Article
Chemistry, Analytical
Eugene B. Caldona, Min Zhang, Guangchao Liang, T. Keith Hollis, Charles Edwin Webster, Dennis W. Smith, David O. Wipf
Summary: This study demonstrated the inhibition effect of triazole- and imidazole-based compounds on the corrosion of mild steel in 1.0 M HCl solution through electrochemical measurements. Among these compounds, the triazole-based compound exhibited the highest inhibitive performance at a concentration of 850 μM, showing an efficiency of over 90%. The results were supported by microscopy analyses and x-ray diffraction, confirming the protective inhibitor layer formation on the metal surface.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Applied
Jiansan Li, Wenjing Zhang
Summary: In this research, sodium gluconate-loaded chitosan microspheres (SG/CM) were prepared using negative pressure impregnation after hydrothermal synthesis of chitosan microspheres (CM) with vanillin (VA). The structures and morphologies of the prepared materials were analyzed using FTIR, SEM, and TEM. The thermogravimetric characterization showed that loading sodium gluconate enhanced the thermal stability. The corrosion inhibition performance of CS, CM, and SG/CM in 0.1 mol/L HCl was investigated using EIS and PDP tests, with SG/CM showing the highest inhibition efficiency.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Environmental Sciences
Deepak Sharma, Abhinay Thakur, Manish Kumar Sharma, Renu Sharma, Suresh Kumar, Ashish Sihmar, Hariom Dahiya, Gaurav Jhaa, Ashish Kumar, Ashok Kumar Sharma, Hari Om
Summary: This study evaluated the corrosion-inhibition efficacy of two 1,3,4-oxadiazole derivatives, POX and 4-PMOX, against mild steel corrosion in 1 N HCl. The evaluation was conducted using weight loss, Electrochemical Impedance Spectroscopy (EIS), Potentiodynamic Polarization (PDP), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX), UV-Vis spectroscopy, and theoretical analysis. Both POX and 4-PMOX showed excellent inhibition efficiency, with values reaching 97.83% and 98% at 500 ppm, respectively. The findings of this study provide valuable insights for the design of more efficient organic inhibitors for metal corrosion.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Chemical
Aysen Kelesoglu, Gokmen Sigircik, Resit Yildiz, Ilyas Dehri
Summary: Pyrazinecarboxylic acid (PCA) has been identified as a potential corrosion inhibitor for mild steel in 0.5 M HCl environment, showing a high inhibition efficiency of 95.2%. Experimental and theoretical calculations revealed the formation of an adsorptive layer on the steel surface by PCA, leading to a significant corrosion inhibition effect.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Raj Kumar Mehta, Mahendra Yadav, I. B. Obot
Summary: This study investigated the anti-corrosion behavior of MTPT and PDPT inhibitors in a 15% HCl solution on oil well and pipeline steel tubes. The results showed that both inhibitors had excellent inhibitory effects and could control both the anodic and cathodic reactions.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Oluwafemi J. Sanumi, Oluwaseyi D. Saliu, Mamookho E. Makhatha
Summary: The research indicates that PEGT1% performs excellently as a corrosion inhibitor for mild steel in 1M HCl, showing better corrosion protection compared to PEGT3%. Principal component analysis revealed that surface area and activity per site were the most important factors in the corrosion rate study.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Inorganic & Nuclear
Badr Baach, Moussa Ouakki, Soumya Ferraa, Hanane Barebita, Mohammed Cherkaoui, Abderrazak Nimour, Taoufik Guedira
Summary: New crystalline compounds based on an oxygen-deficient fluorite structure were synthesized and tested as corrosion inhibitors for mild steel in hydrochloric acid solution. The inhibitor efficiency was observed to increase with concentration, reaching a maximum of 93.7% for one compound at room temperature. The inhibitors exhibited excellent performance, although their effectiveness decreased at higher temperatures. Thermodynamic parameters were also calculated and discussed.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Denise Hanoz, Alessio G. Settimi, Manuele Dabala
Summary: This study focused on obtaining a black coating on a low carbon steel surface using three different solutions, revealing that the protective layer obtained through 15 minutes immersion at boiling point was dense and adherent, while longer or shorter immersion times resulted in non-uniform layers with porosities. The use of a cold solution led to an uneven layer and reduced corrosion resistance. The morphology, color, defects, composition, and corrosion resistance of the protective layer were evaluated through various microscopic and spectroscopic techniques.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Klicia Carla de Santana de Lima, Victor Magno Paiva, Marcos Gustavo Araujo Schwarz, Nathalia Martins Bomfim Barreto, Daniel Perrone, Eliane D'Elia
Summary: This research examined the corrosion inhibition effect of three extracts from soybean meal and a soybean protein commercial sample on mild steel, using mass loss tests, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP). The soybean meal extracts' anti-corrosive properties were investigated by normalizing the peptide/protein amount. The inhibitors were characterized chemically and the surface of mild steel was studied by scanning electron microscopy (SEM). The results showed that all inhibitors showed the same inhibition efficiency when the normalization in peptide/protein amount was performed, indicating that proteins/peptides are responsible for inhibiting corrosion. For example, at 100 mg L-1 in protein content, the inhibition efficiency was 84% and 82% from EIS and PDP results, and 89% and 93-94% after 2 and 24 h immersion time, respectively, from mass loss measurements. Polarization curves indicated that all inhibitors behave as a mixed-type inhibitor, particularly for the cathodic branch. SEM results suggested that all extracts promoted a protective action against corrosion of the mild steel in H2SO4 solution.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Polymer Science
Zhongyu Huang, Lihong Liu, Bing Lei, Guozhe Meng, Zhiyuan Feng, Honglei Guo, Bokai Liao, Ping Zhang
Summary: A new imidazole derivative corrosion inhibitor was synthesized and its corrosion inhibition performance was evaluated for Q235 carbon steel in a 3.5 wt. % NaCl acidic solution. The results showed that this inhibitor offers excellent corrosion protection performance and provides a new strategy for carbon steel corrosion protection.
Article
Biochemistry & Molecular Biology
Bahaa Sami Mahdi, Muna Khethier Abbass, Mustafa Khudhair Mohsin, Waleed Khalid Al-azzawi, Mahdi M. Hanoon, Mohammed Hliyil Hafiz Al-kaabi, Lina M. Shaker, Ahmed A. Al-amiery, Wan Nor Roslam Wan Isahak, Abdul Amir H. Kadhum, Mohd S. Takriff
Summary: In this study, we investigated the corrosion-inhibition performance of PMBMH as an inhibitor for mild steel in hydrochloric acid solution. The results showed that PMBMH effectively reduced the corrosion rate and increased the inhibitory efficacy. Experimental and theoretical findings indicated that PMBMH formed a protective adsorption layer on the mild-steel surface, contributing to the inhibition of corrosion.
Article
Materials Science, Multidisciplinary
A. S. Sowmyashree, Amita Somya, Srilatha Rao, C. B. Pradeep Kumar, Abeer Nasser Al-Romaizan, Mahmoud A. Hussein, Anish Khan, Hadi M. Marwani, Abdullah M. Asiri
Summary: Green corrosion inhibitors, such as Citrus limetta peel extract, have gained attention for their cost-effectiveness, biodegradability, and eco-friendly characteristics in inhibiting the corrosion of metallic alloys. This study investigates the corrosion inhibition efficiency of Citrus limetta peel extract on mild steel surfaces in an acidic environment using electrochemical methods. The results demonstrate that the extract exhibits a corrosion inhibition efficiency of 93% on mild steel surfaces in hydrochloric acid media. The adsorption mechanism of the peel extract on mild steel surfaces involves both physisorption and chemisorption.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
V. C. Anadebe, P. C. Nnaji, O. D. Onukwuli, N. A. Okafor, F. E. Abeng, V. I. Chukwuike, C. C. Okoye, I. I. Udoh, M. A. Chidiebere, Lei Guo, R. C. Barik
Summary: This study aims to investigate the detailed surface adsorption of the expired salbutamol drug molecule as an emerging anticorrosion additive for mild steel corrosion in oilfield acidizing fluid. Through experimental data analysis and modeling using weight loss, potentiodynamic polarization, and DFT studies, the maximum inhibition efficiencies and surface adsorption characteristics were obtained. Artificial neural network-genetic algorithm and adaptive neural fuzzy inference system-genetic algorithm were utilized for optimization, and their predictive capabilities were compared.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Multidisciplinary
Shuai Ren, Xi Wang, David Young, Maalek Mohamed -Said, Bernardo Santos, Yi He, Marc Singer
Summary: A thick cementite skeleton exposed on a ferritic-pearlitic C1018 steel surface significantly reduced inhibition efficiency after pre-corrosion, while this effect was insignificant for a lower carbon X65 steel with dispersed cementite microstructure, as only a small amount of cementite remained on its surface after pre-corrosion. Normalizing the increased cathodic area in the presence of residual cementite back to the original area inhibited both anodic and cathodic reactions to the same extent as on bare steel with a sufficient inhibitor concentration. However, the detrimental effect of cementite cannot be completely eliminated due to its galvanic coupling effect.
Article
Chemistry, Physical
B. Ould Abdelwedoud, M. Damej, K. Tassaoui, A. Berisha, H. Tachallait, K. Bougrin, V Mehmeti, M. Benmessaoud
Summary: This study examined the corrosion inhibition of C38 steel in hydrochloric acid using N-Propargyl Saccharin (NPS) as an inhibitor. The results showed that NPS acted as a mixed type inhibitor, reducing both the anode and cathode current densities. It also improved the charge transfer resistance of C38 steel and increased the thickness of the protective layer.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Chemical
K. Ramya, Abraham Joseph
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2015)
Article
Materials Science, Multidisciplinary
K. Ramya, Revathi Mohan, K. K. Anupama, Abraham Joseph
MATERIALS CHEMISTRY AND PHYSICS
(2015)
Article
Materials Science, Multidisciplinary
K. K. Anupama, K. Ramya, K. M. Shainy, Abraham Joseph
MATERIALS CHEMISTRY AND PHYSICS
(2015)
Article
Chemistry, Physical
K. K. Anupama, K. Ramya, Abraham Joseph
JOURNAL OF MOLECULAR LIQUIDS
(2016)
Article
Chemistry, Physical
Revathi Mohan, K. Ramya, K. K. Anupama, Abraham Joseph
JOURNAL OF MOLECULAR LIQUIDS
(2016)
Article
Materials Science, Multidisciplinary
K. M. Shainy, K. K. Anupama, K. Ramya, Joseph Abraham
MATERIALS CHEMISTRY AND PHYSICS
(2016)
Article
Engineering, Chemical
K. Ramya, Revathi Mohan, Abraham Joseph
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2014)
Article
Chemistry, Multidisciplinary
K. Ramya, Abraham Joseph
RESEARCH ON CHEMICAL INTERMEDIATES
(2015)
Article
Engineering, Chemical
Rugmini P. Ammal, Anupama R. Prasad, K. Ramya, Sam John, Abraham Joseph
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2019)