Article
Polymer Science
Jan Raffael Rosello Jimenez, Florian Fuchs, Leonie Schmohl, Michaela Schulz-Siegmund, Andreas Koenig
Summary: This in vitro study investigated the mechanical properties of different materials used in 3D-printed occlusal splints and examined the effects of aging processes. The results showed that printed dimethacrylate-based resins had higher mechanical properties compared to methacrylate-based resins, suggesting their suitability for specific applications.
Article
Chemistry, Physical
Jiamei Guo, Zheng Jia
Summary: It has been well established that lithiation of crystalline silicon occurs through a one-step two-phase mechanism, while other high-capacity anode materials go through a two-step charging process. Little attention has been given to the charging mechanics of anodes undergoing two-step charging, but a model developed in this study using the finite element method reveals that the unique charge-carrier concentration profile and elastic softening of anode materials lead to effective stress mitigation during the second step of charging, resulting in tough charging behavior.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Ceramics
Farid Movassagh-Alanagh, Amir Abdollah-Zadeh
Summary: TiBCN coatings with different B/C ratios were applied on H13 steel using plasma-assisted chemical vapor deposition, improving the working life time of industrial tools under severe wear conditions. The introduction of B and C elements changed the coating's crystalline orientation and decreased crystal size due to the formation of amorphous phases. The flow ratio of CH4 to BBr3 influenced the coating's mechanical properties, and increasing coating's C content improved its nano-wear resistance.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Chemical
Md. Imran H. Khan, Nishane Patel, Md Mahiuddin, M. A. Karim
Summary: This research aims to investigate the micro-level mechanical properties of plant-based food materials (PBFM) during drying and establish relationships between the elastic modulus, hardness, and stiffness and the moisture content. The study found that the mechanical properties of PBFM remained steady in early stages of drying, but significantly increased in later stages, establishing essential relationships with moisture content during drying.
JOURNAL OF FOOD ENGINEERING
(2021)
Article
Physics, Multidisciplinary
Dong Zhang, D. Y. Li
Summary: Determination of intrinsic Young's modulus is crucial for material design and applications. Commonly used micro/nano-indentation method does not accurately measure the intrinsic Young's modulus due to the presence of local damage. This study proposes an extrapolation method to determine the intrinsic Young's modulus by analyzing the load curve as the indentation load approaches zero. Comparison of indentation behaviors with acoustic measurements reveals that intrinsic Young's modulus provides more accurate material ranking.
Article
Materials Science, Multidisciplinary
Philipp Kiryukhantsev-Korneev, Alina D. Sytchenko, Pavel A. Loginov, Anton S. Orekhov, Evgeny A. Levashov
Summary: Mo-Zr-Si-B coatings were prepared by high-power impulse magnetron sputtering at different frequencies, and their structures and properties were studied. The coatings deposited at 50 Hz showed better wear resistance, oxidation resistance, and thermal stability.
Article
Chemistry, Multidisciplinary
Martin Rejhon, Xinliu Zhou, Francesco Lavini, Alessandra Zanut, Filip Popovich, Lorenzo Schellack, Lukasz Witek, Paulo Coelho, Jan Kunc, Elisa Riedo
Summary: It is discovered that two-layer epitaxial graphene films on SiC can undergo a pressure activated phase transition into a sp(3) diamene structure at room temperature, which can significantly increase the hardness of SiC. The hardness increase can reach up to 100% at low loads and up to 30% at high loads. These improved mechanical properties can be explained by the formation of diamene under the indenter's pressure.
Article
Engineering, Manufacturing
Bryan Lim, Hansheng Chen, Zibin Chen, Nima Haghdadi, Xiaozhou Liao, Sophie Primig, Sudarsanam Suresh Babu, Andrew J. Breen, Simon P. Ringer
Summary: Electron beam powder bed fusion (E-PBF) can produce nickel-based superalloy components with minimal cracking and post-processing. However, variations in thermal signatures along the build direction inherent in alloys printed using E-PBF can drive significant changes in the microstructure and associated mechanical properties of the components, as evidenced by an increase in mean elastic modulus and hardness as a function of build height.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Michael Schwaighofer, Luis Zelaya-Lainez, Markus Koenigsberger, Markus Lukacevic, Sebastian Serna-Loaiza, Michael Harasek, Olaf Lahayne, Valentin Senk, Josef Fuessl
Summary: Lignin, a by-product of the pulp and papermaking industry, has potential for development as renewable materials. However, its mechanical properties and dependence on extraction process and feedstock are unknown. This study tested five different lignins extracted using different processes and feedstocks. Evaluation and microstructure analysis showed reliable indentation properties of the porous lignins, and micromechanics homogenization theory revealed the similar mechanical properties of solid lignin in all samples, regardless of chemical structure, with a Young's modulus of 7.1 GPa.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Physical
Alessandro Schiavi, Claudio Origlia, Alessandro Germak, Andrea Prato, Gianfranco Genta
Summary: This study describes the experimental method and calculation model for determining the indentation moduli, work, and creep of metallic materials using macro-scale forces at room temperature. Various measurements and analysis methods were used to accurately determine these properties, with illustrative tests conducted on metal and alloy samples. Discussions were made regarding the suitability of the proposed methods and analysis.
Article
Materials Science, Ceramics
Xufeng Zhang, Huidan Zeng, Xin Wang, Weichang Li, Lili Hu, Shubin Chen
Summary: The effect of replacing P2O5 with different amounts of TiO2 on the crystallization, structure, and mechanical properties of an MgO-Al2O3-SiO2 system was investigated. The results showed that adding TiO2 favored the precipitation of fine grains and significantly increased the Vickers hardness, Young's modulus, and fracture toughness of the glasses. Introducing an appropriate amount of TiO2 can make a glass structure more compact, promote crystallization, and improve the mechanical properties of MgO-Al2O3-SiO2 glass-ceramics.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Alexandre Le Coz, Guillaume R. Durand, Louis Cornet, Nathalie Herbert, Francis Gouttefangeas, Loic Joanny, Fabrice Celarie, Francois Chevire, Odile Merdrignac-Conanec
Summary: Lanthanum oxysulfide (La2O2S) was investigated as a transparent infrared ceramic with stronger chemical bonds and superior mechanical performances than non-oxide infrared materials. The powders prepared by combustion synthesis followed by sulfurization treatment were hot-pressed to form La2O2S ceramics. Various techniques were used to characterize the powders and ceramics and determine their purity, microstructure, optical, and mechanical properties. The study provides the first transmission spectra, Poisson's ratio, Young's and shear moduli, and fracture toughness values of La2O2S polycrystalline ceramics. The ceramics showed transparency in the 2-11 μm range and outperformed commercial infrared ceramics in terms of mechanical performances. The best transmission (89% of theoretical transmission) was achieved at 7.3 μm for 1 mm-thick ceramics hot-pressed at 1200-1250 degrees C.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Engineering, Biomedical
Ting Wu, Xinyue Zhang, Kai Chen, Qin Chen, Zhenyang Yu, Cunao Feng, Jianwei Qi, Dekun Zhang
Summary: In this study, Nano-ZnO was synthesized on the surface of PEEK powder through a one-step hydrothermal method to enhance the binding force with the PEEK matrix. The PEEK-based nanocomposites showed both good antibacterial properties and excellent wear resistance, with a compressive strength of up to 319.2 MPa.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
George S. Manyali
Summary: This paper investigated hcp Re in terms of its structural, elastic, mechanical, and thermodynamic properties using density-functional theory (DFT). The results showed that Re has a high bulk modulus but low Vicker's hardness, making it a typical solid with specific properties.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Geological
Zhaoyang Ma, Ranjith Pathegama Gamage, Chengpeng Zhang
Summary: This study investigated the mechanical properties of alpha-quartz using molecular dynamics simulations of nanoindentation tests. The results showed that the reduced Young's modulus and hardness increase with indentation depth, while decrease with indenter tip size. The findings provide valuable insights into the precise measurement of rock mineral mechanical properties at micro- and nano-scales.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2021)
