Article
Materials Science, Multidisciplinary
Sh Shirazeh Mohabbat, A. A. Sarabi, H. Eivaz Mohammadloo
Summary: In this study, the AZ31 Mg alloy was coated with a one-step zirconium-based conversion coating (ZrCC) by adding adipic acid (AA) and manganese (Mn) as additives. The morphology and composition of the samples were analyzed, and the electrochemical behavior of the coatings was evaluated. The Zr-Mn sample showed the highest polarization resistance and the lowest current density, indicating superior corrosion resistance.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Engineering, Multidisciplinary
Nicola Casari, Annalisa Fortini, Michele Pinelli, Alessio Suman, Alessandro Vulpio, Nicola Zanini
Summary: This paper investigates seven measurement methods used to estimate sand layer morphology and thickness, comparing their capabilities and practicality, and providing guidelines and suggestions on technology, cost, and usefulness for each method.
Article
Materials Science, Multidisciplinary
Xuefeng Xiao, Qingyan Xu, Huan Zhang, Lingling Ma, Lian Hai, Xuefeng Zhang
Summary: Black lithium tantalate (BLT) wafers were prepared by annealing and reduction, resulting in reduced and more uniform oxygen content on the surface. High-temperature annealing helps in stress release and achieving blackening effect easily. The reduction treatment condition determines the quality of the wafers, and good reduction and early treatment technology can produce uniform and consistent blackening wafers.
OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Li He, Sheng Peng, Yong-Sheng Jia, Ying-Kang Yao, Xiao-Wu Huang
Summary: This study analyzed the axial compressive properties of ultra-high-toughness cementitious composite (UHTCC)-confined recycled aggregate concrete (RAC). The results showed that the UHTCC confinement effectively improved the mechanical properties of the concrete structure and controlled the degree of surface failure. The addition of different fiber amounts had different effects on the mechanical performance of the concrete, with steel fiber having the most significant impact on the axial compression properties of UHTCC.
Article
Chemistry, Applied
Zongyuan Han, Xingxia Li, Yubo Liu, Xiqing Yue, Zhaoxia Wu, Jun-Hua Shao
Summary: The study found that pork myosin formed three different aggregation modes, including fibril, amorphous, and hydrogel aggregation, with characteristics such as morphology, size, and charge all influenced by pH levels.
FOOD HYDROCOLLOIDS
(2021)
Article
Energy & Fuels
Grzegorz Ludwik Golewski
Summary: The study demonstrates that adding 20% fly ash has a positive impact on the microstructure of concrete and reduces the size of interfacial microcracks, while adding 30% fly ash may lead to an increase in microcracks in the concrete.
Article
Engineering, Biomedical
Dhuha H. Mohammed, Raghdaa Kareem Jassim
Summary: This study examined the use of thermal vapour deposition (TVD) to coat zirconium (Zr) implants with germanium (Ge), and found that the coated implants had improved physical and chemical properties. The surface roughness and hydrophilicity of the coated implants were significantly higher than the uncoated implants, and the coating showed good adhesion. Coating Zr implants with Ge via TVD enhances the properties of the implants.
JOURNAL OF BIOMIMETICS BIOMATERIALS AND BIOMEDICAL ENGINEERING
(2023)
Article
Mechanics
S. Razorenov, G. Garkushin, A. S. Savinykh, O. G. Klimova-Korsmik, S. A. Shalnova, M. O. Gushchina
Summary: This paper investigates the strength anisotropy of VT6 titanium alloy additively manufactured by laser metal deposition, finding that the alloy demonstrates strength isotropy and its strength characteristics are slightly higher than those of conventionally manufactured industrial specimens. In addition, the concentration of secondary powder during additive manufacturing has no effect on the strength properties of the alloy under both static and dynamic loads.
PHYSICAL MESOMECHANICS
(2022)
Article
Physics, Multidisciplinary
G. Garkushin, A. S. Savinykh, S. Razorenov, S. A. Atroshenko
Summary: The paper investigates the measurements of free surface displacement of 16Cr-20Ni-2Mo-Ti reactor vessel steel specimens at room temperatures and higher. The study reveals that the mechanical inhomogeneity of the steel structure results in a significant variation in the values of Hugoniot elastic limit and spallation strength. The experiments demonstrate the absence of high-pressure hexagonal close packed structure during the compression of the steel specimens.
RUSSIAN PHYSICS JOURNAL
(2022)
Article
Physics, Applied
Mikhail Bannikov, Vladimir Oborin, Yuriy Bayandin, Dmitry Ledon, Dmitriy Kiselkov, Andrey Savinykh, Gennady Garkushin, Sergey Razorenov, Oleg Naimark
Summary: The study reveals that foreign object damage can reduce the fatigue strength of materials during consecutive loading, and examines the transition of fatigue damage and crack initiation through amplitude-frequency analysis. Additionally, profiling measurements are used to identify the roughness scale invariants in damaged areas, contributing to the formulation of crack propagation laws.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Applied
G. I. Kanel, G. V. Garkushin, A. S. Savinykh, S. V. Razorenov, I. V. Paramonova, E. B. Zaretsky
Summary: This study investigated the evolution of shock compressive pulses and dynamic tensile (spall) strength in pure [100]-oriented molybdenum single crystals through a series of planar impact tests. The results showed that pre-straining reduced the molybdenum Hugoniot elastic limit while increasing the dynamic tensile (spall) strength. The spall fracture was found to be brittle with a weak dependence on the tensile strain rate.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Applied
A. Yu Dolgoborodov, S. Yu Ananev, V. V. Yakushev, T. A. Rostilov, V. S. Ziborov, M. L. Kuskov, A. N. Zhigach, V. G. Kirilenko, V. A. Pirog, L. Grishin, G. E. Valyano
Summary: This study investigated the shock compression of porous nickel and found that the Hugoniot and expansion isentropes of nanosized nickel particles were consistent with micron-sized nickel. The Hugoniot calculated based on the equation of state for porous nickel was also in good agreement with experimental data. It was also observed that in the middle pressure range, the expansion isentropes became flatter as the particle velocity increased.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Green & Sustainable Science & Technology
Olesya A. Buryakovskaya, Anna Kurbatova, Mikhail S. Vlaskin, George E. Valyano, Anatoly Grigorenko, Grayr N. Ambaryan, Aleksandr O. Dudoladov
Summary: By comparing the reaction characteristics of hydroreactive powders with different additives in a saline solution, it was found that adding different substances has different effects on reaction rate and hydrogen yield. These differences can be explained by variations in particle size, accumulated crystal lattice defects during ball milling, the morphology of the solid reaction product covering the particles, and the effects of the alloy and metal scrap components on the reaction.
Article
Materials Science, Ceramics
A. I. Savvatimskiy, S. V. Onufriev, G. V. Valyano, A. A. Nepapushev, D. O. Moskovskikh
Summary: This study investigated the physical properties of tantalum carbide at high temperatures ranging from 2000 to 5500 K. The experimental results revealed that this composition of carbide melts within a narrow temperature range of 4100-4300 K, and the enthalpy values at the beginning and end of melting were measured. Additionally, the specific heat and electrical resistance of the solid and liquid states of tantalum carbide were determined experimentally. The study also provides new data on the liquid phase properties of tantalum carbide.
CERAMICS INTERNATIONAL
(2022)
Article
Physics, Applied
E. B. Zaretsky, N. Frage, S. Kalabukhov, A. S. Savinykh, G. Garkushin, S. Razorenov
Summary: The impact response of annealed polycrystalline vanadium of commercial purity was studied with pre-straining. It was found that the initial dislocation density was the main parameter affecting the strength of the material, and pre-straining completely suppressed twinning in the samples.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Alexander Dolgoborodov, Timofei Rostilov, Sergey Ananev, Vadim Ziborov, Leonid Grishin, Mikhail Kuskov, Alexey Zhigach
Summary: The structure of shock waves in pressed porous samples of nickel nanoparticles was investigated, and a complex response of the nanomaterial to shock loading, including the development of a two-wave structure associated with precursor and compaction waves, was observed.
Article
Energy & Fuels
A. Z. Zhuk, E. I. Shkolnikov, T. I. Borodina, G. E. Valiano, A. V. Dolzhenko, E. A. Kiseleva, S. A. Kochanova, E. D. Filippov, V. A. Semenova
Summary: The study introduces a new hydrogen generation system, consisting of an aluminum-based hydrogen generating composition and a fully automated generator. The composition was synthesized using mechanochemical activation of aluminum powder with Bi and Sn as additives. The system achieved a high rate of hydrogen evolution and yield through maintaining a temperature of at least 70 degrees C in the reaction zone. Feasibility estimations of the system are presented.
Article
Mechanics
S. V. Razorenov, G. V. Garkushin, A. S. Savinykh, O. G. Klimova-Korsmik
Summary: Strength measurement results were obtained for hot-rolled cast cold-resistant structural alloy steel 09CrNi2MoCu subjected to shock compression. The effect of deposition direction and shock compression amplitude on the Hugoniot elastic limit and critical stresses during spall fracture was investigated. The spall strength of the cast steel specimens was found to be independent of the shock compression pressure but dependent on the strain rate before spalling.
PHYSICAL MESOMECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Sergey Razorenov, Gennady Garkushin, Andrey Savinykh, Vladimir Promakhov, Alexey Matveev, Olga Klimova-Korsmik, Alexander Vorozhtsov
Summary: The Hugoniot elastic limit and spall strength of Inconel 625-5%NiTi-TiB2 alloy additive manufactured by direct laser deposition were measured. The strength characteristics were obtained from wave profiles recorded during shock-wave loading. Anisotropy of strength properties was observed in the alloy. The addition of 5% of NiTi-TiB2 powder led to a decrease in elastic limit and critical fracture stresses upon spalling by over 10%.
Article
Chemistry, Analytical
Yuri D. Ivanov, Kristina A. Malsagova, Kristina V. Goldaeva, Tatyana O. Pleshakova, Andrey F. Kozlov, Rafael A. Galiullin, Ivan D. Shumov, Vladimir P. Popov, Irina K. Abramova, Vadim S. Ziborov, Oleg F. Petrov, Alexander Yu. Dolgoborodov, Alexander I. Archakov
Summary: This study aimed to test the performance of a nanoribbon biosensor in detecting the core antigen of hepatitis C virus, and compared two different types of molecular probes. The results showed that the nanoribbon biosensor could detect an antigen concentration of approximately 10(-15) M in a buffer with pH 5.1, regardless of the type of probe used.
Article
Chemistry, Multidisciplinary
Grayr N. Ambaryan, Olesya A. Buryakovskaya, Vinod Kumar, Georgii E. Valyano, Elena A. Kiseleva, Anatoly V. Grigorenko, Mikhail S. Vlaskin
Summary: This study investigates the hydrothermal oxidation of aluminum, a exothermic process that produces hydrogen and aluminum oxide (or hydroxide). The chemical purity of aluminum was found to significantly affect the oxidation kinetics, with more pure aluminum oxidizing much faster.
APPLIED SCIENCES-BASEL
(2023)
Article
Metallurgy & Metallurgical Engineering
A. M. Molodets, A. S. Savinykh, A. A. Golyshev, G. Garkushin, G. Shilov, A. N. Nekrasov
Summary: This study verifies the microstructural characteristics of original textured tungsten samples and measures the free surface velocities of the samples in shock-wave experiments. The dynamic yield strength and spall strength values are determined for samples of various thicknesses. Mathematical modeling is conducted using the hydrocode algorithm, incorporating original equations of state, an elastoplastic model, and an instantaneous spall approximation. The reliability and predictive capabilities of simulating the physical and mechanical behavior of textured tungsten under shock-wave compression and high-speed tension conditions are discussed.
PHYSICS OF METALS AND METALLOGRAPHY
(2022)
