Corrosion inhibition performance of a metallic zinc corrosion inhibitor in chemical cleaning

2020 ◽  
Vol 187 ◽  
pp. 42-46
Author(s):  
Changshan Huang ◽  
Jinying Wu ◽  
Ming Ding ◽  
Min Chen ◽  
Huiwu Xu ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Metallic Zinc ◽  
Chemical Cleaning ◽  
Zinc Corrosion ◽  
Inhibition Performance

The Preparation and Research on Multifunctional Environmentally Friendly Corrosion Inhibitor of Chemical Cleaning

2014 ◽  
Vol 664 ◽  
pp. 70-74
Author(s):  
Li Hui Zhang ◽  
Zhen Fa Liu ◽  
Ru Hui Guo
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Environmentally Friendly ◽  
Experimental Results ◽  
Chemical Cleaning ◽  
Iron And Steel ◽  
Corrosion Tests ◽  
Inhibition Performance

A kind of multifunctional environmentally friendly corrosion inhibitor (DHS) was prepared in order to protect many kinds materials from corrosion in iron and steel enterprise. The corrosion inhibition performance was studied by rotary hanging-piece corrosion tests . And biodegradability was investigated by biodegradation experiments . The experimental results showed that DHS has good performance both on corrosion inhibition and biologic degradable. It was suitable for the serious of materials and presense in iron and steel enterprise when the concentration of DHS was 0.4%. And the efficiency of biodegradability was 52.45% in 28d .

The Preparation and Performance of a Multifunctional Corrosion Inhibitor in Seawater

2013 ◽  
Vol 773 ◽  
pp. 704-708
Author(s):  
Xin Wang ◽  
Zhen Fa Liu ◽  
Zhan Liu ◽  
Yun Juan Wu ◽  
Li Hui Zhang
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Zinc Sulfate ◽  
Inhibition Rate ◽  
Sodium Gluconate ◽  
Polyaspartic Acid ◽  
Corrosion Tests ◽  
And Performance ◽  
Inhibition Performance

A multifunctional corrosion inhibitor was prepared from polyaspartic acid (PASP), sodium gluconate,zinc sulfate,hydroxyphosphonoacetic acid (HPAA) and benzotriazole (BTA). The performance of corrosion inhibition was evaluated by rotary hanging-piece corrosion tests and steady polarization. The result showed that the corrosion inhibitor was an anodic inhibitor and had good corrosion inhibition performance both on A3 carbon steel and H62 copper in seawater. The corrosion inhibition rate of A3 carbon steel was 93.15% and the corrosion inhibition rate of H62 copper was 93.55% when the concentration of corrosion inhibitor was 150 mgL-1in seawater at 40°C.

Research on Synthesis and Complex of Corrosion Inhibitor for Blast Furnace Gas Pipeline

2014 ◽  
Vol 1010-1012 ◽  
pp. 626-629
Author(s):  
Xing Cheng ◽  
Yan Chun Huang ◽  
Xiao Ling Deng ◽  
Shu Ting Mei ◽  
Hu Zhang ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Inhibitory Effect ◽  
Electrochemical Process ◽  
Gas Pipeline ◽  
Blast Furnace Gas ◽  
Weight Loss Method ◽  
Loss Method ◽  
Inhibition Performance

4-(N,N-dibutylaminomethyl) morpholine salt (DBM) was synthesized with morpholine，di-n-butylamine，paraformaldehyde under acid condition and characterized by IR. According to corrosion reason and characteristic of blast furnace gas pipeline, DBM, cyclohexylamine, ethanolamine, propargyl alcohol, etc were chosen as composition of compound corrosion inhibitor formulations, and their corrosion inhibition performance were evaluated by weight-loss method and electrochemical method. The results showed that the yield of DBM was 93.95% when mole ratio of morpholine, di-n-butylamine and paraformaldehyde was 1:1.2:1.2 and reaction temperature was 60 °C, reaction time was 5 h. The compound corrosion inhibitor containing DBM exhibited good inhibitory effect to cathode electrochemical process to the corrosion of A3 carbon steel cathode electrochemical process and the corrosion inhibition efficiency was 98.46%.

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.

Development and Mechanism of Multiple Non-Phosphorus Corrosion Inhibitor

2012 ◽  
Vol 531 ◽  
pp. 338-341
Author(s):  
Mei Fang Yan ◽  
Zhen Fa Liu ◽  
Li Hui Zhang ◽  
Rui He
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Itaconic Acid ◽  
Electrochemical Process ◽  
Inhibition Rate ◽  
Sodium Gluconate ◽  
Polyaspartic Acid ◽  
Adsorbed Film ◽  
Inhibition Performance

A multiple non-phosphorus corrosion inhibitor was prepared by mixing polyaspartic acid with itaconic acid homopolymer, sodium gluconate and surfactant alkylolamide in a certain proportion. The corrosion inhibition performance was tested and the mechanism was studied by electrochemical process. The results showed that synergies among components of the agent made the corrosion inhibition rate on carbon steel reach up to 96.96%. This mainly because that a dense adsorbed film formed on the surface of the carben steeel.

scholarly journals Evaluation of extracellular polymeric substances extracted from waste activated sludge as a renewable corrosion inhibitor

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7193 ◽  
Author(s):  
Liew Chien Go ◽  
William Holmes ◽  
Dilip Depan ◽  
Rafael Hernandez
Keyword(s):  
Activated Sludge ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Corrosion Inhibitors ◽  
Extracellular Polymeric Substances ◽  
Value Added ◽  
Total Solid ◽  
Waste Activated Sludge ◽  
Inhibition Performance

Background Waste activated sludge (WAS) has recently gained attention as a feedstock for resource recovery. The aim of this study is to investigate the corrosion inhibition efficiencies of extracellular polymeric substances (EPS) extracted from WAS. Methods The studied corrosion inhibitors were tested with carbon steel in 3.64% NaCl saturated with CO2 at 25 °C, which is the typical oilfield environment. They were first prepared by EPS extraction (heating at 80 °C), followed by centrifugation for solid and liquid separation, then the supernatant was freeze-thawed five times for sterilization of microorganisms in WAS to terminate metabolic activities in the test inhibitors to ensure consistency in corrosion inhibition. The EPS mixture (supernatant) was then deemed as the test corrosion inhibitor. The inhibition performance was determined using potentiodynamic polarization scans. Results Waste activated sludge alone showed unsatisfactory inhibition. However, EPS extracted from WAS showed an optimum inhibition of approximately 80% with 1,000 mg/L of inhibitor. The average total solid (TS) and EPS contents of the WAS were 7,330 mg TS/L WAS and 110 mg EPS/g TS, respectively. Three sets of extracted EPS were scanned with fourier-transform infrared spectroscopy (FTIR) and showed almost overlapping curves, yielding the consistent inhibition performance. Discussion The potentiodynamic polarization results indicated that EPS acts as a mixed-type inhibitor which inhibits corrosion on both anode and cathode sites of metal surfaces. Based on the FTIR results, it was assumed that major chemical groups O–H, N–H, C–N, C=O, and C–H contributed to the inhibition by adsorbing on the metal surface, forming a biofilm that acts as a protective barrier to isolate the metal from its corrosive environment. Results show that WAS EPS corrosion inhibitors have inhibition performance comparable to commercial products, signifying their potential in commercialization. This corrosion inhibitor is renewable, biodegradable, non-toxic, and free from heavy metal, making it a superior green corrosion inhibitor candidate. Additionally, turning biomass into value-added product can be beneficial to the environment and, in this case, deriving new materials from WAS could also transform the economics of wastewater treatment operations.

Study on Corrosion Inhibition of Compound Corrosion Inhibitor of Molybdate in Seawater

2012 ◽  
Vol 581-582 ◽  
pp. 755-758
Author(s):  
Ying Li Wei ◽  
Ya Qiang Tian ◽  
Yue Hua Wang ◽  
Xiao Hong Yang
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Corrosion Inhibitors ◽  
Electrochemical Polarization ◽  
Quaternary Compound ◽  
Weight Loss Method ◽  
Loss Method ◽  
Inhibition Performance

The corrosion inhibition performance of molybdate and molybdate compound corrosion inhibitor of carbon steel in seawater were tested using weight loss method, electrochemical polarization curve, and the quaternary compound molybdate corrosion inhibitor were made sure through the experiments. The experiment results show that the compound corrosion inhibitors have obvious synergistic corrosion inhibition effects in the proportion of 40 mg/L molybdate, 10mg/L HEDP, 4mg/L Zn2+ and 50 mg/L glucose acid salts.

A Mannich base 1-phenyl-3-(1-pyrrolidinyl)-1-propanone: synthesis and performance study on corrosion inhibition for N80 steel in 15% hydrochloric acid

2016 ◽  
Vol 63 (2) ◽  
pp. 153-159 ◽  
Author(s):  
Yuan Pan ◽  
Fengtao Zhan ◽  
Zhifeng Lu ◽  
Yan Lin ◽  
Zhen Yang ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Mannich Base ◽  
Oil Well ◽  
Performance Study ◽  
Content Type ◽  
N80 Steel ◽  
Study Results ◽  
Inhibition Performance

Purpose – The purpose of this paper is to set out a study of a Mannich base, which was synthesized and used as an acidizing corrosion inhibitor first, and to the corrosion inhibitor mechanism. Design/methodology/approach – A Mannich base, 1-phenyl-3-(1-pyrrolidinyl)-propanone (PHPP), was synthesized with acetophenone, pyrrolidine and formaldehyde at pH = approximately 2-3. The structure of PHPP was characterized by elemental analysis and Fourier transform infrared spectroscopy (FTIR). The corrosion inhibition of PHPP on N80 steel in 15 per cent hydrochloric acid (HCl) was studied by weight loss method, scanning electron microscope (SEM) and energy dispersive X-ray analysis (EDAX), and the adsorption behavior of PHPP on the surface of N80 steel was discussed. Findings – The results showed that the inhibition efficiency reached to 99.8 per cent and corrosion rate was 2.65 g·m-2·h-1 at 0.6 per cent of PHPP concentration in 15 per cent HCl, which indicated that PHPP presented excellent corrosion inhibition performance. The results of SEM and EDAX analysis showed that PHPP could be absorbed on the surface of N80 steel. The adsorption process of PHPP on the surface of N80 steel was chemisorption. This process was spontaneous and obeyed Langmuir adsorption isotherm. Originality/value – It was found that PHPP presented excellent corrosion inhibition performance, and it is practicable to enhance oil production in oilfield development as a oil-well acidizing inhibitor. The study results can provide theoretical guidelines for the development of the inhibitor.

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