Article
Materials Science, Multidisciplinary
O. O. Shichalin, I. Yu. Buravlev, E. K. Papynov, A. V. Golub, A. A. Belov, A. A. Buravleva, V. N. Sakhnevich, M. I. Dvornik, N. M. Vlasova, A. V. Gerasimenko, V. P. Reva, A. A. Yudakov
Summary: The paper introduces a method of fabricating tungsten carbide-based hard alloys and compares the characteristics of the obtained samples. By synthesizing the samples using spark plasma sintering (SPS) at different temperatures, the study investigates the effects on characteristics such as porosity. The results show that the volume content of WC decreases in alloys containing Ti and Cr after sintering, while it remains stable in alloys containing Co, Ni, and Fe.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Oleg O. Shichalin, Evgeniy K. Papynov, Igor Yu. Buravlev, Anastasiya A. Buravleva, Sergey V. Chuklinov, Ekaterina A. Gridasova, Anton V. Pogodaev, Valreiia A. Nepomnyushchaya, Zlata E. Kornakova, Alexey O. Lembikov, Danila V. Gritsuk, Olesya V. Kapustina, Sofia S. Gribanova, Yun Shi
Summary: The paper presents a method of producing functionally graded material (FGM) using spark plasma sintering (SPS) technology with joined metals Cr-Ti-Fe-Co-Ni-Cu. The structure, elemental and phase composition of the obtained FGM were analyzed through SEM, EDS, and XRD methods, along with evaluation of the mechanical characteristics based on Vickers microhardness data. The results of this study provide potential for FGM and functionally graded coatings (FGC) in industrial applications, due to their unique physical, chemical, and mechanical properties.
Article
Materials Science, Composites
Adeola Oketola, Tamba Jamiru, Adesola T. Adegbola, Olugbenga Ogunbiyi, Azeez L. Rominiyi, Smith Salifu
Summary: By adding ZrO2 additive, the densification and mechanical properties of Ni-Cr-ZrO2 composites can be improved, especially in terms of hardness and elastic modulus. Increasing the ZrO2 content also significantly enhances the wear performance of the composites.
JOURNAL OF COMPOSITE MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Oleg O. Shichalin, Vladimir N. Sakhnevich, Igor Yu Buravlev, Aleksey O. Lembikov, Anastasia A. Buravleva, Semen A. Azon, Sofia B. Yarusova, Sakhayana N. Danilova, Alexander N. Fedorets, Anton A. Belov, Evgeniy K. Papynov
Summary: The material based on the binary system Ti + Cu (50% atm) was studied, and intermetallic phases including CuTi2, TiCu, and Ti3Cu4 were obtained. The material exhibited good hardness, microhardness, and corrosion resistance, with the variation in hardness being attributed to the presence of pure metal agglomerates. Furthermore, the relationship between the temperature of spark plasma sintering and the material characteristics was revealed.
Article
Materials Science, Ceramics
V. L. Arantes, J. Sakihama, J. Vleugels
Summary: In this study, a Functionally Graded Material (FGM) with high hardness up to 25.1 GPa and good fracture toughness was successfully produced by using step graded Al2O3/NbC composites consolidated by Spark Plasma Sintering (SPS). The designed compositional gradient was maintained after sintering, resulting in fully dense crack-free graded bodies.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Elder Soares, Nadege Bouchonneau, Elizeth Alves, Kleber Alves, Oscar Araujo Filho, David Mesguich, Geoffroy Chevallier, Christophe Laurent, Claude Estournes
Summary: The study utilized commercial AA7075 aluminum alloy powder to prepare dense samples by Spark Plasma Sintering, with results showing that samples prepared using ball-milled powder exhibited higher hardness and transverse fracture strength values, reflecting a finer microstructure.
Article
Materials Science, Multidisciplinary
Neal D. D. Gaffin, Caen Ang, Justin L. L. Milner, Kelsa B. Palomares, Steven J. J. Zinkle
Summary: Molybdenum alloys were consolidated using spark plasma sintering to determine the optimum sintering conditions. Higher sintering pressures are necessary to achieve higher sample density at lower temperatures. The hardness of the sintered material increased due to solid solution strengthening.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Ceramics
D. W. Zhang, Y. Zhang, Y. F. Cai, B. W. Zang, F. Zhao, Y. C. Wang, R. Umetsu, Z. Z. Li, X. Tong, J. T. Huo, S. L. Che, J. Q. Wang
Summary: Amorphous powder compacts of Fe77.7Si8B10P4Cu0.3 with high relative density (rho r = 94%), high saturated magnetic induction (Bs = 1.34 T), and high permeability (mu = 163 at 20 kHz) were fabricated by spark plasma sintering. Fe77.7Si8B10P4Cu0.3 spherical amorphous powders with good amorphous forming ability were prepared by regulating the material composition and the particle size distribution using gas atomization.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
Jose Sanchez del Rio, Alicia Paez-Pavon, Jose M. Torralba, Dariusz Garbiec, Jose S. Moya, Sonia Lopez-Esteban, Carlos Pecharroman
Summary: The feasibility of sintering Portland cement clinker powders by Spark Plasma Sintering (SPS) has been studied. Different SPSed compacts have been successfully obtained by this technique. The compacts have been characterized and it is found that slight mineralogical variations in the starting compositions may induce dramatic changes in the final mineralogical composition and morphology, affecting the properties of the SPSed compacts. The emergence of two transitory eutectic liquids is explained in a new model describing the formation of garnets, which allows for the creation of artificial garnets in the laboratory by applying low pressures, opening the door to compositions for specific applications with high added value.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Supreeth Gaddam, Amit Kishan Behera, Noriaki Arai, Qiaofu Zhang, Rajiv S. Mishra
Summary: This study reports the effect of ball milling time and sintering temperature on the microstructure, binder distribution, hardness, and indentation fracture toughness of NbC-Ni cermets synthesized using mechanical mixing (MM) and spark plasma sintering (SPS) method. Insufficient milling time resulted in inhomogeneous binder distribution in the consolidated cermets, while sintering above a certain temperature resulted in complete loss of binder. Therefore, a combination of sufficient milling time and an appropriate sintering temperature was essential to obtain a consolidated cermet with a homogeneous microstructure and uniform mechanical properties.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Materials Science, Ceramics
Nasrin Heidari, Fatemeh Davar, Amir Alhaji
Summary: In this project, magnesia-alumina composite granules were prepared using the spray drying method and then sintered at temperatures of 1400 degrees C to 1500 degrees C by spark plasma sintering without using any sintering aids. The study focused on the effects of sintering temperature on the phase evolution, density, fracture toughness, and light transmission properties of the samples. Results showed that the sample sintered at 1400 degrees C had better transparency and higher density, hardness, and fracture toughness compared to the sample sintered at 1500 degrees C.
CERAMICS INTERNATIONAL
(2022)
Review
Chemistry, Multidisciplinary
M. Somasundaram, Narendra Kumar Uttamchand, A. Raja Annamalai, Chun-Ping Jen
Summary: This review paper focuses on the microstructural, mechanical, biological, and corrosion resistance properties of spark plasma sintered magnesium (Mg) composites. Various researchers have optimized the composition, processing techniques, and surface modifications to overcome the issue of oxidation. The reinforcement material affects the mechanical properties and corrosion resistance of Mg composites. Further research is needed on the impact of process parameters on the quality of Mg composites.
Article
Materials Science, Ceramics
Alexandre Margueret, Luca Balice, Karin Popa, Michael Holzhaeuser, Emanuele De Bona, Walter Bonani, Antonio Bulgheroni, Fabienne Audubert, Marco Cologna
Summary: We analyzed the densification of UO2 nanopowders in SPS under different conditions and found that the apparent activation energy of densification in SPS is smaller than that in conventional sintering. We also observed a threshold stress for the transition from pressure-insensitive sintering to pressure-assisted sintering.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Luca Balice, Marco Cologna, Fabienne Audubert, Jean-Louis Hazemann
Summary: A direct method for calculating the apparent activation energy and stress exponent in the sintering of UO2 was proposed, with grain boundary diffusion coupled with grain boundary sliding as the densification mechanism. The activation energy in SPS was found to be lower compared to other processes, possibly due to the effect of the electric field combined with higher heating rates.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Muthuchamy AyyappaRaj, Digvijay Yadav, Dinesh K. Agrawal, Raja Annamalai Arunjunai Rajan
Summary: By adding La(2)O(3) to WHA with a ternary composition of W-7Ni-3Fe, this study achieved control over sintered density, grain size, hardness, and UTS, providing important references for the preparation of the alloy.
Article
Metallurgy & Metallurgical Engineering
A. A. Nikulina, N. Plotnikova, E. E. Kornienko, A. C. Fedorino, S. Dolgova
Summary: This study investigated the structural characteristics and mechanical properties of surfacing layers prepared by pulsed arc surfacing with austenitic wire A7-1G on high-carbon steel e76. The results showed that pulsed arc melting could form various austenitic and pearlitic steel compounds, and a fine ferrite-pearlite mixture with a minimum ferrite grain size of 1 μm was present in the heat-affected zone of the carbon steel. These characteristics of the heat-affected zone structure were favorable for providing the required crack resistance indices.
Article
Energy & Fuels
Pavel B. Kurmashov, Alexander G. Bannov, Maxim Popov, Andrey E. Brester, Arina Ukhina, Arkady Ishchenko, Evgenii A. Maksimovskii, Lyudmila Tolstobrova, Arsenii O. Chulkov, Gennady G. Kuvshinov
Summary: The catalyst for decomposing methane to carbon nanofibers and hydrogen was successfully prepared using the solution combustion technique. The dynamics of temperature change during the redox reaction process of catalyst synthesis was experimentally determined. Testing of the catalyst showed that under optimal conditions of temperature and pressure, high specific yield of hydrogen could be achieved.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Metallurgy & Metallurgical Engineering
A. A. Nikulina, N. Plotnikova
Summary: This study investigates materials obtained by non-vacuum electron beam cladding of powder mixtures containing chromium, nickel, and titanium onto steel E76 billets. The structure, chemical composition, and microhardness of the deposited layers are determined. The results show flaw-free layers with complex structures and high hardness.
METAL SCIENCE AND HEAT TREATMENT
(2022)
Article
Nanoscience & Nanotechnology
Mariia Rashkovets, Nikita Kislov, Marina Gushchina, Aelita Nikulina, Albert Popelukh, Olga Klimova-Korsmik
Summary: The microstructural and phase characteristics of AM samples prepared by Direct Laser Deposition with different levels of energy efficiency were studied. In the heat-treated state, gamma' phase was identified as the main strengthening phase, while NbC, NbNC and Laves phase were found in the as-deposited state.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
T. S. Gudyma, N. I. Lapekin, M. V. Popov, A. G. Bannov
Summary: Graphite oxides obtained by a modified Hummers method were studied using various techniques. It was found that using ice instead of water during the reaction can ensure optimal hydrolysis and prevent overheating. The ice content in the reaction mixture was also found to affect the properties of graphite oxide. Additionally, using frozen hydrogen peroxide was proposed to reduce the number of reaction stages.
SOLID FUEL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Zhongyou Peng, Alexander G. Bannov, Shulong Li, Yuting Huang, Ling Tang, Licheng Tan, Yiwang Chen
Summary: This study reports a new method for synthesizing phosphorus and nitrogen dual-doped hierarchical ordered porous carbon (PN-HOPC) with matchable pore size and adequate active sites, which is significant for large-scale Zn2+ storage. The optimized PN-HOPC exhibits outstanding Zn2+ storage capabilities in terms of high capacity, superb energy density, and ultralong lifespan.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Aleksandr I. Aparnev, Anton V. Loginov, Nikolai Uvarov, Valentina Ponomareva, Irina Bagryantseva, Anton Manakhov, Abdulaziz S. Al-Qasim, Valeriy V. Golovakhin, Alexander G. Bannov
Summary: The proton conductivity and structural properties of (1-x)CsH2PO4-xZnSnO(3) composites were investigated. Zinc stannate ZnSnO3 was synthesized and used as a matrix for the formation of the composite electrolytes. The study showed an increase in proton conductivity in the composites, reaching a maximum at x = 0.2, and then decreasing due to the percolation effect. Zinc stannate was demonstrated to be a potential additive in other composite solid electrolytes.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Pavel B. Kurmashov, Arina V. Ukhina, Anton Manakhov, Arkady V. Ishchenko, Evgenii A. Maksimovskii, Alexander G. Bannov
Summary: This study investigated the synthesis of a 90% Ni/Al2O3 catalyst through solution combustion synthesis using various fuels. Catalysts with a high content of nickel were obtained by combusting mixtures of Ni(NO3)2·6H2O and Al(NO3)3·9H2O with different fuels. The efficiency of the fuels and their effect on the structure, properties, and catalytic activity of the catalysts were evaluated. The catalyst was used for methane decomposition to produce hydrogen and carbon nanofibers, with the highest activity achieved when citric acid was used as the fuel.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Analytical
Nikita I. Lapekin, Pavel B. Kurmashov, Tatyana V. Larina, Yurii A. Chesalov, Dmitry S. Kurdyumov, Arina V. Ukhina, Evgene A. Maksimovskiy, Arcady V. Ishchenko, Vitalii I. Sysoev, Alexander G. Bannov
Summary: In this study, room-temperature chemiresistive gas sensors for NO2 detection based on carbon nanofibers (CNFs) grown using chemical vapor deposition (CVD) were investigated. Various techniques such as transmission electron microscopy, low-temperature nitrogen adsorption, and X-ray diffraction were used to analyze the carbon nanomaterials. The synthesis of CNFs at different pressures was carried out using a COx-free decomposition method. The sensors based on CNFs synthesized at 1 bar showed promising responses to NO2 at different concentrations. The study also found that the increase in relative humidity enhanced the response of CNFs synthesized at elevated pressures.
Article
Biochemistry & Molecular Biology
Valeriy Golovakhin, Ekaterina Yu. Kim, Oksana N. Novgorodtseva, Evgene A. Maksimovskiy, Arina V. Ukhina, Arcady V. Ishchenko, Alexander G. Bannov
Summary: The aim of this study is to investigate the treatment of multi-walled carbon nanotubes (MWCNTs) with dichromic acid. Various analytical techniques were used to examine the texture characteristics, elemental composition, defectiveness, graphitization degree, and surface chemistry of MWCNTs after treatment with different concentrations of dichromic acid. It was found that the treated MWCNTs showed a decrease in average diameter, an increase in surface oxygen content, and the formation of Cr2O3. High angle annular dark field scanning transmission electron microscopy confirmed the intercalation of the chromium-containing compound between graphene layers. The highest specific capacitance of the treated MWCNTs was 141 F g(-1) (at 2 mV s(-1)) compared to 0.3 F g(-1) for the untreated sample.
Article
Nanoscience & Nanotechnology
Sunil Kumar, Veronika A. Dmitrieva, Gang Meng, Stanislav A. Evlashin, Ekaterina V. Sukhanova, Dmitry G. Kvashnin, Zakhar I. Popov, Alexander G. Bannov, Fedor S. Fedorov, Albert G. Nasibulin
Summary: We improved the sensitivity of NO2 analyte by adjusting the width ratio of adjacent graphene oxide (GO) and reduced graphene oxide (rGO) layers using GO laser reduction technique. The reduction of GO led to a chemiresistive response to NO2, and an optimum GO/rGO width ratio achieved a chemiresistive response of 18.1% towards 100 ppm of NO2 with a limit of detection of 230 ppb. The enhanced chemiresistive response of GO/rGO sensors to NO2 physisorption was attributed to increased sorption energy and improved charge transfer at the GO/rGO interface area compared to fully reduced GO.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Composites
Evgeniy N. Egorov, Evgeniia V. Salomatina, Vladislav R. Vassilyev, Alexander G. Bannov, Sergey I. Sandalov
Summary: The article investigates the impact of polynorbornene (PNB) in the composition of PNB with Norman 747 LV plasticizer (RC) on the curing characteristics and properties of vulcanizates based on different rubbers. The results show that an increase in the content of RC and PNB in the rubber compound leads to lower tensile strength, hardness, tear resistance, and storage modulus of vulcanizates. However, a specific composition with 24.0 phr (8.98 wt.%) of PNB in RC exhibits stable physico-mechanical properties, improved vibration absorption, and increased dielectric parameters, making it suitable for rail fasteners.
JOURNAL OF COMPOSITES SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
A. A. Shestakov, A. E. Brester, N. I. Lapekin, M. V. Popov, N. S. Lazarenko, A. V. Ukhina, E. A. Maksimovskii, A. G. Bannov
Summary: The AC electrical properties of epoxy composites based on carbon black and multi-walled carbon nanotubes were determined. The conductivity of the composites increases with an increase in the carbon content. It is found that adding very low concentrations of MWCNTs to the epoxy resin/CB composite leads to an increase in specific conductivity. The addition of small loadings of MWCNTs allows for a significant increase in low-frequency permittivity values.
NANOBIOTECHNOLOGY REPORTS
(2022)
