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Microstructure and Wear Behavior of Al0.25CoCrFeNiSi0.6 High-Entropy Alloy Coating Deposited on Stainless Steel by Detonation Spraying
Journal of Thermal Spray Technology. 2023. Vol. 32. No. 5. P. 1220–1229.
In this work, the morphology, microstructure, and phase composition of Al0.25CoCrFeNiSi0.6 high-entropy alloy coating (HEAC) deposited on stainless steel by detonation spraying (DS) are investigated. The Al0.25CoCrFeNiSi0.6 HEA ingot was first prepared by induction melting and then crushed and ground to ≤ 100 µm using a planetary ball milling apparatus. Detonation spraying was carried out on a computerized gas–thermal detonation spraying complex CCDS2000. The fabricated coating exhibited a lamellar microstructure with sizes of 5–30 µm and porosity in the range of 0.5–1.2%. Despite the rather large thickness of the coating (1500–1600 μm), its chemical composition remains almost identical across the thickness and corresponds to the stoichiometric ratio. There is no trace of elemental diffusion between the coating and the substrate. In the phase composition, in addition to bcc and fcc solid solutions, Cr3Si intermetallic compound was found. An average microhardness value of 550 ± 25 HV0.3 was obtained over the entire thickness of the coating. The wear rate of the coating was (1.6 ± 0.3) × 10–5 (mm3 N–1 m–1), and the adhesive wear with low level of tribo-oxidation was found to be the main wear mechanism for the coating. The results indicate that DS is superior alternative to other thermal spraying techniques in terms of porosity, interface bonding, and stability of the chemical composition throughout the thickness of the coating.
Das A., Saikia J., Maji N. et al., ChemNanoMat 2026 Vol. 12 No. 5 Article e202500733
Developing efficient photoactive materials from bio-derived resources is vital yet challenging for achieving effective water splitting performance. In this work, nano carbon dots (CDs) of zero-dimensional (0D) were synthesized from papaya peel through a simple and eco-friendly process and subsequently anchored onto the two-dimensional (2D) layered structure of graphitic carbon nitride (g-C3N4, GCN) at various ...
Added: June 2, 2026
Wary R. R., Mahato B., Sharma N. et al., The Journal of Physical Chemistry Letters 2026 Vol. 17 No. 17 P. 5099–5107
Development of heterojunction materials is an efficient approach for enhancing photocatalytic and photoelectrochemical processes. We develop a ZnO/CuO heterojunction via Cu doping into a ZnO matrix. Structural characterization confirmed that Cu was effectively incorporated into ZnO without any structural changes. The improved optical properties and reduced charge carrier recombination of the doped samples were confirmed ...
Added: June 2, 2026
Duran E. ., Pulgar A., Izquierdo R. et al., Physica Status Solidi (A) Applications and Materials 2026 Vol. 223 No. 7 Article e202500942
Ceramic superconductors exhibit remarkable properties, including zero electrical resistance and potent magnetic behavior, operating at temperatures as high as the boiling points of liquid nitrogen (77 K) and liquid hydrogen (20 K). These characteristics position them as key enablers for sustainable technologies spanning electric propulsion, lossless energy transmission, advanced medical imaging, and quantum computation. This review presents ...
Added: June 1, 2026
Андреев Д. В., Корнев С. А., Bondarenko G. et al., Перспективные материалы 2026 № 6 С. 5–11
Выполнено сравнительное исследование процессов сильнополевой зарядовой
деградации подзатворного диэлектрика структур металл-диэлектрик-полупроводник (МДП)
с алюминиевым и поликремниевым затвором. Зарядовые явления в МДП-структурах
изучали методом сильнополевой инжекции электронов в диэлектрик в режиме возрастания
плотности стрессового инжекционного тока с кратковременными переключениями
в измерительный режим при постоянной низкой плотности инжекционного тока.
Использование данного метода позволило получить новые данные о процессах зарядовой
деградации подзатворного диэлектрика МДП-структур с ...
Added: May 21, 2026
Rathish S., Andrey S. Vasenko, Thazhathenair A. et al., The Journal of Physical Chemistry Letters 2026 Vol. 17 No. 18 P. 5386–5394
We demonstrate and rationalize the effect of Au nanoparticles (NPs) on the hierarchical g-C3N4/CeO2 heterojunction. g-C3N4/CeO2 decorated with monodispersed plasmonic Au NPs was synthesized. Detailed analyses showed that CeO2 nanocubes and monodispersed Au NPs were evenly distributed over the 2D g-C3N4 surface, forming a robust interface enriched with abundant active sites. The structure enabled efficient separation of photogenerated charge ...
Added: May 16, 2026
Paul R., Das A., Sharma N. et al., Colloids and Surfaces A: Physicochemical and Engineering Aspects 2026 Vol. 728 Article 138830
Niobium-doped TiO2 (Nb-TiO2), demonstrates dual functionality as an efficient photocatalyst for dye degradation and a promising photoelectrocatalyst for water oxidation. Nb incorporation via a facile hydrothermal method was confirmed by XRD (Rietveld refinement), XPS, TEM, FT-IR, Raman, and BET analyses, indicating successful lattice doping and structural modification. Photocatalytic dye degradation experiments were conducted using a model ...
Added: May 16, 2026
Гущина В. А., / Series chemrxiv-2023-vpzhz-v2 "ChemRxiv". 2023.
All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are being intensively studied due to their unique properties and wide range of applications; however, however, the nature of their optical properties is not yet fully understood due to the difficulty of synthesis of singlephase nanoparticles. In this article we describe the features of the synthesis of single-phase particles ...
Added: May 14, 2026
Гущина В. А., Mendeleev Communications 2025 Vol. 35 No. 2 P. 193–195
All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are intensively studied for their unique optical properties, though synthesizing single-phase nanoparticles has posed challenges. Detailed synthesis method of CsPbBr3 and Cs4PbBr6 single-phase nanoparticles and their chemical and phase analysis are described. Distinctive optical characteristics, such as photoluminescence, optical band gap and the Urbach tail region, are revealed and explained within the current ...
Added: May 14, 2026
Гущина В. А., Physics of Complex System 2026 Vol. 7 No. 1 P. 3–15
Heterostructures based on ZnO nanorods and CsPbBr3 nanocrystals were investigated for their potential as semiconductor SERS substrates. We found that ZnO morphology governs the efficiency of interfacial energy transfer, leading to enhanced photoluminescence under 390 nm excitation and a noticeable reduction of the bandgap in the composites. Raman analysis revealed a pronounced intensity enhancement and ...
Added: May 14, 2026
Гущина В. А., Russian Journal of Inorganic Chemistry 2024 Vol. 69 No. 6 P. 940–948
Currently, ABX3 nanoparticles (NPs) based on lead halides attract the attention due to their unique optical properties and a wide range of applications. The preparation of NPs with lead as a partial or complete replacement is particularly interesting because of the toxicity of this chemical element and most of its compounds. In this study, we propose a ...
Added: May 6, 2026
Yasnitsky L., Голдобин М. А., Мезенцев А. С., Прикладная математика и вопросы управления 2025 № 2 С. 99–116
Представлен обзор современных методов и основанных на них программных
инструментах, применяемых для математического моделирования серийных производственных процессов с целью снижения брака и повышения качества производимых изделий. Перечисляются группы работ, нацеленных на обнаружение и классификацию дефектов, работ, в которых решаются задачи прогнозирования образования дефектов и определения значимости параметров, работ направленных на поиск
оптимального сочетания технологических параметров изготовления изделий, ...
Added: May 5, 2026
Morozov E. V., Demin A. S., Borovitskaya I. V. et al., Inorganic Materials: Applied Research 2026 Vol. 17 No. 3 P. 619–626
This article presents the results of experiments on the impact of powerful pulsed ion-plasma and
electron flows generated in the working chamber of the Plasma Focus PF-5M installation during each highvoltage
discharge on a model aluminum alloy B95. It is shown that the general characteristics of the alloy’s
damage upon exposure to pulsed flows of helium ions (HI) ...
Added: May 4, 2026
Pavlenko V. I., Bondarenko G.G., Cherkashina N. I. et al., Inorganic Materials: Applied Research 2026 Vol. 17 No. 2 P. 276–282
A composite material based on polyethylene, boron carbide (B4C), and bismuth oxide (Bi2O3) is
synthesized by the method of joint cryogenic milling of all components in liquid nitrogen environment followed
by pressing. The effect of cryogenic milling on the distribution of fillers in a composite is studied and
the prospects of using this method are assessed in comparison ...
Added: April 9, 2026
Черкашина Н. И., Павленко В. И., Bondarenko G. et al., Перспективные материалы 2026 № 4 С. 14–26
В данной работе представлен синтез гибкого полимерного композита для защиты от радиации на основе каучуковой матрицы и оксидов редкоземельных металлов, таких как Dy2O3 и Gd2O3, предназначенного для создания радиационно-защитных экранов и средств индивидуальной защиты. Исследованы его физико-механические характеристики: составы с добавлением оксида диспрозия имеют плотность от 1,31 до 2,44 г/см3, предел прочности при растяжении от ...
Added: April 2, 2026
Chowde Gowda C., Alexey Kartsev, Tiwari N. et al., Journal of Materials Chemistry C 2024 Vol. 12 No. 46 P. 18691–18703
Two-dimensional (2D) chromium telluride Cr2Te3 exhibits strong ferromagnetic ordering with high coercivity at low temperatures and paramagnetic behavior when approaching room temperature. The spin states of monolayer Cr2Te3 show ferromagnetic ordering in the ground state. In situ Raman analysis reveals a reversible structure transformation and hence proves ferromagnetic to paramagnetic transition during low-temperature heating cycles (0–25 °C). The magnetic ...
Added: March 16, 2026
Argunov E., Alexey I. Kartsev, Computational Materials Science 2024 Vol. 244 Article 113192
Magnetothermopower and giant magnetoresistance in spinel-type compound has attracted a lot of attention recently. Ab initio computations of the electronic structure and the Seebeck coefficient of the structure are reported. The mixed nature of magnetism was identified to be caused by the competition between ferromagnetic and anti-ferromagnetic impacts, with the corresponding determined exchanged parameters: meV, meV, meV. Seebeck coefficient and electrical conductivity of the compound in the temperature range of K along with its ...
Added: March 16, 2026
Xiao Y., Xue W., Xu N. et al., Rare Metals 2025 Vol. 44 No. 11 P. 8757–8768
Complete collection of target fluids and effective capture of biomolecules are essential when designing and fabricating sensor electrodes. Assembling a conductive metal–organic framework (MOF) film onto a high-surface-area porous aerogel to create a three-dimensional (3D) hierarchically ordered structure represented an effective strategy for fabricating sensor electrodes for body fluid detection. In this study, high-precision, confined ...
Added: March 2, 2026
Skazochkin A. V., Bondarenko G., Kislov S. V. et al., Письма о материалах 2025 Vol. 15 No. 4 P. 277–283
The article presents the results of comparative studies of wear resistance of railway wheel samples with surface modification by ultrafine mineral powders and without modification. The tested samples are made of standard railway wheels made of CT2sp steel (ordinary quality carbon steel — an analogue of Q215 steel (China), A192 steel (USA), and RSt34–2 steel ...
Added: December 9, 2025
Babicheva R., Kumar A., Kiran R. et al., Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 2025 Vol. 56 P. 5646–5663
In the work, simulations using Monte Carlo (MC) and molecular dynamics (MD) methods are carried out to investigate the Nb–Ta–Hf–Zr system refractory high-entropy alloys (HEAs). In particular, the effects of chemical composition and grain boundary (GB) network on short-range ordering (SRO) during combined MC/MD modeling of relaxation mimicking diffusion process are investigated on single-crystalline and ...
Added: November 27, 2025
Ostovari Moghaddam A., Shaburova N. A., Mikhailov D. et al., Journal of Chemical Technology and Metallurgy 2025 Vol. 60 No. 4 P. 645–652
AlCoCrFeNi2.1 eutectic high entropy alloy (HEA)composite coatings reinforced by Al2O3 particles were prepared by detonation spraying (DS) on low alloy steel substrates. The effect of annealing at different temperatures on the microstructure and mechanical properties of the coatings was further studied. The as-deposited AlCoCrFeNi2.1 - 30 wt. % Al2O3 composite coating exhibited a dual-phase FCC+BCC ...
Added: August 29, 2025
Samoilova O., Suleymanova I., Shaburova N. A. et al., Transactions of the Indian Institute of Metals 2025 Vol. 78 Article 195
In this paper, we studied the microstructure, microhardness and phase composition of CoCrFeNiTa0.3 eutectic high-entropy alloy (HEA) in the as-cast state and after 50-h isothermal oxidation at 1000 and 1100 °C in air atmosphere. A eutectic microstructure consisting of a FCC solid solution and a secondary Co2Ta-type intermetallic was formed in the as-cast state, in which the ...
Added: August 29, 2025
Samoilova O., Pratskova S., Shaburova N. et al., Materials 2025 Vol. 18 No. 15 Article 3701
The microstructure, phase composition, and high-temperature oxidation resistance of Fe-free AlCoCrNiNb0.2 and AlCoCr0.5NiNb0.2 high-entropy alloys (HEAs) were investigated. In the as-cast HEAs, niobium was found to mainly release as a Laves phase in the interdendritic region, and its solubility in the dendrites of the BCC solid solution was about 2 at.%. Both samples exhibited parabolic behavior during ...
Added: August 29, 2025
Samoilova O., Pratskova S., Shaburova N. et al., Journal of Materials Engineering and Performance 2025 P. 1–11
The microstructure, phase composition and corrosion resistance of the as-cast CoCrFeNiMox (x = 0.1, 0.3, 0.5) high-entropy alloys (HEAs) in 1 M NaCl and 0.5 M H2SO4 solutions were studied. It was determined that the as-cast samples have a dendritic microstructure, in which the dendrites are a face-centered cubic solid solution, and an σ-phase intermetallic is precipitated into the interdendritic space. ...
Added: June 10, 2025
Roghani H., Borhani E., Jafarian H. R. et al., Wear 2023 Vol. 526-527 Article 204895
In this research, AA1050/AA2024 layered composites were created through six cycles of the ARB process. In this direction, the effect of using the reinforcing nanoparticles and the initial aging process on the mechanical properties and microstructure were researched. Two sheets of AA1050 and one sheet of AA2024 alternatively were used to create the composite. Also, ...
Added: February 18, 2025