scholarly journals Corrosion Inhibition of Carbon Steel in 2.0M HCl Solution Using Novel Extract (Pulicaria undulate)

2021 ◽  
Vol 12 (5) ◽  
pp. 6415-6427
Keyword(s):  
Carbon Steel ◽  
Impedance Spectroscopy ◽  
Corrosion Process ◽  
Effect Of Temperature ◽  
Corrosion Mechanism ◽  
Ac Impedance Spectroscopy ◽  
Influence Of Temperature ◽  
Adsorption Processes ◽  
Hcl Solution ◽  
Good Agreement

Plant Pulicaria undulate (PU) extract is examined as a corrosion inhibitor for carbon steel (CS) dipped in 2.0M HCl. The study was conducted utilizing ac impedance spectroscopy (EIS), Mass loss (ML), polarization (PDP) tests, and surface checks were utilized to illustrate the importance of this PU extract to prevent the corrosion process for CS. The influence of temperature and concentration of PU on the efficacy of inhibition were tested. The corrosion mechanism occurs when the PU extract molecules block the active center in the electrode surface. Langmuir isotherm is the isotherm that is applied in the process of adsorption. The effect of temperature at various temperatures on the corrosion efficacy was investigated in case of the presence and absence of the extract. Finally, thermodynamic parameters for the activation and adsorption processes were determined. Results of all methods used were in good agreement.

scholarly journals Eco-Friendly Approach to Corrosion Inhibition of Copper in HNO3 Solution by the Expired Tylosin Drug

2021 ◽  
Vol 12 (4) ◽  
pp. 5116-5130
Keyword(s):  
Weight Loss ◽  
Impedance Spectroscopy ◽  
Corrosion Process ◽  
Effect Of Temperature ◽  
Corrosion Mechanism ◽  
Ac Impedance Spectroscopy ◽  
Hno3 Solution ◽  
Influence Of Temperature ◽  
Inhibition Process ◽  
Good Agreement

Expired Tylosin Drug (ETD) is examined as corrosion inhibitor for copper (Cu) dipped in 2.0 M HNO3. The study was conducted utilizing ac impedance spectroscopy (EIS), weight loss (WL), polarization, and surface checks to illustrate the importance of this ETD to prevent the corrosion process for Cu. The influence of temperature and concentration of ETD on the efficiency of inhibition were tested. The corrosion mechanism occurs when the ETD molecules block the active center in the electrode surface. Langmuir isotherm is the isotherm that is applied in the process of adsorption. The effect of temperature at various temperatures on the corrosion efficiency was investigated in case of the presence and absence of ETD. Finally, thermodynamic parameters for the inhibition process were determined. Results were of all methods used are in good agreement.

The Proton Pump Inhibitor (Lansoprazole Drug) As a Corrosion Inhibitor for High Carbon Steel in Hydrochloric Acid Solution

2021 ◽  
Author(s):  
Ameena M. Al-bonayan ◽  
Ahmed El-Hossiany ◽  
Dalia M. Eid ◽  
Abd El-Aziz S. Fouda
Keyword(s):  
Carbon Steel ◽  
Proton Pump Inhibitor ◽  
Corrosion Inhibitor ◽  
Proton Pump ◽  
High Carbon Steel ◽  
Outcome Data ◽  
Corrosion Mechanism ◽  
High Carbon ◽  
Good Agreement ◽  
Mixed Type Inhibitor

Abstract The proton pump inhibitor lansoprazole (PPIL) drug is examined as corrosion inhibitor for high carbon steel (HCS) dipped in 1.0M HCl. The study was conducted utilizing ac impedance spectroscopy (EIS), Mass loss (Ml), polarization tests, and surface checks were utilized to illustrate the importance of this PPIL extract to the prevent corrosion process for HCS. The influence of temperature and concentration of PPIL on the efficiency of inhibition were tested. The corrosion mechanism occurs, when the PPIL extract molecules block the active center in the electrode surface. The inhibition efficiency (%IF) of HCS occurs by the adsorption procedure and HCS is subject to the adsorption of Langmuir. Polarization curves showed that PPIL drug is a mixed- type inhibitor that retards the dissolution of HCS. IF % was deliberated with altering in the concentration of PPIL various temperature of the medium. From the outcome data we get that the good agreement in the all methods.

Crevice Corrosion Behaviors of X52 Carbon Steel in Chloride Containing Solutions

2013 ◽  
Vol 652-654 ◽  
pp. 1432-1435
Author(s):  
Qian Hu ◽  
Jing Liu ◽  
Jie Zhang ◽  
Feng Huang ◽  
Xing Peng Guo
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Carbon Steel ◽  
Impedance Spectroscopy ◽  
Crevice Corrosion ◽  
Electrochemical Noise ◽  
Electrochemical Impedance ◽  
Corrosion Process ◽  
Nacl Solution ◽  
Concentration Difference ◽  
Corrosion Behaviors

The crevice corrosion behaviors of X52 carbon steel in two typical Cl--containing solutions were investigated by electrochemical noise and electrochemical impedance spectroscopy. Results show that oxygen concentration difference leads to the coupled current in NaCl + NaHCO3 solution while HAc concentration difference causes the coupled current in NaCl solution saturated with CO2 in the presence of HAc. There exists an apparent incubation stage during the crevice corrosion process of X52 carbon steel in the former. However, no obvious incubation period of crevice corrosion can be observed in the latter. Micrography shows that the crevice corrosion occurs indeed and the corrosion inside the crevice is not uniform.

scholarly journals Quantitative Understanding of the Environmental Effect on B10 Copper Alloy Corrosion in Seawater

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1080
Author(s):  
Yikun Cai ◽  
Yuanming Xu ◽  
Yu Zhao ◽  
Weifang Zhang ◽  
Jinghua Yao ◽  
...  
Keyword(s):  
Copper Alloy ◽  
Orthogonal Experiment ◽  
Outdoor Exposure ◽  
Influential Factors ◽  
Corrosion Process ◽  
Effect Of Temperature ◽  
Corrosion Mechanism ◽  
Natural Seawater ◽  
Experimental Conditions ◽  
Marine Corrosion

Corrosion in natural seawater is difficult to simulate in a laboratory due to the slow rate and complexity of the corrosion process which involves multiple influential factors. This paper aims to explore the quantitative effect of environmental factors on corrosion process and find the best experimental conditions which represent the actual environment and have the best acceleration effect. A new framework is followed in this paper which consists of three parts: design of experiments, outdoor and laboratory corrosion tests, and corrosion mechanism consistency confirmation. A L6(31 × 22) orthogonal experiment is designed in laboratory to study the effect of temperature, salinity, and dissolved oxygen on marine corrosion behavior of B10 copper alloy. In each test, H2O2 is added in seawater to accelerate the corrosion process. Outdoor exposure tests are also conducted in natural seawater. Results show that the corrosion process in laboratory and outdoor follows the same mechanism, in view of corrosion product and morphology, corrosion kinetics, as well as mechanical properties. With the help of quantitative analysis of the test results, a better acceleration condition can be designed.

Effect of NO2 Concentration on Sensitivity for High Temperature Impedancemetric NOx Sensors

2013 ◽  
Vol 544 ◽  
pp. 372-375
Author(s):  
Hong Qin Wang ◽  
Ge Ming Liu ◽  
Niu Sheng Peng ◽  
Tao Feng ◽  
Jin Feng Xia ◽  
...  
Keyword(s):  
High Temperature ◽  
Impedance Spectroscopy ◽  
Nitrogen Oxides ◽  
Oxygen Sensor ◽  
Ac Impedance ◽  
Ac Impedance Spectroscopy ◽  
Influence Of Temperature ◽  
Gas Concentration ◽  
Automobile Exhaust ◽  
Nox Sensor

With the growing problem of automobile exhaust pollution, the study of automotive oxygen sensor is very meaningful, nitrogen oxides accounts for a large proportion of automobile exhaust. AC impedance spectroscopy of the NOx sensor in different temperature(500°C，600°C，700°C) and NO2 of different concentrations （100ppm，500ppm，1000ppm）in this paper, the influence of temperature and gas concentration on NOx sensors is explored.

scholarly journals Corrosion Inhibition of Low Carbon Steel in 1 M HCl Solution by Cephalexin Monohydrate Drug and Synergistic Iodide Additives

2020 ◽  
Vol 11 (1) ◽  
pp. 8550-8563
Keyword(s):  
Carbon Steel ◽  
Mixed Type ◽  
Inhibition Efficiency ◽  
Low Carbon Steel ◽  
Drug Dose ◽  
Outcome Data ◽  
Low Carbon ◽  
Corrosion Performance ◽  
Ac Impedance Spectroscopy ◽  
Hcl Solution

The effect of Cephalexin monohydrate drug on the corrosion performance of low carbon steel (LCS) in 1 M HCl solution has been examined by weight reduction (WR), potentiodynamic polarization (PP) and AC impedance spectroscopy (EIS) tests. The inhibition efficiency (IE) raised with increasing the cephalexin monohydrate drug dose but lowered with higher temperatures. The adsorption of the Cephalexin monohydrate drug established to follow Temkin isotherm. The PP tests designated that the cephalexin monohydrate drug is of mixed type. Synergism among iodide ion and cephalexin monohydrate drug was suggested. The outcome data gotten from the three altered tests were in excellent agreement. Theoretical relationships have been utilized to examine the influence of molecular structure on IE of the Cephalexin monohydrate drug.

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