Article
Materials Science, Multidisciplinary
Asiful H. Seikh, Hossam Halfa, Mahmoud S. Soliman
Summary: Molybdenum is an important alloying element in maraging steels, and increasing its concentration can improve corrosion resistance up to a certain point. However, excessive molybdenum content may reduce the corrosion resistance of the steel.
Article
Materials Science, Multidisciplinary
Hany S. Abdo, Asiful H. Seikh
Summary: The study indicates that 304 austenitic stainless steel is more susceptible to corrosion in the presence of H2S and Cl- type ionic species, while CO2 can help decrease the corrosion rate. Raman spectroscopy analysis reveals that the passive layer formed under different conditions consists of FeCO3, FeS2, Fe2O3, Fe(OH)2, etc. SEM images further verify that elemental S- and Cl- can infiltrate the passive film and cause deterioration.
Article
Crystallography
Hany S. Abdo, Asiful H. Seikh, Ubair Abdus Samad, Ahmed Fouly, Jabair Ali Mohammed
Summary: The study investigated the electrochemical corrosion behavior of laser welded 2205 duplex stainless-steel in artificial seawater with different pH values, showing a direct relationship between solution pH and film resistance, affecting pitting formation. Different bilayer structure composed of metal oxides was observed depending on the acidity or alkalinity level, with increased pitting in lower pH values and improved corrosion resistance in more alkaline solutions.
Article
Materials Science, Multidisciplinary
R. K. Singh Raman, Abhishek Kumar Arya, Kevin Tomy, Faisal A. Dip, Evelyn Lai, Saad Al-Saadi
Summary: Graphene coatings improve the corrosion resistance of nickel and copper. The performance of multilayer graphene coating remains consistent in different corrosive environments. However, the improvement in corrosion resistance is more significant in highly corrosive sulfuric acid environment for bare nickel.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Ines Dhouibi, Fatma Masmoudi, Mohamed Bouaziz, Mohamed Masmoudi
Summary: The research investigates the use of myrtle and rosemary essential oils as novel corrosion inhibitors for copper in salt solution, showing that the oils effectively enhance the corrosion inhibition efficiency, with rosemary performing slightly better than myrtle.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
D. Thirumoolan, K. Anver Basha, S. P. Sakthinathan, T. Siva
Summary: The copolymer of benzoylphenyl methacrylate and methoxyethyl methacrylate was synthesized and its thermal stability and corrosion protection efficiency on mild steel were investigated. The electrochemical results confirmed the good protective effect of the copolymer coating on the metal surface.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Physical
Chun-Huei Tsau, Jo-Yi Chen, Tien-Yu Chien
Summary: CrFeCoNiVx high-entropy alloys were prepared and their microstructures and corrosion properties were studied. The CrFeCoNiV0.5 alloy with a granular structure exhibited better corrosion resistance.
Article
Chemistry, Physical
Yaru Liu, Lu Xing, Qing Zeng, Qinglin Pan, Sheng Li, Jun Liang, Haoru Yang
Summary: This study investigates the impact of quenching conditions on the mechanical properties and corrosion resistance of aluminum alloys, showing that the corrosion sensitivity of the quenching-aged alloy is higher than that of the double-aged alloy, and the corrosion resistance of the quenched alloy decreases before increasing.
Article
Electrochemistry
Longlong Guo, Fei Xiao, Fan Wang, Yutian He, Wenlan Wei, Yong Zhang
Summary: The Inconel 625 overlay on AISI 4130 steel, achieved through pulsed tungsten insert gas welding, demonstrates efficient corrosion protection. The second layer of the overlay shows better stability and superior corrosion resistance compared to others.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Priya Kesari, G. Udayabhanu, Arpita Roy, Sagar Pal
Summary: Green biopolymeric materials and their hybrid nanocomposites were investigated for corrosion prevention of mild steel in 15% HCl. The results showed that the SA-g-PMMA/TiO2 exhibited the highest inhibition efficiency of 97.28%, followed by SA-g-PMMA/Fe3O4 with 96.82% efficiency, while unmodified sodium alginate only showed 84.74% efficiency. The inhibition efficiency decreased with increasing temperature, and the inhibitors followed Langmuir adsorption isotherm. The nanocomposites formed a better protective adsorption layer on the exposed metallic surface compared to sodium alginate alone, as observed from FE-SEM and AFM analysis. The elemental composition of the adsorbed film was determined using XPS technique. Density Functional Theory (DFT) results supported the experimental outcomes.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Electrochemistry
Shih-Chen Shi
Summary: The study shows that HPMCP coatings have durability and corrosion resistance in solutions with different pH values and immersion durations. The coating dissolves in acidic environments, reducing its corrosion resistance; however, with time, the system's corrosion resistance can still be maintained.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Chemistry, Physical
Talal A. Aljohani, Majed O. Alawad, Sally Elkatatny, Abdulrahman I. Alateyah, Meteb T. Bin Rubayan, Mohammed A. Alhajji, Muntathir I. Al Beladi, Fuad Khoshnaw, Waleed H. El-Garaihy
Summary: This study enhanced the corrosion performance of AA2014 aluminum alloy by applying a silica (SiC) coating using the plasma electrolytic oxidation (PEO) process. The microstructure and electrochemical behavior of the coated samples were investigated with different electrical parameters and with or without SiC. The results showed that the SiC-PEO-coated samples exhibited significantly decreased corrosion rate compared to the uncoated alloy.
Article
Materials Science, Multidisciplinary
Dheeraj Jaiswal, Sharvan Kumar, C. K. Behera
Summary: This study evaluated the effect of Cu addition on the corrosion behavior of Sn-9Zn-xCu alloys and found that adding a small amount of copper can improve the corrosion resistance of the alloy.
MATERIALS TODAY COMMUNICATIONS
(2022)
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, 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
Materials Science, Multidisciplinary
Arpita Chatterjee, Soumyadeep Sen, Subhodeep Paul, Pallab Roy, Asiful H. Seikh, Ibrahim A. Alnaser, Kalyan Das, Goutam Sutradhar, Manojit Ghosh
Summary: The wear debris from conventional brake pads is a growing source of environmental contamination that often leads to life-threatening diseases for human beings. Metal matrix composites have served as an optimal solution with minimal environmental pollution and appreciable physical properties. The present study focuses on the fabrication and characterization of SiC-reinforced LM6 alloy as a potential brake pad material, and the results show that the fabricated metal matrix composite (MMC) is a reliable alternative.
Article
Crystallography
Ubair Abdus Samad, Mohammad Asif Alam, Asiful H. Seikh, Jabair A. Mohammed, Saeed M. Al-Zahrani, El-Sayed M. Sherif
Summary: This research builds upon our previous work, which investigated changes in the properties of epoxy coatings using different ratios of two types of hardener. The best stoichiometric ratio was employed in this study to modify the coatings further by incorporating 1, 2, and 3 wt.% micro aluminium (Al) pigments for carbon steel panels. The coated panels were characterized after 7 days of curing using X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, pendulum hardness, scratch test, and nano-indentation. Electrochemical tests were conducted in a 3.5% sodium chloride (NaCl) solution for different exposure periods. The presence of 1% Al was found to provide the highest corrosion resistance after exposure, and longer immersion periods (14, 21, and 30 days) improved corrosion resistance and reduced coating degradation.
Article
Optics
Uday Kumar, Somnath Chattopadhyaya, Alok Kumar Das, A. H. Seikh, Shubham Sharma, Shashi Prakash Dwivedi, Kaori Nagai, Abhinav Kumar, Ashish Agrawal, Sunpreet Singh
Summary: This study aims to investigate the influence of pulsation on the microstructure and mechanical properties by using a pulsed Nd-YAG low-power laser setup to butt weld thin sheets of Ti-6Al-4V alloy. Annealing at different temperatures was also performed to compare the results of pulsation and heat treatment. The results suggest that the annealing temperature affects the transformation of the structure, the grain size, and the volume fraction of the equiaxed structure.
Article
Multidisciplinary Sciences
Pushpak Banerjee, Avinava Roy, Soumyadeep Sen, Arkajit Ghosh, Gourab Saha, Asiful H. Seikh, Ibrahim A. Alnaser, Manojit Ghosh
Summary: The research aimed to accurately determine the relationship between the endurance of thermal barrier coatings (TBCs) and tribological investigations. Various methods were utilized to estimate the maximum durability of TBCs and found the optimized Yttrium doping concentration to be 3.5 wt %. The results were reliable and accurate, suggesting future research directions.
Article
Chemistry, Physical
Badr M. Thamer, Faiz A. Al-aizari, Hany S. Abdo
Summary: In this study, nitrogen-rich conjugated polymer PDAN was successfully synthesized and incorporated into PAN NFs to form PDAN/PAN NFs composite. The incorporation of PDAN significantly increased the adsorption capacity of the composite for AB10B dye. The designed PDAN/PAN NFs composite showed efficient and selective adsorption of organic dyes.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Badr M. Thamer, Meera Moydeen Abdul Hameed, Hany S. Abdo, Mohamed H. El-Newehy
Summary: A highly efficient and non-precious electrocatalyst was developed using a facile and in situ two-step method. The electrocatalyst utilized nickel-copper alloy nanoparticles supported on porous carbon nanosheets. The electrocatalyst exhibited a favorable electrochemically active surface area and superior electrocatalytic performance for methanol oxidation, serving as an alternative to noble metal-based catalysts.
Article
Multidisciplinary Sciences
Abdullah A. A. Alghannam, Mahmoud S. S. Soliman, Asiful H. H. Seikh, Ibrahim A. A. Alnaser, Ahmed Fouly, Jabair A. A. Mohammed, Sameh A. A. Ragab, Hany S. S. Abdo
Summary: Casting of aluminum with different concentrations of Mg, Mn alloying elements, similar to AA5083, along with 0.1%, 0.2%, and 0.3% Ti, was carried out using a graphite crucible. The resulting as-cast microstructure was modified by hot rolling into thin sheets, which were then subjected to mechanical and metallurgical characterization through various testing methods. The results showed that increasing Ti content led to grain refinement, increased formation of Al3Ti, and improved mechanical properties. However, corrosion resistance was reduced due to the grain refinement phenomena.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Multidisciplinary
Mohamed S. Abdo, Ashraf Maher, Ahmed Fouly, Saud M. Almotairy, Muhammad A. Shar, Hany S. Abdo
Summary: This study investigates the performance of different shapes of antennas in microwave ablation (MWA) for the treatment of hepatocellular carcinoma (HC). A numerical model was established to examine specific absorption rate (SAR), temperature distribution, and coefficient of reflection. The findings of the study can aid in determining the optimal parameters for the highest effectiveness of MWA in the treatment of early-stage HC with minimal invasiveness and collateral harm.
Article
Engineering, Chemical
Asiful H. Seikh, Hamad F. Alharbi, Ibrahim A. Alnaser, Mohammad R. Karim, Jabair A. Mohammed, Muhammad Omer Aijaz, Ahmed Hassan, Hany S. Abdo
Summary: In this study, rice straw and cow dung were subjected to hydrothermal processing to recover bio-oil and biochar. The optimal conditions resulted in high yields of bio-oil and biochar, with the biochar showing promising results in wastewater treatment for colorant removal.
Article
Engineering, Biomedical
Mohamed Taha, Ahmed Fouly, Hany S. S. Abdo, Ibrahim A. A. Alnaser, Ragab Abouzeid, Ahmed Nabhan
Summary: The efficient utilization of rice waste has the potential to contribute to environmental sustainability and the development of novel materials for biomedical applications. Incorporating rice-straw-derived nanofibers as reinforcement into high-density polyethylene improves the hydrophilicity, strength, hardness, and wear resistance of the bio-composites.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Ibrahim A. Alnaser, Ahmed Fouly, Muhammad Omer Aijaz, Jabair A. Mohammed, Mahmoud B. Elsheniti, Sameh A. Ragab, Hany S. Abdo
Summary: This research focuses on the tribomechanical investigations of using a low loading fraction of Al2O3 and SiC as reinforcement for LDPE matrix. The mechanical and tribological properties of the resulting nanocomposites were evaluated, showing positive contributions from the low fraction hybrid ceramic nanoparticles.
Article
Polymer Science
Thamer Albahkali, Ahmed Fouly, Ibrahim A. Alnaser, Mahmoud B. Elsheniti, Ahmed Rezk, Hany S. Abdo
Summary: The aim of this study is to evaluate the impact of hybrid reinforcement using Al2O3 nanoparticles and graphite on the mechanical and tribological properties of epoxy nanocomposites. The results showed that the addition of hybrid additives significantly improved the elasticity, strength, toughness, ductility, and hardness of the material, while reducing the coefficient of friction and wear.