Influence of pH on corrosion behavior of carbon steel in simulated cooling water containing scale and corrosion inhibitors

2020 ◽  
Vol 71 (8) ◽  
pp. 1266-1275
Author(s):  
Jiahui Yao ◽  
Honghua Ge ◽  
Yi Zhang ◽  
Xiaojie Wang ◽  
Siyu Xie ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Behavior ◽  
Corrosion Inhibitors ◽  
Cooling Water ◽  
Influence Of Ph

Influence of Electromagnetic Treatment on Corrosion Behavior of Carbon Steel and 316L Stainless Steel in Simulated Cooling Water

2011 ◽  
Vol 347-353 ◽  
pp. 3135-3138
Author(s):  
Hong Hua Ge ◽  
Jie Ting Tao ◽  
Xiao Ming Gong ◽  
Cheng Jun Wei ◽  
Xue Min Xu
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Corrosion Behavior ◽  
316L Stainless Steel ◽  
Cooling Water ◽  
Stainless Steel Electrode ◽  
Transfer Resistance ◽  
Steel Electrode ◽  
Pitting Potential ◽  
Electromagnetic Treatment

Abstract: The effect of electromagnetic treatment on corrosion behavior of carbon steel and stainless steel in simulated cooling water was investigated by electrochemical impedance spectroscopy, potentiodynamic polarization techniques and water analysis. It was found that the charge transfer resistance decreased and the corrosion current density increased after electromagnetic treatment for carbon steel electrode, which shows that such treatment promotes corrosion of carbon steel in simulated cooling water. In contrast, the pitting potential of 316L stainless steel electrode rose which revealed that electromagnetic treatment of the experimental water exhibited corrosion inhibition to 316L stainless steel. Reasons for different corrosion behavior of the two metals were discussed.

scholarly journals Organic Phosphorus Compounds as Inhibitors of Corrosion of Carbon Steel in Circulating Cooling Water: Weight Loss Method and Thermodynamic and Quantum Chemical Studies

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Liang Liu ◽  
Ting-Ting Cao ◽  
Qi-Wei Zhang ◽  
Chong-Wei Cui
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Organic Phosphorus ◽  
Cooling Water ◽  
Circulating Cooling Water ◽  
Weight Loss Method ◽  
Corrosion Inhibition Efficiency ◽  
Loss Method

Circulating cooling water plays an important role in industrial water use. In this study, the corrosion inhibition effects of PBTCA, HEDP, and ATMP organic phosphorus inhibitors were investigated using the weight loss method by varying the dosage of inhibitors, ClO2 concentrations, and pH values on carbon steel in recirculating cooling water with a low concentration of ClO2 solution. The results showed that the three corrosion inhibitors had a satisfactory corrosion inhibition effect and that corrosion inhibition efficiency is positively correlated with the concentration of organic phosphorus inhibitors and pH. The average corrosion inhibition efficiency of the three inhibitors was about 80% at the concentration of inhibitors = 35 mg/L, pH = 9.0, and the concentration of ClO2 = 7.0 mg/L, of which the single-phosphorus molecular corrosion inhibitor proved to be the best inhibitor. When the ClO2 concentration was 7 mg/L, the corrosion inhibition efficiencies of the three corrosion inhibitors were relatively stable. Using the density functional theory (DFT) algorithm in the Gaussian 09 program, the optimization calculation was completed by the B3LYP/6-31G (d, p) method at the microlevel. The molecular structures of the three organic phosphorus inhibitors and the number of phosphorus-containing atoms were compared to the sustained-release properties. Organic phosphorus inhibitors, as an electronic buffer, not only provided electrons but also received electrons. They formed a complex with iron and zinc ions in water in order to attach to the surface of the carbon steel and to alleviate corrosion. In addition, the adsorption with a metal surface followed the Langmuir adsorption isotherm.

scholarly journals The Influence of pH on Localized Corrosion Behavior of X65 Carbon Steel in CO2-Saturated Brines

CORROSION ◽  
10.5006/1770 ◽  
2015 ◽  
Vol 71 (12) ◽  
pp. 1452-1466 ◽  
Author(s):  
Frederick Pessu ◽  
Richard Barker ◽  
Anne Neville
Keyword(s):  
Carbon Steel ◽  
Corrosion Behavior ◽  
Localized Corrosion ◽  
Influence Of Ph

Commercial aqueous additives as used eco-friendly corrosion inhibitors for carbon steel in natural seawater

2020 ◽  
Vol 65 (1) ◽  
pp. 77-82
Author(s):  
Simona CAPRARESCU ◽  
◽  
Violeta PURCAR ◽  
Cristina MODROGAN ◽  
◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitors ◽  
Natural Seawater

Corrosion Behavior of The Weld Zone of Carbon Steel Overpack for HLW Geological Disposal

2008 ◽  
Author(s):  
Yutaka Yokoyama ◽  
Rieko Takahashi ◽  
Hidekazu Asano ◽  
Naoki Taniguchi ◽  
Morimasa Naito
Keyword(s):  
Carbon Steel ◽  
Corrosion Behavior ◽  
Weld Zone ◽  
Geological Disposal

Experimental and Computational Study of Ecofriendly Synthesize d Imine Cationic Surfactants as Corrosion Inhibitors for Carbon Steel in 1 M HCl

2020 ◽  
Vol 57 (1) ◽  
pp. 45-56 ◽  
Author(s):  
Eman A. Ghiaty ◽  
Dalia E. Mohamed ◽  
Emad A. Badr ◽  
Elshafie A. M. Gad ◽  
Elsayed A. Soliman ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Cationic Surfactants ◽  
Corrosion Inhibitors ◽  
Computational Study
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