scholarly journals Corrosion Inhibition of Titanium in Acidic Media Containing Fluoride with Bixin

2009 ◽  
Vol 6 (4) ◽  
pp. 975-978 ◽  
Author(s):  
Jinendra Singh Chauhan ◽  
D. K. Gupta
Keyword(s):  
Corrosion Inhibitor ◽  
Sulphuric Acid ◽  
Corrosion Inhibition ◽  
Electrochemical Methods ◽  
Great Efficiency ◽  
Acidic Media ◽  
Temperature Range ◽  
Hcl Solution

The bixin in acidic media were tested for corrosion inhibition of Ti in 0.5 N sulphuric acid and 0.1 N HCl solution at 30 to 40 °C temperature range by electrochemical methods. It reveals that bixin works as a corrosion inhibitor in halide media and protect the metals from the corrosion with great efficiency

scholarly journals Study the corrosion inhibition of mix of caffeine and iodua for CT3 steel in 1M HCl solution by electrochemical methods

2017 ◽  
Vol 33 (3) ◽  
Author(s):  
Truong Thao
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Electrochemical Methods ◽  
Anodic Reaction ◽  
Mild Carbon Steel ◽  
Current Densities ◽  
Hcl Solution ◽  
Surface Observations

Abstract: Corrosion inhibition of mild carbon steel, CT3,  in 1.0 M HCl solution by iodide  (with different concentrations, from 0.1g/l to 5.0g/l), mix of caffeine and iodide was investigated by electrochemical methods and micro surface observations (SEM). Experiment result showed that: (1) as the concentration of iodide increases, the inhibition efficiency increases;  Iodide acts as a mix – type inhibitor but inhibits anodic reaction is predominant. (2) Mix of 1.0 g/l iodide ang caffeine acts as a typical mix – type inhibitor. the current densities of both of anodic and cathode are decline when concentration of caffeine is 1.0 g/l or more. Inhibition efficiency max is approximately 96% at concentration of 5.0 g/l caffeine, the inhibition efficiency maintained relatively stable within 5 days.  

Study of N-benzylidene derivatives synthesized as corrosion inhibitors for copper in HCl solution

RSC Advances ◽  
2015 ◽  
Vol 5 (30) ◽  
pp. 23357-23366 ◽  
Author(s):  
Mehdi Shabani-Nooshabadi ◽  
Mohsen Behpour ◽  
Faezeh Sadat Razavi ◽  
Masood Hamadanian ◽  
Vajihe Nejadshafiee
Keyword(s):  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Corrosion Inhibitors ◽  
Electrochemical Methods ◽  
Polarization Measurements ◽  
Benzylidene Derivative ◽  
Hcl Solution

Corrosion inhibition of the two N-benzylidene derivative compounds, as corrosion inhibitors for copper in HCl 6.0 M have been studied by electrochemical methods such as potentiodynamic polarization measurements and EIS.

Corrosion inhibition effect of spiropyrimidinethiones on mild steel in 15% HCl solution: insight from electrochemical and quantum studies

RSC Advances ◽  
2015 ◽  
Vol 5 (87) ◽  
pp. 70832-70848 ◽  
Author(s):  
M. Yadav ◽  
R. R. Sinha ◽  
Sumit Kumar ◽  
T. K. Sarkar
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Electrochemical Methods ◽  
Inhibition Effect ◽  
Hcl Solution

The effect of synthesized spiropyrimidinethiones on the corrosion of mild steel in 15% HCl solution was investigated by using weight loss and electrochemical methods.

scholarly journals Analysis of the Anti-Corrosion Performance of Dextrin and Its Graft Copolymer on J55 Steel in Acid Solution

Processes ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 1642
Author(s):  
Mingxing Liu ◽  
Dayu Xia ◽  
Ambrish Singh ◽  
Yuanhua Lin
Keyword(s):  
Contact Angle ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Graft Copolymer ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Inhibition Mechanism ◽  
Corrosion Inhibition Efficiency ◽  
Inhibition Performance ◽  
Hcl Solution

This paper studies the corrosion inhibition performance and mechanism of dextrin (Dxt) and its graft copolymer with caprolactam (Dxt-g-CPL) on J55 steel in 1 M HCl solution. Caprolactam is grafted and copolymerized with dextrin by a chemical synthesis method, to obtain a dextrin graft copolymer corrosion inhibitor. The composition of the synthesized graft copolymer was characterized by FTIR to identify whether the grafting was successful. Through weightlessness, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization curve (TAFEL), scanning electrochemical microscope (SECM), scanning electron microscope (SEM), and contact angle experiments, the graft copolymer to J55 steel in 1 M HCl solution and the corrosion inhibition performance were evaluated. Moreover, we discuss its corrosion inhibition mechanism. The dextrin graft copolymer has good corrosion inhibition performance for J55 in 1 M HCl solution. When the concentration of the corrosion inhibitor increases, the corrosion inhibition efficiency will also increase. At a certain concentration, when the temperature rises, the corrosion inhibition efficiency will gradually decrease. When the concentration is 300 mg/L, it has a better corrosion inhibition effect, and the corrosion inhibition efficiency is 82.38%. Potential polarization studies have shown that Dxt-g-CPL is a mixed corrosion inhibitor, which inhibits both the cathode and the anode of the electrode reaction. SEM, SECM, and contact angle analysis results show that Dxt-g-CPL can significantly inhibit corrosion. Compared with Dxt, Dxt-g-CPL has a better inhibitory effect.

scholarly journals Multidimensional Study On The Corrosion Inhibition of Polypyrrole-Chitosan (PPy-CTS) Composites For Carbon Steel In Acid Medium

2021 ◽  
Author(s):  
Baiyi Chen ◽  
Guohe Xu ◽  
Luyao Wang ◽  
Chen Zhang ◽  
Congcong Li ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
In Situ Polymerization ◽  
Economic Losses ◽  
Inhibition Mechanism ◽  
Physical Barrier ◽  
Anodic Protection ◽  
Inhibition Performance ◽  
Hcl Solution

Abstract The acidic corrosion of carbon steel is a great concern, which has caused serious economic losses on a global scale. Therefore, the exploitation of corrosion inhibition strategy for carbon steel and an in-depth study on its mechanism are of vital importance. Here we have developed a mixed type corrosion inhibitor of PPy-CTS, which incorporated the good solubility and adsorption capacity of chitosan (CTS) into the excellent corrosion inhibition performance of polypyrrole (PPy) by in-situ polymerization of pyrrole on CTS. The corrosion inhibition performance of PPy-CTS composites as a potential corrosion inhibitor for Q235 carbon steel in 1 M HCl solution was investigated by electrochemical (potentiodynamic polarization curve and AC impedance spectroscopy) and surface morphological (scanning electron microscopy and water droplet contact angle) characterization. The results revealed that PPy-CTS with the optimal concentration of 250 ppm achieved the highest corrosion inhibition efficiency of 91.1%. Subsequently, the corrosion inhibition mechanism was furtherly studied. Gibbs free energy obtained from the Langmuir isotherm model suggested that the absorption of PPy-CTS corrosion inhibitor on Q235 steel in 1 M HCl solution belonged to a combined type of physisorption and chemisorption, which resulted in the formation of a physical barrier preventing the carbon steel from corrosion. In addition, the conductive polymer PPy of corrosion inhibitor possessed an oxide-film anodic protection for carbon steel. Ultimately, PPy-CTS effectively suppressed the corrosion reaction of carbon steel in harsh acidic environment through the synergistic effect of physical barrier and anodic protection.

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