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Article
Chemistry, Physical
Roya Boodaghi Malidarre et al.
Summary: The current study investigates the radiation shielding, optical, structural, and physical properties of SeTe chalcogenide alloys after incorporating Ag as a chemical modifier. Four different composites labeled as SeTeAg-2, SeTeAg-5, SeTeAg-7, and SeTeAg-10 are irradiated by gamma photons for a wide energy range. The results show that SeTeAg-10 offers excellent gamma photon shielding performance and the SeTeAg composites are rigid materials with preferred chalcogenide glass properties.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Carlos Arreola-Fernandez et al.
Summary: The dry sliding wear behavior of a Magnesium-AZ91E alloy and aluminum nitride reinforced composites was investigated, revealing that abrasion and oxidation were the dominant wear mechanisms. The composites exhibited superior wear resistance up to 10 times higher than the base alloy.
Article
Nanoscience & Nanotechnology
Tao Wang et al.
Summary: Hot rolling deformation was performed to improve the microstructure compactness and mechanical properties of powder metallurgy (P/M) AZ31 magnesium alloy. The results showed that the rolling reduction had a significant effect on the microstructure and mechanical properties of the alloy. With an increase in rolling reduction, the shape of prior particles changed, the grain size decreased, and preferred orientation distribution developed. The relative density, ultimate tensile strength, and Vickers hardness increased, while the elongation decreased. A strong basal texture was formed in the alloy after hot rolling.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Iskender Akkurt et al.
Summary: The present study investigates the radiation shielding, physical, structural, and mechanical qualities of different types of marble concrete using FLUKA code, Phy-X/PSD software, and analytical method. The results show that MC25%, the thinnest type, is needed to reduce the initial intensity to half, requiring less volume of shielding material. MC10% exhibits the highest Energy Absorption Buildup Factor (EABF) and Exposure Buildup Factor (EBF) at 40 mfp. Moreover, the Transmission Factor (TF) of the marble concrete samples reveals a decrease in efficiency as energy increases. The Makishima-Mackenzie Model (MMM) is used to evaluate the structural and mechanical properties of the selected shielding materials, showing a decrease in elastic moduli from MC0% to MC25%, with the highest values of mechanical moduli requiring the highest values of bond dissociation energy (Gt).
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Physical
Roya Boodaghi Malidarre et al.
Summary: In this study, researchers improved the negative aspects of borosilicate glasses by adding different ratios of Ag2O. The results showed that Ag2O significantly enhanced the structural, optical, and electrical properties of the glasses.
Article
Metallurgy & Metallurgical Engineering
Seyed Kiomars Moheimani et al.
Summary: This study investigated the dry sliding wear properties of AZ31 magnesium alloy and B4C-reinforced AZ31 composites with bimodal sizes. The results showed that the hardness of the composites increased with the reinforcement content when the distribution of B4C particles was uniform. The composites with 5 and 10 wt.% B4C exhibited significantly higher wear resistance in all conditions, while the composite with 20 wt.% B4C had lower resistance at high sliding speeds and high loadings. The highest wear resistance was observed at high sliding speeds and low loadings, with oxidative wear as the dominant mechanism.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Mahammod Babar Pasha et al.
Summary: The wear resistance of magnesium was improved at elevated temperatures by adding Si3N4 nanoparticles, leading to increased hardness and nearly constant wear rate up to 200 degrees C for nanocomposites, with a shift in dominant wear mechanisms.
Article
Chemistry, Physical
Roya Boodaghi Malidarre et al.
Summary: This paper studies the radiation shielding, structural, and mechanical features of Hydroxyapatite (HAP) bio-composites. By inserting materials such as TiO2 and CeO2, the performance of these bio-composites can be improved. Artificial Neural Network predicts the behavior of the system, and FLUKA Monte Carlo Code extracts photon and electron spatial maps.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Nuclear Science & Technology
M. Y. Hanfi et al.
Summary: The mechanical moduli and microhardness of TeO2-MgO glasses were theoretically calculated using the Makishimae-Mackenzie model, showing improved properties with higher MgO content. The radiation shielding capacity of the studied glasses was evaluated, with TM10 glass exhibiting the highest linear attenuation coefficient and TM45 glass showing the lowest value. The BXCOM program was used to calculate the effective atomic number and buildup factors of the glasses, as well as the effective removal cross-section for fast neutrons.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Aljawhara H. Almuqrin et al.
Summary: The fabrication of TePbMgX glass system was done using the standard melt quenching method. Increasing the PbO content in the glasses resulted in a decrease in moduli values and band gap energies. The study showed that the glass system has highly effective attenuation performance for low energy radiation and becomes worse attenuators for high energy radiation.
Article
Materials Science, Multidisciplinary
Da Shu et al.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)
Article
Materials Science, Multidisciplinary
Shizhe Zhao et al.
