◽  
pp. 634-643 ◽  
Author(s):  
Liqiang Zhao ◽  
Yanhua Zhu ◽  
Pingli Liu ◽  
Jian Zhang ◽  
Yigang Liu
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Behavior ◽  
Theoretical Basis ◽  
Inhibition Mechanism ◽  
Corrosion Mechanism ◽  
Protective Film ◽  
Content Type ◽  
N80 Steel ◽  
Weight Loss Method ◽  
Hcl Solution

Purpose This paper aims to describe the corrosion behavior and possibility of inhibition by corrosion inhibitor SA1-3 in acidizing solution (5 per cent hydrochloric acid [HCl] solution). The study aims to explain the mechanism of corrosion and inhibition of N80 steel in 5 per cent HCl solution to provide theoretical basis for expanding the range of application of N80 steel in acidification process. Design/methodology/approach This paper opted for a laboratory study using simulation of acidizing solution to do the experiments. The results of experiments including weight-loss method, electrochemical method and surface analysis were used to explain the mechanism of corrosion and inhibition so as to predict the dissolution progress of N80 steel in 5 per cent HCl solution with and without inhibitor SA1-3. Findings This paper provides theoretical insights about how to inhibit the corrosion behavior of N80 steel in 5 per cent HCl solution. It suggests that the corrosion inhibitor which can form a protective film on the steel surface should be used to expand the application of N80 steel in acidizing solution. The inhibitor SA1-3 is a kind of cathodic corrosion-controlling inhibitor which mainly inhibits cathode corrosion; it cannot change the corrosion mechanism of N80 steel. Originality/value This paper provides a theoretical basis for the corrosion behavior and inhibition mechanism of N80 steel in acidizing solution.

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