Article
Electrochemistry
Javier E. Rodriguez-Yanez, Sebastian Feliu Batlle, Jean Sanabria-Chinchilla, Jose Felix Rojas-Marin
Summary: The corrosion level in tropical atmospheric conditions in Central America and The Caribbean is influenced by the exposure angle and the sample's orientation. The study shows a decrease in corrosion with increasing angle and variations in corrosion levels between different sides of the sample. Both classical and electrochemical methods provided consistent results.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Hassane Lgaz, Sourav Kr. Saha, Han-seung Lee, Namhyun Kang, Fatima Zahra Thari, Khalid Karrouchi, Rachid Salghi, Khalid Bougrin, Ismat Hassan Ali
Summary: Two thiazolidinedione derivatives were synthesized and applied for corrosion protection of copper in NaCl medium. The inhibitors significantly limited the dissolution of copper, with ATZD slightly outperforming MTZD due to the presence of an additional -C3H5 unit in its molecular scaffold.
Article
Materials Science, Multidisciplinary
J. Mu, Y. Z. Li, X. Wang
Summary: The crevice corrosion of X70 steel varies in different pH solutions, with pH=2 and pH=12 solutions promoting crevice corrosion while pH=6.8 solution prevents it. The increase of pH and Cl- inside crevice contribute to crevice corrosion in pH=2 solution, while the decrease of pH and increase of Cl- inside crevice lead to crevice corrosion in pH=12 solution.
Article
Metallurgy & Metallurgical Engineering
Chunlong Cheng, Qichi Le, Liang Chen, Wenxin Hu, Tong Wang, Baosong Zhu, Xiong Zhou
Summary: The effect of oxide layer on the corrosion behavior of AZW800 alloy was investigated. The results showed that the oxide layer could hinder corrosion in the initial immersion period but aggravated corrosion occurred later due to defects of the oxide layer. Additionally, the oxide layer eliminated the micro-galvanic couple on the alloy surface.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Changhong Cai, Marta M. Alves, Renbo Song, Yongjin Wang, Jingyuan Li, M. Fatima Montemor
Summary: An Mg-2Zn-0.6Zr-0.6Nd alloy with excellent mechanical properties for biodegradable cardiovascular stent applications was prepared through indirect extrusion. The corrosion behavior of the alloy in different biomimetic fluids was investigated, showing significant differences in corrosion rate trends and corrosion layer composition.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
V. I. Chukwuike, O. G. Echem, S. Prabhakaran, S. AnandKumar, R. C. Barik
Summary: In addition to providing electrochemical corrosion protection, laser shock peening has been shown to extend the fatigue life and improve mechanical properties of metals. This study investigates the effectiveness of the method under flow conditions and prolonged immersion duration, with results indicating that peened surfaces exhibit higher corrosion resistance in 3.5% NaCl compared to unpeened surfaces.
Article
Materials Science, Multidisciplinary
J. H. Wang, D. G. Li, T. M. Shao
Summary: The NiCr-Cr3C2-CaF2/BaF2 coating, with a NiAl bond coating, was applied to a Ni16Cr13Co4Mo(wt%) alloy using detonation-gun spray. The electrochemical measurements were used to study the hot corrosion behavior. The corrosion products in molten NaCl-KCl were mainly Cr2O3, while in molten NaCl-Na2SO4, a continuous corrosion layer formed by mixed oxides. Al diffusion and oxidation were observed in the bond coating. The presence of liquid phases in the corrosion layer promoted hot corrosion. The hot corrosion mechanisms in the two molten salts were discussed.
Article
Chemistry, Physical
Jianjia Shen, Dong Yang, Linrui Ma, Zesong Gao, Aijun Yan, Qiangqiang Liao
Summary: Two neonicotinoid derivatives, IMT and IMP, have been developed as copper corrosion inhibitors in a NaCl solution, with inhibition efficiencies greater than 97% at 298 K. These compounds can form a protective film on the copper substrate and create a more hydrophobic surface to shield corrosive ions, making them potential alternatives for corrosion inhibitors in harsh industrial seawater systems.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Analytical
Tiancai Cheng, Hualiang Huang, Gangliang Huang
Summary: The galvanic corrosion behavior between ADC12 aluminum alloy and copper in 3.5 wt% NaCl solution was investigated. The results showed that the galvanic effect reduced the formation of pitting on the surface of aluminum alloy, but promoted the formation of pitting on the surface of copper.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Cinthya Dinorah Arrieta-Gonzalez, Francisco Javier Perez-Arizmendi, Milagros Alejandra Dorta-Leon, Jesus Porcayo-Calderon
Summary: The electrochemical behavior of Ni5Al coating deposited by electric arc was evaluated in a saline solution at different temperatures. The variation over time of open circuit potential, linear polarization resistance, and electrochemical impedance spectra of the coating were analyzed. Despite the presence of trapped oxides in the microstructure, the coating showed excellent corrosion resistance and rapidly formed a passive layer to achieve thermodynamic equilibrium with the corrosive medium.
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
Electrochemistry
Simona Varvara, Gianina Damian, Roxana Bostan, Maria Popa
Summary: The inhibitory performance of benzydamine hydrochloride drug, known as Tantum Rosa, on copper corrosion in 3.5 wt.% NaCl solution was investigated in this study. It was found that Tantum Rosa acts as a mixed-type inhibitor, with its protective effectiveness depending on concentration and time. The inhibiting efficiency of Tantum Rosa increases with higher drug concentration and reaches a maximum of 91.5% at 5 mM. The inhibitive effect is attributed to the spontaneous adsorption of Tantum Rosa on the copper surface, following Langmuir adsorption isotherm. However, the stability of the inhibitor film weakens over time, leading to a gradual decay of the inhibition ability of Tantum Rosa.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2022)
Article
Electrochemistry
Arman Zarebidaki, Seyed Haman Hedaiat Mofidi, Farzaneh Iranmanesh Bahri
Summary: This study found that 2-Mercaptobenzothiazole (MBT) can enhance the corrosion resistance of Cu-10Ni alloy at certain concentrations, but deteriorate it at others. The maximum inhibition rate achieved was around 92%.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2022)
Article
Chemistry, Analytical
Odilon Romaric Wamba-Tchio, Martin Pengou, Anne-Lucie Teillout, Cedric Baumier, Israel Martyr Mbomekalle, Pedro De Oliveirac, Charles Peguy Nanseu-Njiki, Emmanuel Ngameni
Summary: The inhibitive activity of a mixture of Ficus pumila Linn. leaves hydroalcoholic extracts (HEFP) and zinc ions against corrosion of XC38 steel in NaCl solution was investigated. It was found that appropriate concentrations of zinc ions and HEFP can significantly increase the inhibitive capacity, and the formation of organometallic complexes between zinc ions and organic compounds of HEFP is the determining step of the synergistic inhibition. Simulation experiments further confirmed the effectiveness of the proposed inhibition mechanism.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Marcel Mandel, Volodymyr Kietov, Robert Hornig, Malte Vollmer, Johanna-Maria Frenck, Christina Wuestefeld, David Rafaja, Thomas Niendorf, Lutz Krueger
Summary: The polarization behavior of Fe-34Mn-17Al-5Ni shape-memory alloy and pure Fe in NaCl-free and NaCl-contaminated Ca(OH)(2,sat) solutions were analyzed. It was found that FeMnAlNi exhibits more severe pitting corrosion sensitivity than Fe in NaCl-contaminated solutions. The pitting behavior is rationalized based on the different semiconducting properties of the passive oxides, analyzed by the Mott-Schottky technique.
Letter
Chemistry, Multidisciplinary
Medhat M. Kamel, Abdel Aziz S. Fouda, Salah M. Rashwan, Osama Abdelkader
Summary: The study confirmed that paprika extract had a good anti-corrosive effect in 1 M HCl pickling media, reducing the dissolution of carbon steel by forming a protective coating. Its adsorption behavior conforms to the Langmuir model, while also impacting both anodic and cathodic reactions of the steel.
GREEN CHEMISTRY LETTERS AND REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Abd El-Aziz S. Fouda, Ameena M. Al-bonayan, Mohamed Eissa, Dalia M. Eid
Summary: In this study, three different types of surfactants were used as corrosion inhibitors for 1037 CS in hydrochloric acid. The results showed that the concentration of surfactants had a significant impact on the protection efficacy and the electrochemical behavior of the CS. Surface morphological investigations and theoretical simulations further confirmed the excellent interaction between the surfactants and the metal surface.
Article
Chemistry, Multidisciplinary
A. S. Fouda, A. M. Wahba, M. Eissa
Summary: This study examined the effects of a newly plant extracted compound on the aluminum surface using various experimental methods. The results showed that the effectiveness of inhibition increased with higher inhibitor concentration and temperature. The study also determined the adsorption characteristics and thermodynamic parameters of the inhibitor. Additionally, the effect of the inhibitor on the aluminum surface morphology was observed using analytical instruments.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2022)
Article
Multidisciplinary Sciences
A. S. Fouda, M. A. Ismail, M. A. Khaled, A. A. El-Hossiany
Summary: The inhibition of copper corrosion by pyrimidinone derivatives (MA-975 and MA-978C) in nitric acid was studied using weight loss, electrochemical impedance spectroscopy, and potentiodynamic polarization measurements. The results showed that the efficiency of inhibition increased with the concentration of inhibitor and temperature. The compounds acted as mixed-type inhibitors, forming a protective thin film on the copper surface and significantly reducing corrosion.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
A. S. Fouda, H. M. Abdel-Wahed, M. F. Atia, A. El-Hossiany
Summary: A novel porphyrin derivative (P1) and its brominated analog (P2) were successfully synthesized and their corrosion inhibition properties on stainless steel 304 (SS304) were studied. The protection efficiency increased with increasing concentration of the compounds and Langmuir's isotherm provided the best fit for describing the adsorption capabilities on SS304 surface.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Hend Asfour, Ghada Y. Elewady, Elsayed G. Zaki, Abd El-Aziz S. Fouda
Summary: A series of novel polymeric ionic liquids (ILs) based on benzimidazolium chloride derivatives were synthesized and their effectiveness as corrosion inhibitors for C-steel in acidic environment was investigated. The results showed that these ILs can effectively suppress corrosion with increasing concentrations. Experimental and theoretical studies revealed the corrosion inhibition mechanism of ILs.
Article
Chemistry, Multidisciplinary
Zaidoun K. K. Kuraimid, Dawood S. S. Abid, Abd El-Aziz S. Fouda
Summary: A quaternary ammonium salt, PMBF, was synthesized and investigated as an inhibitor for C1018 corrosion in 17.5% HCl solution. The chemical structure of PMBF was confirmed using altered techniques. The corrosion protection increased with increasing the dose of PMBF and reached 98.5% at 42.02 x 10(-5) M and 313 K, while it decreased with increasing temperature and reached 97.9% at the same concentration and 343 K. The adsorption of PMBF onto the electrode surface affected both cathodic and anodic processes, acting as a mixed-kind inhibitor.
Article
Chemistry, Multidisciplinary
S. E. H. Etaiw, G. S. Hassan, A. A. El-Hossiany, A. S. Fouda
Summary: In this study, Nano-metal organic frameworks were used as corrosion inhibitors for C-steel in sulfuric acid solutions. The inhibition efficacy of C-steel corrosion increased with the dose of the compounds, reaching 74.4-90% at a dose of 25 x 10(-6) M. The inhibition efficacy decreased with higher temperatures. Activation and adsorption parameters were determined and discussed. Both compounds were physically adsorbed on the surface of C-steel and followed the Langmuir adsorption isotherm model. The compounds functioned as mixed type inhibitors, affecting both metal dissolution and hydrogen evolution reactions. Attenuated Total Reflection Infra-Red (ATR-IR) analysis showed the morphology of the inhibited C-steel surface. The findings of EIS, PDP, and MR were in good agreement.
Article
Chemistry, Multidisciplinary
A. S. Fouda, S. E. H. Etaiw, A. M. Ibrahim, A. A. El-Hossiany
Summary: This study investigated the corrosion performance of stainless steel 304 (SS304) in hydrochloric acid (HCl) solution using novel supramolecular compounds (SCPs) SCP1 and SCP2. Weight loss, polarization measurements, and electrochemical impedance spectroscopy (EIS) tests were conducted. The results showed that the inhibition efficacy of SCPs increased with higher concentrations and decreased with higher temperatures. The SCPs physically adsorbed on SS304 surface and followed Langmuir adsorption isotherm. Quantum chemical calculations and FT-IR/AFM analysis proved the excellent inhibition performance of SCPs. The results from multiple measurements were highly consistent.
Article
Chemistry, Multidisciplinary
Eslam Abdel Haleem, Mohamed E. Eissa, Abd El-Aziz S. Fouda
Summary: This research investigates the inhibitory potential of Terfeziaceae extract as a corrosion inhibitor for copper in corrosive solutions. Various electrochemical techniques and mass reduction experiments were conducted to evaluate its inhibitory effect, and the results showed that the extract exhibited high inhibitory capacity. Surface study techniques such as XPS, SEM, and FTIR confirmed the existence of a protective layer on the copper surface. Furthermore, the extract was found to act as a mixed-type inhibitor.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Abd El-Aziz S. Fouda, Ameena M. Al-Bonayan, Ahmed F. Molouk, M. Eissa
Summary: Aizoon extract is a promising eco-friendly anti-corrosive material for stainless steel 430 in hydrochloric acid solutions. The extract demonstrates excellent inhibition efficiency, adsorption characteristics, and corrosion prevention capability. The experimental data are supported by theoretical evaluations.
Article
Chemistry, Multidisciplinary
Khaled M. Abd El-Khalek, Kamal Shalabi, Mohamed A. Ismail, Abd El-Aziz S. Fouda
Summary: The study showed that two ecofriendly 5-arylidene barbituric acid derivatives have excellent inhibiting effects on the corrosion of carbon steel in 1M HCl, with inhibition efficiency increasing with concentration and temperature. The adsorption of these compounds on the C-steel surface follows the Langmuir adsorption isotherm and is considered spontaneous and chemisorption type. Experimental and theoretical results are in good agreement, confirming the inhibitory properties of these compounds.
Article
Chemistry, Multidisciplinary
Mai A. Khaled, Mohamed A. Ismail, Ahmed. A. El-Hossiany, Abd El-Aziz S. Fouda
Summary: This study investigated the effectiveness of three pyrimidine-bichalcophene derivatives in preventing copper corrosion in 1 M HNO(3) through experimental and computational methods, showing that higher doses and temperatures increased inhibition efficiency. The adsorption of MA-1232 on the copper surface exhibited the best efficiency at a dose of 21 µM at 45 degrees C, with a maximum efficiency of 99.14%. Various thermodynamic parameters were calculated and discussed, while computational chemical approaches aligned with experimental findings.
Article
Chemistry, Multidisciplinary
Abd El-Aziz S. Fouda, Samir A. Abd El-Maksoud, Elsherbiny H. El-Sayed, Hazem A. Elbaz, Ashraf S. Abousalem
Summary: Novel heterocyclic compounds are introduced as effective corrosion inhibitors against carbon steel in 1M hydrochloric acid solution, showing a corrosion efficacy of 81.5-95.2% by forming a stable protective film. The protection mechanism is supported by quantum chemical analyses and simulation modeling techniques.
Article
Chemistry, Multidisciplinary
Abd El-Aziz S. Fouda, Samir A. Abd El-Maksoud, Elsherbiny H. El-Sayed, Hazem A. Elbaz, Ashraf S. Abousalem
Summary: Three newly synthesized hydrazide derivatives showed high inhibition efficiencies on the corrosion of C-steel in 1 M HCl, forming a protective layer on the surface. The adsorption of these compounds followed the Temkin adsorption isotherm and they belonged to mixed-type inhibitors according to polarization curves. Molecular simulation methods further confirmed the inhibitory effect of hydrazide derivatives at the molecular level.
