Article
Biochemistry & Molecular Biology
A. Muthuchamy, Muthe Srikanth, Dinesh K. Agrawal, A. Raja Annamalai
Summary: The research examined the effect of heating mode on sintered aluminum alloys, finding that microwave sintered samples exhibit finer microstructure and better mechanical properties and corrosion resistance compared to conventionally sintered ones.
Article
Materials Science, Multidisciplinary
Lipeng Gao, Guirong Li, Hongming Wang, Yuwei Yan
Summary: In this study, FeCoNi1.5CrCu/Al composites with excellent mechanical properties were successfully prepared using microwave sintering technology. It was found that the material maintained a fine and uniform microstructure during microwave heating. The mechanism of interface formation revealed the presence of an atomic diffusion layer with a BCC solid solution structure between the high entropy alloy particles and the matrix, which significantly enhanced the interfacial bonding performance.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Tian-Shu Liu, Feng Qiu, Hong-Yu Yang, Chao-Lin Tan, Bai-Xin Dong, Jian-Feng Xie, Shi-Li Shu, Qi-Chuan Jiang, Lai-Chang Zhang
Summary: This study successfully addressed the challenge of controlling microstructure evolutions after casting, sheet forming, and welding by introducing trace TiC-TiB2 nanoparticles. The nanoparticles refined the solidified microstructures, promoted recrystallization, and suppressed coarsening in fusion and heat-affected zones.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Polymer Science
Jin Seob Kim, Kwan Han Yoon, Young Sil Lee, Jong Hun Han
Summary: The thermal conductivities of epoxy composites with Al-exfoliated graphite nanoplatelets increased with filler content, with partially inserted composites showing the highest thermal conductivity. Fully inserted composites had the highest tensile and flexural moduli, but all composites exhibited lower tensile and flexural strengths with increased filler content due to weaker interfaces between the epoxy matrix and filler.
MACROMOLECULAR RESEARCH
(2021)
Article
Materials Science, Ceramics
Xiao-Tong Jia, Zhao-Hui Zhang, Tian-Hao Xu, Luo-Jin Liu, Yuan-Hao Sun, Xian-Yu Li, Qiang Wang, Zhao-Hu Jia, Yang-Yu He, Xing-Wang Cheng
Summary: Aluminum oxynitride ceramics doped with different sintering aids were synthesized, and their microstructures, mechanical, and optical properties were investigated. The results showed that the optimal amount of sintering aids was 0.06 wt% La2O3 + 0.16 wt% Y2O3 + 0.30 wt% MgO. The addition of La3+ and Mg2+ decreased grain boundary migration, promoted pore elimination, and inhibited grain growth. The addition of Y3+ facilitated liquid-phase sintering. Furthermore, the addition of Mg2+ effectively promoted twin formation, hindering crack propagation and dislocation motion. The doped AlON ceramic exhibited excellent mechanical and optical properties.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Polymer Science
Jin Seob Kim, Young Sil Lee, Kwan Han Yoon, Jong Hun Han
Summary: Partially inserted PC/Al-xGnP composite has higher thermal conductivity compared to fully inserted composite, while fully inserted composite exhibits superior mechanical properties.
Article
Chemistry, Physical
Shiyu Hou, Shuaijie He, Tianle Zhu, Jihui Li, Liqiang Ma, Hongda Du, Wanci Shen, Feiyu Kang, Zheng-Hong Huang
Summary: The traditional method of exfoliated graphite production faces challenges in energy conservation and pollution abatement. A new preparation method under room temperature conditions has been developed to acquire high-performance exfoliated graphite with significant potential for industrial applications.
JOURNAL OF MATERIOMICS
(2021)
Article
Chemistry, Physical
Jiang Wu, Xuguang An, Jing Zhang, Shaofeng Lei, Yi Guo, Xiwei Xu, Weitang Yao, Qingyuan Wang, Qingquan Kong
Summary: Ti-24Nb-4Zr-3Mn alloys were prepared using mechanical alloying and spark plasma sintering. The study found that increasing the milling time reduces the particle size of the alloy powder, but increases the oxygen content. Among all the investigated alloys, Ti-24Nb-4Zr-3Mn alloy prepared by 20-hour milling showed excellent comprehensive mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Benjamin Guennec, David Tingaud, Remy Pires-Brazuna, Loic Perriere, Noriyo Horikawa, Guy Dirras
Summary: In order to improve the cold-work capacity of tungsten alloys, pure tungsten powder was doped with 1 wt% nickel and consolidated by spark plasma sintering at different temperatures. The addition of nickel removes oxygen from tungsten grain boundaries. The mechanical properties of the obtained materials were significantly improved, mainly due to the elimination of oxygen at the grain boundaries and deformation accommodation by the nickel-rich phase.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Aicha S. Lemine, Osama Fayyaz, Moinuddin Yusuf, R. A. Shakoor, Zubair Ahmad, Jolly Bhadra, Noora J. Al-Thani
Summary: This study focuses on enhancing the mechanical properties of aluminum by adding ceramic particles and synthesizing Al-NbC-B4C hybrid composites. The composites showed improved hardness, strength, and resistance to localized plastic deformations. The results demonstrated the effectiveness of the reinforcement strategy in enhancing the mechanical properties of aluminum.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
P. Sankanit, V. Uthaisangsuk, P. Pandee
Summary: In this study, hypoeutectic Al-Ni alloys with different nickel contents were investigated through macrostructure and microstructure analyses, hardness measurements, and tensile tests. The volume fraction of eutectic was found to play an important role in the mechanical properties of the alloy, with increasing eutectic phases leading to higher hardness, yield strength, and ultimate tensile strength. The calculated stress-strain responses of the alloys were well verified with the experimental tensile curves, and a micromechanics model was developed to describe local stress and strain evolutions in the microstructure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
K. Sarath Chandra, Debasish Sarkar
Summary: The structural properties of Al2O3-MgO-C refractories were significantly improved by adding YAG nanoparticle hybridized expandable graphite (EG), resulting in a well-sintered framework of EG embedded polyhedral YAG grains throughout the matrix microstructure. This led to enhancements in strength, toughness, and Weibull modulus compared to conventional graphite compositions, with proposed mechanisms for microstructure evaluation and toughening in these refractory composites.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Ruipeng Mao, Daoping Xiang
Summary: This study combined low-temperature sintering and flake powder metallurgy to fabricate tungsten heavy alloys with excellent mechanical properties and high relative density. The alloy sintered at 1200 degrees C showed the optimal properties in terms of bending strength, hardness, relative density, and average tungsten grain size.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Li -Fu Yi, Kenta Noguchi, Lei Liu, Akira Otsu, Tetsuhiko Onda, Zhong-Chun Chen
Summary: Al/graphite composites were prepared using SPS and HE methods, and their microstructure, thermal conductivity, and coefficient of thermal expansion were investigated. The results showed that graphite underwent deformation, exfoliation, and breakage during the HE process, with a higher degree of exfoliation observed in the rotation HE samples. Graphite deformation and strong interfacial bonding between graphite and Al matrix led to reduced heat transfer and lower coefficient of thermal expansion in Al/graphite composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Construction & Building Technology
Mahmoud Ziada, Savas Erdem
Summary: This study investigates the effect of TiO2 and Al2O3 nano-particles in different proportions on the mechanical, microstructural, and high-temperature resistance of engineered cementitious composites (ECC). Flexural strength, compressive strength, and ultrasonic pulse velocity experiments were conducted on the ECC composites containing varying ratios of TiO2 and Al2O3 nanoparticles. The concentration of TiO2 and Al2O3 nano-particles was found to have a significant impact on the compressive strength of the composites, and the addition of 1% TiO2 and 1.5% Al2O3 nanoparticles led to the greatest increases in strength. Additionally, the compressive strength of the nano-doped ECC samples showed significant improvement at high temperatures.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Chemistry, Physical
O. Dagdag, Avni Berisha, Valbone Mehmeti, Rajesh Haldhar, Elyor Berdimurodov, O. Hamed, S. Jodeh, Hassane Lgaz, El-Sayed M. Sherif, Eno E. Ebenso
Summary: In this study, an epoxy coating was used as an anti-corrosive material for aluminum alloys. The corrosion behavior of the aluminum alloys samples was tested and theoretically studied. The results showed a decrease in impedance over time, indicating electrolyte penetration into the coating and a reduction in film properties. Theoretical calculations supported the experimental results.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Multidisciplinary
Alvina Rasool, Saba Zahid, Muhammad Ans, Javed Iqbal, Muhammad Adnan, El-Sayed M. Sherif, M. S. Al-Buriahi
Summary: By substituting the terminal groups of reference B4N2-(F)Mes with thiophene, a new stream of donor-pi-acceptor arylborane-arylamine type donor contributors (BN1-BN5) has been developed. Computational characterization and cross-check with reference (BNR) showed that the newly planned molecules, especially BN4 and BN1, exhibit promising optoelectronic properties. The approach of thiophene bridged end-capped acceptor alteration has shown potential in providing materials for organic solar cells.
Article
Materials Science, Multidisciplinary
A. Degnah, H. F. Alnaser, El-Sayed M. Sherif, I. Alhoweml, K. Kondoh, A. Alhazaa
Summary: This study investigated the possibility of improving the properties of titanium alloy by replacing its toxic element. The Ti-2Zr-1.5N-0.04H-XFe system was suggested and two alloys were synthesized and investigated. The addition of iron improved sintering and corrosion resistance.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Endocrinology & Metabolism
Eman M. Sherif, Randa M. Matter, Nouran Yousef Salah, Nour Eldin H. Abozeid, Heba M. Atif, Nermien M. Tantawy
Summary: This study explores the early changes in optical coherence tomography angiography (OCTA) among children and adolescents with type 1 diabetes (T1DM), and establishes their correlation with diabetes-duration, glycaemic control, and fibroblast growth factor-21 (FGF21). The findings suggest that OCTA changes can be detected in the early stages of T1DM development.
DIABETES-METABOLISM RESEARCH AND REVIEWS
(2023)
Article
Green & Sustainable Science & Technology
Ghada A. Alshammri, Naglaa Fathy, Shereen Mohammed Al-Shomar, Alhulw H. Alshammari, El-Sayed M. Sherif, Mohamed Ramadan
Summary: The application of a higher corrosion resistance coating with nano additions effectively reduces or prevents corrosion. In this study, a novel method for modifying carbon steel surfaces with a Sn-4% Zn alloy/nanoparticle composite (NiO+ Al2O3) coating was successfully developed to achieve high corrosion resistance. Regular coating and interface structures were achieved by incorporating individual Al2O3 and both NiO and Al2O3 nanoparticles in the Sn-Zn coating. The presence of Al2O3, NiO, and Al2O3/NiO nanoparticles remarkably improved the corrosion resistance, with the Al2O3/NiO combination showing the highest improvement.
Article
Chemistry, Physical
Hany R. Ammar, Elsayed M. Sherif, Subbarayan Sivasankaran, Fahad A. Almufadi, Abdel-baset H. Mekky
Summary: Corrosion-resistant AA5083-BN/WC composites were developed by controlling the reinforcement content in the matrix. The addition of 6% WC improved the corrosion resistance, and the addition of 12% WC further enhanced it. Adding 6% BN increased the corrosion resistance of AA5083, while 12% BN achieved the highest resistance. These results were confirmed by different electrochemical techniques. The presence of WC and BN protected the composites against corrosion and reduced pitting corrosion.
Article
Chemistry, Physical
S. Sivasankaran, Hany R. Ammar, El-Sayed M. Sherif, Abdulaziz S. Alaboodi, Abdel-baset H. Mekky
Summary: This study investigates the influence of Al2O3 on the microstructure, phase changes, and mechanical and wear performances of CrFeCuMnNi high-entropy alloy matrix composites (HEMCs). The synthesized HEMCs consisted of both FCC and BCC phases, with the FCC phase being the major stable phase. The addition of Al2O3 particles led to a decrease in grain size of the matrix, resulting in improved mechanical and wear performances. The incorporation of Al2O3 particles effectively dispersed and refined the structure, leading to increased compressive strength and improved wear resistance.
Article
Chemistry, Physical
Hany R. Ammar, Subbarayan Sivasankaran, El-Sayed M. Sherif, Fahad A. Almufadi, Abdel-baset H. Mekky
Summary: AA5083-WC composites were developed by ball milling and hot consolidation. The composites exhibited a homogeneous dispersion of WC particulates in the AA5083 matrix without any interactions at the matrix/reinforcement interface. The incorporation of WC particulates significantly improved the compressive stress-strain behaviour and enhanced the resistance to wear and friction. The AA5083-12%WC (AW-12) composite displayed the maximum strength and the highest resistance to wear and friction, making it a promising candidate for tribological applications.
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
Crystallography
Subbarayan Sivasankaran, El-Sayed M. Sherif, Hany R. R. Ammar, Abdulaziz S. S. Alaboodi, Abdel-baset H. Mekky
Summary: This study investigates the influence of 3 vol.% Al2O3, 3 vol.% TiO2, and 3 vol.% Y2O3 on the microstructural changes and corrosion resistance of the CrFeCuMnNi high-entropy alloy. The developed oxide-dispersed high-entropy composites (ODS-HECs) exhibited a stable FCC phase, a small amount of ordered BCC-B2 structure, Fe2O3, and corresponding dispersed oxide phases. The corrosion rate decreased with the incorporation of oxide particles, and the CrFeCuMnNi-3 vol.% TiO2 ODS-HECs showed the highest corrosion resistance.
Article
Thermodynamics
Moh Yaseen, Sawan Kumar Rawat, Umair Khan, Anup Singh Negi, Manoj Kumar, El-Sayed M. Sherif, Ahmed M. Hassan, Ioan Pop
Summary: This study discusses the impact of buoyancy force and Hall effects on the time dependent stagnation point flow of Ag-TiO2/water hybrid nanofluid flow over a rotating disk. The governing equations are transformed into ordinary differential equations using similarity transformations and numerically solved using MATLAB. The results are validated and the influence of relevant parameters on the properties of flow and heat transmission rate is analyzed graphically. The outcomes of this study have practical importance in various fields utilizing rotating disk systems.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Chemistry, Physical
El-Sayed M. Sherif, Yassir A. Bahri, Hamad F. Alharbi, Muhammad Farzik Ijaz
Summary: The effect of Sn concentration on the corrosion of three Ti-based alloys (Ti-Zr-Ta-4Sn, Ti-Zr-Ta-6Sn, and Ti-Zr-Ta-8Sn) was investigated using electrochemical measurements and surface analyses. It was found that the alloys showed improved corrosion resistance with increasing Sn content, as indicated by the passivation of the alloy surface and the reduction in corrosion. The addition of Sn significantly improved the alloys' polarization resistances and reduced both uniform and pitting corrosion.
Article
Environmental Sciences
K. Vinutha, M. Sunitha, J. K. Madhukesh, Umair Khan, Aurang Zaib, El-Sayed M. Sherif, Ahmed M. Hassan, Ioan Pop
Summary: Studying waste discharge concentration in convergent/divergent channels is crucial for environmental applications. It helps determine the efficacy of treatment techniques and regulatory controls in lowering pollutant levels. This study focuses on the flow and heat transmission characteristics in ternary-based nanofluid systems with divergent and convergent channels. The results show that improving pollutant source variation can enhance concentration in divergent channels while reducing it in convergent channels. Adding nanoparticles increases surface drag force and improves heat management and circulation in nanofluid systems.
Article
Environmental Sciences
Javali Kotresh Madhukesh, Vinutha Kalleshachar, Chandan Kumar, Umair Khan, Kallur Venkat Nagaraja, Ioannis E. Sarris, El-Sayed M. Sherif, Ahmed M. Hassan, Jasgurpreet Singh Chohan
Summary: Wastewater discharge is crucial in environmental management and industries to conserve water resources and adhere to environmental standards. This study analyzes the impact of pollutant discharge concentration using non-Newtonian nanoliquids over a permeable surface with thermal radiation. Two types of nanoliquids, second-grade and Walter's liquid B, are considered. The governing equations are obtained using boundary layer techniques and reduced to ordinary differential equations using similarity variables. The solutions are obtained using numerical techniques and the effects of dimensionless constraints are illustrated graphically. A comparative analysis between the two nanoliquids is presented, showing that velocity profiles decrease with the porous factor and thermal and concentration profiles are affected by radiation and pollutant source variation. The study also analyzes important engineering factors. The findings will aid in decision-making and planning to reduce pollution and protect the environment.
Article
Engineering, Multidisciplinary
Umair Khan, Aurang Zaib, Anuar Ishak, Iskandar Waini, El-Sayed M. Sherif, Dumitru Baleanu
Summary: Solar energy is an important sustainable energy source that is easily accessible and abundant. Using nanofluid can enhance the efficiency of solar collectors and delay boundary layer separation. The volume fraction of nanoparticles has a significant impact on the performance of solar collectors.
CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES
(2023)
