Article
Chemistry, Applied
Aurelien Hermann, Sylvain Giljean, Marie-Jose Pac, Cyril Marsiquet, Manon Beaufils-Marquet, Dominique Burr, Veronic Landry
Summary: In the wood furniture and flooring industry, the protective and aesthetic properties of the final product often rely on the coatings applied to the wood surface. UV-cured coatings are preferred for flat surfaces due to their advantages of fast curing times, low VOC emissions, low energy consumption, and high crosslinking densities. Understanding the behavior of protective coatings under wear and deterioration is crucial for enhancing the durability of interior wood products and improving overall product perception.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Engineering, Mechanical
C. Penfornis, A. Jourani, P. -E. Mazeran
Summary: The study investigates the influence of martensite volume fraction, load and attack angle on the hardness, friction and wear of ferrite and martensite phases in a dual-phase microstructure. Friction coefficient increases with attack angle, with ferrite always having a higher coefficient than martensite. Higher martensite volume fraction leads to increased friction coefficient and decreased wear resistance. Increasing attack angle shifts wear mechanism from ploughing to cutting for martensite, with experimental results correlating to the Equal Pressure model by Axe 'n & al.
Retraction
Engineering, Multidisciplinary
Shadi Riahi, Ali Nazari
Summary: The article has been retracted due to significant overlap with several other articles, including those being considered for review at the same time, as well as evidence of peer review manipulation.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Article
Materials Science, Paper & Wood
Yulong Li, Zhi Xiong, Mingxing Zhang, Yulong He, Yan Yang, Youwei Liao, Jiangtao Hu, Minglei Wang, Guozhong Wu
Summary: In this study, a practical strategy was developed to create an anti-abrasion and durable superhydrophobic wood surface with UV resistance using a sol-gel method and EB curing technology. The resulting wood displayed excellent water repellency and resistance to harsh external environments, showcasing its potential applications in furniture and architecture.
Article
Materials Science, Multidisciplinary
Corentin Penfornis, Abdeljalil Jourani, Pierre-Emmanuel Mazeran
Summary: The tribological behavior of dual-phase steels and the contribution of varying properties of the phase at the microscopic scale were investigated in this study. Dual-phase microstructures with different grain sizes and martensite volume fractions were created, and their friction and wear behavior was characterized. The results showed that the friction coefficient and wear resistance of martensite were proportional to its carbon content, regardless of grain size. The tribological behavior of the microstructure was influenced by the grain size of ferrite, with a Hall-Petch relationship observed for the friction and wear resistance. Additionally, the wear resistance exhibited a transition from Equal Wear mode to Equal Pressure mode as the ratio of contact size to ferrite grain size increased.
Article
Engineering, Mechanical
M. Varga, A. M. Ventura Cervellon, S. Leroch, S. J. Eder, H. Rojacz, M. Rodriguez Ripoll
Summary: The understanding and experimentation of abrasive wear mechanisms at high speeds is still lacking in literature, mainly due to a lack of well-instrumented test rigs for fundamental abrasive wear events. Standard scratch tests operate at low speeds, while high-speed applications often suffer from abrasive wear. Numerical approaches, especially particle-based methods, can simulate fast deformation processes, but require precise material parameters. This study parametrized the Johnson-Cook material model using high-speed compression tests of pure aluminum and used a pendulum scratch test rig to simulate scratch tests at 6.8 m/s. The experiment and simulation showed comparable results for the aluminum, with reduced strain hardening at high speeds.
Article
Materials Science, Multidisciplinary
Wenqing Liang, Wenfei Zhang, Xuesong Xu, Shaofeng Zhang, Xin Yao, Jingsong Chen
Summary: In this study, a versatile method based on upconversion nanoparticles assisted photocuring is developed to overcome the limited curing depth of conventional dental restoration systems. By using a pulse modulated 980 nm laser, the hardness and curing temperature of dental resin are significantly improved compared to blue light emitting diodes (LEDs) and continuous 980 nm laser. The results also demonstrate the potential of this upconversion curing method in broadening the application range of dental restorations.
Article
Materials Science, Multidisciplinary
Jiangting Wang, Guillaume Bruel, Zhiyang Wang, Elliot Paul Gilbert, Pavel Cizek, Santiago Corujeira-Gallo, Daniel Fabijanic, Matthew Barnett
Summary: Adding 2 wt% vanadium to Hadfield steel and subjecting it to short-time aging at 1173K (900 degrees C) generates a dispersion of nanoscale precipitates, resulting in a significant increase in hardness.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Ke-Chao Zhou, Hai-Long Pei, Jin-Kun Xiao, Lei Zhang
Summary: The friction behavior and wear properties of WC particle-reinforced copper matrix composites were investigated by micro-scratch tests. The results show that the addition of WC particles significantly improves the hardness and scratch resistance of the composites. As the normal load increases, the penetrate depth and residual depth of the composites increase linearly, and the friction coefficient also increases. The effective material removal mechanism changes from micro-plowing to micro-cutting.
Article
Polymer Science
Natalia Gutierrez Perez-de-Eulate, Patricia Ares Elejoste, Garazi Goenaga, Maitane Urrutxua, Francisco Javier Vallejo, Jesus Ballestero, Alexandra Allue, Jose Luis Gomez-Alonso
Summary: Fiber-reinforced polymer composites have advantages such as lightweight, high strength, stiffness, corrosion resistance, and reduced maintenance compared to metallic components. However, fire resistance is a key factor in certain applications. To address this, a UV-curable resin composed of acrylic monomers and flame-retardant fillers was used to manufacture flame-retarded UV-curable composites.
Article
Chemistry, Multidisciplinary
Adrian Esteban-Arranz, Ana Raquel de la Osa, Wendy Eunice Garcia-Lorefice, Javier Sacristan, Luz Sanchez-Silva
Summary: This study optimized the performance of cement-based epoxy resin coatings in aggressive environments by functionalizing with different nanoparticles. The nanomodified coatings with activated carbon and silica showed the best adherence and abrasion resistance properties.
Article
Engineering, Environmental
Rui Zhang, Jiaye Li, Stephen Jerrams, Shui Hu, Li Liu, Shipeng Wen, Liqun Zhang
Summary: In this study, modified graphene oxide and silica were used to construct composite particles with bridged structures, which were then mixed with styrene butadiene rubber to improve the mechanical and abrasion resistance properties of the composite material.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Zaheer Ul Haq, Muhammad Zia-ul-Haq, Yang Jiang, Jinyuan Wang, Yong Zhang
Summary: In this study, the effects of molybdenum disulfide (MoS2) and Al2O3-coated MoS2 on the properties of natural rubber (NR)/carbon black composites were investigated. The results showed that Al2O3-coated MoS2 greatly improved the dispersion of carbon black in NR composites. MoS2 filler and carbon black exhibited a synergistic effect in improving the mechanical properties of NR composites. Additionally, increasing the content of MoS2 and Al2O3-coated MoS2 enhanced the thermal conductivity and stability of the composites. Moreover, the inclusion of a small amount of Al2O3-coated MoS2 significantly improved the abrasion resistance, wet grip, and reduced rolling resistance of the composites, showing its potential application in green tires.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Ceramics
Chunyang Ma, Hongxin He, Fafeng Xia, Zhongmin Xiao, Yan Liu
Summary: Magnetic-field-assisted electrodeposition was used to deposit Ni-SiC composites on Q235 steel substrates, resulting in improved surface and structure performances. The composites exhibited superior properties in terms of surface morphology, roughness, micro-structure, abrasion resistance, and corrosion resistance.
CERAMICS INTERNATIONAL
(2023)
Article
Construction & Building Technology
Li Li, Tianlai Yu
Summary: Polyurethane concrete has good flexible and bonding performance, making it suitable for pavement and bridge decks in cold regions. However, its quick curing time poses challenges for transportation and construction. This study proposes adding retarders to adjust the curing process of polyurethane concrete and investigates its performance through various tests. The results show that the addition of retarders significantly reduces shrinkage strain and does not affect the frost resistance, abrasion resistance, fatigue resistance, and UV aging resistance of the concrete. Therefore, this new type of polyurethane concrete holds potential for use in pavement and bridge decks.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
A. Khallouqi, A. Halimi, O. El Rhazouani
Summary: A pediatric head phantom made of epoxy resin was used to evaluate radiation exposure in CT scans. The phantom demonstrated dosimetric properties comparable to commercially available phantoms, making it a practical and economical option for assessing radiation dose in children.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
M. Y. Shoeib, Doaa A. Ahmed, A. F. Abd-Elraheem
Summary: The research aims to measure and analyze the levels of radon concentration, radium concentration, and radon exhalation rates in geopolymer cement mixes, and assess their impact on indoor air quality. Results indicate that geopolymer cement materials are safe for use in construction, except for specific mixes.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
M. J. Leotlela
Summary: This article presents the results of radiochemical events/processes that occur when water is exposed to ionising radiation of charged particles (beta and alpha-particles). The idea of cogeneration becomes even more lucrative if we consider that hydrogen energy generation is clean (also known as green energy) because of its insignificant contribution to environmental pollution. These results supplement the fluctuation in effective dose theory/hypothesis of a previous study on time-dependent variations in the radiological health impact of an interim SNFS facility presented in 2021 (Leotlela, 2021).
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Vyacheslav Ivanovich Pavlenko, Roman Vladimirovich Sidelnikov, Vitaly Valerievich Kashibadze, Mikhail Igorevich Dobynde, Dmitry Alexandrovich Kartashov, Vyacheslav Alexandrovich Shurshakov
Summary: This work explores the possibility of using a polymer composite to protect against neutron radiation in space conditions. The study shows that the proposed polymer composite has high structural properties necessary for use in space. Monte Carlo simulation is used to evaluate the neutron radiation passage through the material. The results demonstrate that the protective layer made of the polymer composite is thinner and more suitable for spacecraft, which is crucial due to limited space on board.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Islam G. Alhindawy, M. I. Sayyed, Dalal Abdullah Aloraini, Aljawhara H. Almuqrin, Mohammad S. Alomar, Gaber A. Elawadi, K. A. Mahmoud
Summary: This study investigated the effects of Neodymium (III) nitrate hexahydrate and lanthanum nitrate hexahydrate on the structural and radiation shielding properties of zircon mineral, and a new La/Nb-doped ZrO2 nanocomposite was fabricated. Experimental techniques such as energy-dispersive X-ray, scanning electron microscope, transmission electron microscopy, and X-ray diffraction pattern were used to analyze the structure and composition of the fabricated nanocomposites. Monte Carlo simulation was employed to evaluate the gamma-ray shielding properties. The results showed that the fabricated composites had good shielding characteristics, with a shielding capacity of 30-50% compared to pure lead in the intermediate energy range of 0.244-2.506 MeV.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Hassan Salah, Mohammed Alkhorayef, Layal Jambi, Mohammed Almuwanis, Abdelmoneim Sulieman
Summary: Cardiovascular nuclear medicine imaging examinations expose patients to high doses of ionizing radiation. This study assessed the radiation doses and public exposure in cardiac rest and stress SPECT scans. The effective dose from cardiac stress was higher than previous studies, which may be influenced by clinical indication imaging protocols and radiation safety measures.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Leandro Barbosa da Silveira Gatto, Delson Braz, Leonardo Pacifico, Paulo Travassos, Luis Alexandre Goncalves Magalhaes
Summary: This study evaluated the mean glandular dose (MGD) in mammography using a computed radiography (CR) system with a solid-state detector. Irradiations and simulations were conducted to determine the MGD and spectra for the same conditions. The results showed that the glandular dose was below the acceptable levels and the spectra were mostly in accordance with the literature.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Mawya Khafaji, Rashid Barnawi, Salma Amoudi, Hassan Gabbani, Rayan Alhazmi, Rayan Ahyad, Khalid Alsafi, Khuld Saeedi, Hassan Salah, Nissren Tamam, David Bradley, Sarah Albahiti, Abdelmoneim Sulieman
Summary: This study aimed to calculate typical values for common pediatric studies at King Abdulaziz University Hospital and compare them with other studies. The results showed that radiation dose levels in pediatric CT examinations were generally lower compared to other studies.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Faisal Almisned, Iskender Akkurt, Nurdan Karpuz
Summary: In this study, cross sections of medical radioisotopes were calculated using level density models. The results were compared with experimental data and it was found that the GSM level density models generally yielded consistent conclusions.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Shokufeh Saeid, Neda Mollakhalili-meybodi, Fateme Akrami Mohajeri, Farzan Madadizadeh, Elham Khalili Sadrabad
Summary: This study found that gamma irradiation significantly reduces the saponin and phytic acid content of quinoa. At a dose of 2.5 kGy, it can effectively reduce saponin and phytic acid without significantly damaging the antioxidant compounds.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Maria Demeter, Ion Calina, Anca Scarisoreanu, Valentina Mitran, Marcela Popa, Anisoara Cimpean, Mariana Carmen Chifiriuc, Marin Micutz, Elena Matei, Bogdana Mitu
Summary: Novel biocompatible composite hydrogels with good elastic and antimicrobial properties were synthesized by e-beam cross-linking using chitosan, water-soluble polymers, and silver nanoparticles (AgNP). The composite hydrogels showed high stability, absorption capability specific to infected wounds, and biocompatibility. The antimicrobial activity was influenced by the amount of AgNP and cross-linking degree, with significant inhibition against Gram-negative bacteria.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Anuor AT. Ayoub, Yushou Song, Mamoun IA. Sagiroun
Summary: This paper presents an assessment of the radiological hazard for humans from nuclear power plant effluent released into a river under normal operation scenarios. The study concludes that the radiological hazard from this effluent is minimal and within acceptable limits according to international standards. It also highlights the potential hazards related to the higher concentration of 137Cs in sediments over time.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Irabati Chakraborty, Nidhi Sinha, Bobby Antony
Summary: This article investigates the electron impact ionization of prebiotic molecules within the interstellar medium. By calculating the electron impact ionization cross section, the study provides insights into the chemistry of these molecules and their interaction with electrons, which play a vital role in the emergence of life's essential building blocks.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
C. V. Vishnu, Antony Joseph
Summary: This study investigated the gamma-ray shielding properties of composite materials made from natural rubber with different proportions of Barium Tungstate. The addition of Barium Tungstate significantly improved the characteristics of gamma radiation shielding. The experimental measurements showed good agreement with theoretical calculations obtained from simulation results.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Derya Mutlu, Idris Karagoz, Harun Sepetcioglu, Urkiye Akar Tarim, Orhan Gurler
Summary: This study examined the properties of epoxy composites with dendritic copper particles and found that the addition of copper particles improved the electrical conductivity and mechanical properties of the composites. The glass transition temperature of the composites could be adjusted by varying the copper particle ratio. The study also evaluated the shielding properties of epoxy-based composites against gamma radiation and found that the addition of copper particles significantly altered the microstructure and mechanical properties of the composites.
RADIATION PHYSICS AND CHEMISTRY
(2024)