Inorganic Materials: Applied Research最新文献

{"title":"Regulation of Sulfur Concentration in Molybdenum Sulfide Layers for Qualitative Improvement of Tribological Properties of Nanolayer a-MoSx/a-C Coatings","authors":"S. N. Grigoriev,&nbsp;D. V. Fominski,&nbsp;V. N. Nevolin,&nbsp;I. V. Suminov,&nbsp;M. D. Gritskevich,&nbsp;V. Yu. Fominski","doi":"10.1134/S2075113326700826","DOIUrl":"10.1134/S2075113326700826","url":null,"abstract":"<p>Multilayered coatings consisting of alternating layers of amorphous molybdenum sulfide (a-MoS_<i>x</i>) and diamond-like carbon (a-C)С are created using a combined method of vacuum and reactive pulsed laser deposition. The ratio of atomic concentrations <i>x</i> = S/Mo in the molybdenum sulfide layers is ~2 and 3, and the thickness of the layers does not exceed 12 nm. The tribological properties of the coatings are studied by sliding a steel ball over a disk under challenging conditions. Modification of coatings after tribological impact is studied using the method of Raman spectroscopy. A significant influence of the chemical composition of molybdenum sulfide layers on the friction coefficient and wear resistance of coatings at room testing temperature is established. An increase in the sulfur concentration provides a prolonged solid-lubricating effect both in humid air (friction coefficient of 0.1–0.2) and in argon (friction coefficient of 0.015) owing to the formation of a tribofilm containing a composition of 2H-MoS₂ and a-C(S) nanophases. When the tribological test temperature in argon is reduced to –100°C, good antifriction characteristics are maintained, but the differences in the properties of the created coatings are less pronounced.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"17 5","pages":"1173 - 1184"},"PeriodicalIF":0.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Materials of Bismuth and Antimony Telluride Solid Solution with Graphene Additives Obtained by Hot Pressing","authors":"L. D. Ivanova,&nbsp;A. G. Malchev,&nbsp;I. Yu. Nikhezina,&nbsp;A. S. Lysenkov,&nbsp;D. S. Nikulin","doi":"10.1134/S207511332670084X","DOIUrl":"10.1134/S207511332670084X","url":null,"abstract":"<p>The thermoelectric properties of samples of the Bi_0.5Sb_1.5Te₃ solid solution with <i>p</i>-type of conductivity obtained by hot pressing of powders prepared by melt spinning with the addition of graphene plates are studied. The microstructure and fractograms of chipped samples are studied using optical and scanning electron microscopy. At room temperature, the following thermoelectric parameters are measured: Seebeck coefficient, specific electrical conductivity, and thermal conductivity. Thermal conductivity is determined in the temperature range from 200 to 500 K; Seebeck coefficient and electrical conductivity are determined in the temperature range from 100 to 300 K. The lattice component of thermal conductivity and the thermoelectric figure of merit <i>ZT</i> are calculated. The influence of various conditions for obtaining hot-pressed samples on their thermoelectric properties is considered. The properties of hot-pressed samples are compared with the properties of materials obtained by spark plasma sintering (SPS).</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"17 5","pages":"1202 - 1207"},"PeriodicalIF":0.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of the Gate Material in MIS Structures on the High-Field Charge Degradation in the Gate Dielectric","authors":"D. V. Andreev,&nbsp;S. A. Kornev,&nbsp;G. G. Bondarenko,&nbsp;V. V. Andreev","doi":"10.1134/S2075113326700905","DOIUrl":"10.1134/S2075113326700905","url":null,"abstract":"<p>Comparative studies are carried out to investigate high-field charge degradation effects in the gate dielectric of metal—insulator—semiconductor (MIS) structures with aluminum and polysilicon gates. Charging phenomena in MIS structures are explored using high-field electron injection into the dielectric under conditions of gradually increasing voltage current density, with periodic short-term switching to a measurement mode at a constant low injection current density. This approach makes it possible to obtain new insights into the charge degradation effects developing inside the gate dielectric of MIS structures made of different gate materials under high-field injection conditions. The results demonstrate that, in MIS structures having a phosphorus-doped polysilicon gate, the formation of a thin phosphorus—silicate glass layer significantly suppresses the rate of charge degradation processes. As a consequence, the average charge injected into the gate dielectric prior to breakdown during high-field voltage testing increases by more than an order of magnitude.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"17 5","pages":"1226 - 1230"},"PeriodicalIF":0.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electron-Beam Synthesis of Complex Titanates","authors":"S. A. Ghyngazov,&nbsp;I. P. Vasil’ev,&nbsp;V. A. Boltueva","doi":"10.1134/S2075113326701182","DOIUrl":"10.1134/S2075113326701182","url":null,"abstract":"<p>Ceramic synthesis is the most important stage of ceramic production. Reducing its energy consumption and time costs is the goal of many studies. As an alternative to traditional solid-phase synthesis, synthesis in a powerful beam of fast electrons is considered. Mixtures of Al₂O₃ + TiO₂ oxides with and without the addition of ZrO₂ were heated in air by electrons with an energy of 1.4–2.5 MeV at a power density of up to 25 kW/cm² and higher at a movement speed of the cuvette with the powder mixture of oxides in the irradiation plane from 0.25 to 1 cm/s. The mixture melted during irradiation and the synthesis of complex titanates in the form of ceramic drops with a porous structure took place. It was found that porosity is regulated by irradiation parameters and cuvette movement speed. The synthesized ceramics have an oxygen deficiency and a characteristic gray-blue color. Annealing in air is accompanied by oxidation of the ceramics and transformation of this color into white. This occurs due to a change in the valence of a small part of Ti included in the ceramics from Ti³⁺ to Ti⁴⁺ as a result of oxidation. The thermal expansion curve shows hysteresis, indicating phase transformations due to oxidation. After thermal annealing in the atmosphere, the hysteresis disappears. Electron beam processing of the Al₂O₃ + TiO₂ mixture with the addition of ZrO₂ led to the synthesis of glass ceramics of a complex composition containing zirconolite. Zirconolite is currently the most promising material for the immobilization of radioactive materials. The main reason for the complication of the glass ceramics composition was the presence of uncontrolled impurities in the original mixture, in particular Ca. The hardness of the ceramics, depending on the porosity and synthesis conditions, can vary from 1.5 to 10.5 GPa.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"17 5","pages":"1450 - 1459"},"PeriodicalIF":0.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Studying the Structure of Samarium-Oxide-Stabilized Zirconium Dioxide with Additions of Calcium and Strontium Oxides Using X-ray Diffraction Methods","authors":"V. P. Sirotinkin,&nbsp;L. I. Podzorova,&nbsp;A. A. Il’icheva,&nbsp;N. A. Mikhailina,&nbsp;O. I. Pen’kova","doi":"10.1134/S2075113326701212","DOIUrl":"10.1134/S2075113326701212","url":null,"abstract":"<p>Using the Rietveld method on X-ray diffraction data, a structural study was carried out on the surfaces of samples sintered at 1050 and 1400°C. The samples consisted of zirconium dioxide stabilized in the tetragonal form with samarium oxide (3 mol %), either without a modifier or with modifiers: calcium oxide (1 mol %) or strontium oxide (1 mol %). The addition of calcium and strontium oxides has a minor effect on the structure of the ceramic samples. Samples sintered at 1050°C contain only the tetragonal form of zirconia. In samples sintered at 1400°C, the cubic form of zirconia is present in addition to the tetragonal form. Microstructural characteristics (coherent scattering domain sizes and microstrains) were determined from the profiles of individual diffraction peaks. The addition of the modifiers does not produce significant changes.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"17 5","pages":"1476 - 1482"},"PeriodicalIF":0.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the Structuring Process of Butadiene–Styrene Rubber in the Presence of Ethylphenylsilylcarbamide and 2-Amino-4,6-bis(trichloromethylsilyl)triazine","authors":"A. F. Mamedova,&nbsp;B. A. Mamedov,&nbsp;O. V. Askerov,&nbsp;S. S. Mashaeva,&nbsp;Sh. M. Mamedov,&nbsp;D. Sh. Mamedov","doi":"10.1134/S2075113326701091","DOIUrl":"10.1134/S2075113326701091","url":null,"abstract":"<p>The role of a new class of active low‑molecular‑weight compounds, ethylphenylsilylcarbamide and 2‑amino‑4,6‑bis(trichloromethylsilyl)triazine, as accelerators of vulcanization of butadiene–styrene rubber was investigated. In the systems butadiene–styrene rubber + 30% ethylphenylsilylcarbamide + ZnO and butadiene–styrene rubber + 30% 2‑amino‑4,6‑bis(trichloromethylsilyl)triazine + ZnO, it was found that the introduction of ethylphenylsilylcarbamide significantly improves the rheological and structural parameters of these systems. First, ethylphenylsilylcarbamide was synthesized; the yield of the final product was 86%. Crosslinking of the butadiene–styrene rubber was carried out in the presence of ethylphenylsilylcarbamide. To protect the compounds from oxidation and from degradation of the polymer chains during mechanical plasticization, the antioxidant 2‑amino‑4,6‑bis(trichloromethylsilyl)triazine was used, and ZnO was used to accelerate the crosslinking of butadiene–styrene rubber. A polymeric plasticizer (a blend of polyvinyl chloride and mineral oil) was used as the plasticizer. Changes in the molecular structure and the three‑dimensional network of the butadiene–styrene rubber in the presence of ethylphenylsilylcarbamide, 2‑amino‑4,6‑bis(trichloromethylsilyl)triazine and zinc oxide were determined by physicochemical and spectroscopic methods. It was found that the degree of crosslinking and the number of active network chains in the elastomer depend on the vulcanization time for each studied system. IR and EPR spectroscopy identified transformations of the butadiene–styrene rubber and confirmed a radical mechanism for the crosslinking reaction. It was shown that the introduction of low‑molecular additives, such as polymeric plasticizers and carbon black, provides improved physicomechanical properties as well as effective protection of elastomeric materials against thermal aging. It was established that plasticization of the elastomer increases with the rise in the content of polar groups (N, NH, Cl, Si) in its composition.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"17 5","pages":"1386 - 1393"},"PeriodicalIF":0.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Amino Derivatives of Modifiers on the Properties of ED-20 Epoxy Composition","authors":"M. I. Shatirova,&nbsp;U. Sh. Jafarova,&nbsp;G. M. Mammadova","doi":"10.1134/S2075113326701029","DOIUrl":"10.1134/S2075113326701029","url":null,"abstract":"<p>Effect of six new modifiers N-(oxiran-2-ylmethyl)-N-(prop-2-ynyl)prop-2-yn-1-amine (I), N-(bicyclo[2.2.1]hept-5-en-2-ylmethyl)-N-(oxiran-2-ylmethyl)-prop-2-yn-1-amine (II), N-(oxiran-2-ylmethyl)-N-((tetrahydro-2H-pyran-3-yl)methyl)prop-2-yn-1-amine (III), N-(2,2-dimethyl-1,3-dioxolan-4-yl)-2-methyl-N-(prop-2-ynyl)prop-2-yn-1-amine (IV), 2-chloro-N-(oxiran-2-ylmethyl)-N-(prop-2-ynyl)prop-2-en-1-amine (V) was studied, 2-chloro-N-(prop-2-ylmethyl)-N-(thiiran-2-yl)-prop-2-en-1-amine (VI) in amounts of 10, 20, and 30 parts by weight on the key physical, mechanical (flexural strength, Vicat heat resistance) and dielectric properties (dielectric constant ε) of resulting thermosetting materials when added them to an epoxy composition based on ED-20 oligomer cured with polyethylenepolyamine was studied. Results showed that the addition of compounds II, IV, and VI significantly increased the strength and heat resistance of the composition (up to 70 MPa and 130°C at 20 parts by weight of additive for compound IV), which is due to the high reactivity of their structural fragments. Compounds I and III, on the other hand, provide a moderate reduction in permittivity (ε ≤ 3.5) compared to other modified compounds and the control sample (ε ≈ 3.6–3.8), which may be useful in developing materials with reduced dielectric loss. A comparative analysis of the modifying effects of various compounds revealed compound IV as the most effective in terms of its overall properties, compound II as a mechanical strength enhancer, and compound VI as a balanced modifier, providing improvements in all studied characteristics. The possibility of targeted control of properties of epoxy compounds by selecting the amine modifier’ structure has been established, that opening up prospects for the development of new functional materials with specified performance parameters.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"17 5","pages":"1338 - 1342"},"PeriodicalIF":0.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and Radical Polymerization of 2-Allyl Oxycarbonyl p-Cyclopropyl Styrene and Its Properties","authors":"K. G. Guliyev,&nbsp;V. A. Vahabova,&nbsp;S. K. Rustamova,&nbsp;A. F. Mamedova","doi":"10.1134/S2075113326701042","DOIUrl":"10.1134/S2075113326701042","url":null,"abstract":"<p>Allyl ether—2-allyl oxycarbonyl <i>p</i>-cyclopropyl styrene was synthesized and subjected to radical homopolymerization. Photosensitivity of synthesized polymer, which contains UV-sensitive allyl and cyclopropane ring fragments in its macromolecule, was studied. Photochemical structuring was studied, and it was established that the synthesized polymer is photosensitivity and can be used to create a photosensitive material. Polymer structure was established using IR and PMR spectroscopy (proton magnetic resonance). Gas-liquid chromatography showed that the synthesized allyl ether purity was approximately 99.3%. Homopolymerization of 2-allyl oxycarbonyl <i>p</i>-cyclopropyl styrene was carried out in the presence of dinitrilazino isobutyric acid. Physicochemical parameters of polymerization product of synthesized 2-allyl oxycarbonyl <i>p</i>‑cyclopropyl styrene were studied, and it was shown that this polymer exhibits high physicomechanical properties. It was found that upon transition from monomer to polymer, the allyl moiety remains virtually unchanged. This fact indicates that radical polymerization occurs through the reaction of the monomer’s vinyl double bond. Under the chosen conditions, the allyl moiety is virtually uninvolved in the polymerization process. As a result of this study, a new cyclopropane-containing monomer was synthesized, and its radical polymerization patterns were studied using it.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"17 5","pages":"1352 - 1356"},"PeriodicalIF":0.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Obtaining of a New Heat-Resistant Epoxy Composition Based on ED-20 Resin","authors":"E. T. Aslanova,&nbsp;M. N. Rashidova,&nbsp;A. A. Garayeva,&nbsp;S. Y. Heydarova,&nbsp;E. G. Iskenderova","doi":"10.1134/S2075113326701005","DOIUrl":"10.1134/S2075113326701005","url":null,"abstract":"<p>Saccharin-6-carboxylic acid triglyceride-1,2,3-tricarboxymethylimide was synthesized to create new heat-resistant epoxy composites based on ED-20 epoxy resin. A reaction of saccharin-6-carboxylic acid triglyceride with monochloroacetic acid was conducted. Composition and structure of synthesized compound were confirmed by elemental analysis and infrared spectroscopy. Resulting product was used as a hardener-plasticizer for the industrial epoxy resin ED-20. To compare the thermal properties of resulting epoxy composite, a composite of ED-20 and PEPA was also prepared. The optimal amount of hardener was determined by thermogravimetry based on mass loss. It was found that resulting compound cures ED-20 epoxy resin under harsh temperature conditions (160–200°C), but when using the UP 606/2 curing accelerator, the curing temperature of composition decreases to 47–100°C. Resulting composition’s cure degree under optimal curing conditions reaches 87%. Differential thermal analysis (DTA) and thermogravimetric analysis (TGA) were used to determine thermal properties, as well as study some of the physical and mechanical properties of epoxy composites. It was demonstrated that the resulting epoxy composites possess high thermal and physicomechanical properties, enabling the synthesized compound to be used as a highly effective hardener-plasticizer for ED-20 epoxy resin.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"17 5","pages":"1325 - 1330"},"PeriodicalIF":0.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the Impurity Composition of Tetrachloride Germanium of Natural Isotopic Composition and Enriched in 72Ge by Gas Chromatograph–Mass Spectrometry","authors":"A. Yu. Sozin,&nbsp;O. Yu. Chernova,&nbsp;T. G. Sorochkina,&nbsp;O. Yu. Troshin,&nbsp;A. Yu. Lashkov,&nbsp;V. A. Koshkin,&nbsp;A. A. Merzlyakova","doi":"10.1134/S2075113326701224","DOIUrl":"10.1134/S2075113326701224","url":null,"abstract":"<p>The impurity composition of germanium tetrachloride of natural isotopic composition and enriched in the ⁷²Ge isotope was investigated by gas chromatograph–mass spectrometry. A DB-5MS chromatographic column (30 m × 0.32 mm × 0.25 μm) with a methylsiloxane stationary phase was used to separate the impurities. Impurity identification was performed by comparing the recorded mass spectra with spectra reported in the literature. The detected impurities include permanent gases, chlorine-containing hydrocarbons (C₁–C₂), silicon tetrafluoride and dimethyldifluorosilane, and methyltrichlorogermane. The detection limits for these impurities are at the level of 3 × 10^–5–2 × 10^–6 vol %. Their concentrations in the germanium tetrachloride samples after synthesis were determined. Mass spectra of ⁷²GeCl₄ and ^natGeCl₃CH₃, unavailable in publications, were obtained and described.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"17 5","pages":"1483 - 1487"},"PeriodicalIF":0.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}