Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques最新文献

The Speed of Sound in Nanopowder Created by High-Energy Electron Beam

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2024-12-18 DOI: 10.1134/S1027451024700939

B. Z. Garmaev, S. M. Bronnikova, I. A. Yuzhakov, K. V. Zobov, S. P. Bardakhanov, A. V. Nomoev

{"title":"The Speed of Sound in Nanopowder Created by High-Energy Electron Beam","authors":"B. Z. Garmaev, S. M. Bronnikova, I. A. Yuzhakov, K. V. Zobov, S. P. Bardakhanov, A. V. Nomoev","doi":"10.1134/S1027451024700939","DOIUrl":"10.1134/S1027451024700939","url":null,"abstract":"The work is devoted to a technique for measuring the speed of sound when passing through a thick layer of “poured” nanopowder in an immersed state. A simple experimental setup is proposed consisting of two speakers and one microphone immersed in a container with a nanosized powder. The setup does not require calibration. Two indirect methods for determining speed in the nanopowder using two speakers and a microphone located at different distances from the speakers are shown. Experimental measurements are carried out in a silicon dioxide nanopowder with an average particle size of about 50 nm. It has been established that the speed of sound in this medium is less than that in gas and solid matter and is equal to 35 m/s. It has been shown that the speed of sound does not depend on the frequency of sound for frequencies up to 1600 Hz. A new hypothesis has been proposed that the nanopowder behaves like a new type of continuous medium, “heavy gas,” when a sound wave passes through it. The hypothesis allows one to apply formulas for determining the speed of sound in gas for this case. Based on experimental data, the adiabatic constant for the “heavy gas” is estimated. The proposed application of the effective medium approximation, such as the Hertz–Mindlin contact theory, to estimate the speed of sound in nanopowder shows that the nanoparticles are not in close contact with each other. This can be explained by the inapplicability of this theory to the case of “poured” nanopowder due to the packing of nanoparticles that differs from the theory.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 5","pages":"1128 - 1134"},"PeriodicalIF":0.5,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844965","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}

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Formation of Ultrasmooth Highly Orientated ZnO Films on Amorphous Surface (SiO2/Si) by Magnetron Sputtering

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2024-12-18 DOI: 10.1134/S1027451024700976

A. M. Ismailov, T. A. Guidalaeva, A. E. Muslimov, Yu. V. Grigoriev, V. M. Kanevsky

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Increasing the Service Life of Main Pipelines Using a Composite Waterproofing Material with Increased Durability 使用耐久性更强的复合防水材料延长主干管道的使用寿命

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2024-12-18 DOI: 10.1134/S1027451024701167

K. A. Demin, M. A. Mokeev, S. D. Dondukov, E. V. Shakirova, A. N. Khagleev

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Synthesis of Hydride Phases Based on TiZrNbMoTa High-Entropy Alloy

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2024-12-18 DOI: 10.1134/S102745102470085X

S. A. Lushnikov, T. V. Filippova

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Influence of Vacuum Ultraviolet Radiation on Changes in Fourier-Transform Infrared Absorption Spectra and Electrical and Hydrophobic Properties of a Composite Based on Polyimide Track Membranes Filled with Silica 真空紫外线辐射对基于填充了二氧化硅的聚酰亚胺轨道膜的复合材料的傅立叶变换红外吸收光谱变化以及电气和疏水性能的影响

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2024-12-18 DOI: 10.1134/S1027451024700782

N. I. Cherkashina, V. I. Pavlenko, A. Y. Ruchii, S. N. Domarev, E. V. Forova

{"title":"Influence of Vacuum Ultraviolet Radiation on Changes in Fourier-Transform Infrared Absorption Spectra and Electrical and Hydrophobic Properties of a Composite Based on Polyimide Track Membranes Filled with Silica","authors":"N. I. Cherkashina, V. I. Pavlenko, A. Y. Ruchii, S. N. Domarev, E. V. Forova","doi":"10.1134/S1027451024700782","DOIUrl":"10.1134/S1027451024700782","url":null,"abstract":"Vacuum ultraviolet radiation is a part of ultraviolet radiation with a very short wavelength and is a component of cosmic radiation. Composite materials based on polyimide have great potential for protection against cosmic radiation. The paper presents the results of studies on the effect of vacuum ultraviolet radiation on a polyimide film, a polyimide track membrane, and a composite material based on the polyimide track membrane filled with silica nanofibers. Mass losses, dielectric properties, Fourier-transform infrared spectra, and wettability of the studied samples before and after vacuum ultraviolet irradiation were studied. It was found that the lowest mass losses during vacuum ultraviolet irradiation were observed in the composite material based on the polyimide track membrane filled with SiO2; the dielectric constant of the composite film after vacuum ultraviolet irradiation increased by 65.8%. It was established that the effect of vacuum ultraviolet radiation on the films under study was accompanied by destruction of a small number of the following bonds: C=O, C–O, C–C, and C–N. At the same time, vacuum ultraviolet radiation caused the least damage to the developed composite material. Contact angle analysis of the studied samples showed that the surface of the polyimide film, polyimide track membrane, and composite material remained hydrophilic after irradiation. No changes were detected in the structure of the film surface.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 5","pages":"1033 - 1040"},"PeriodicalIF":0.5,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844937","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}

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Synthesis of Gallium(II) Sulfide 硫化镓（II）的合成

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2024-12-18 DOI: 10.1134/S1027451024700794

D. N. Borisenko

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Microstructure and Deformation Behavior of Novel Metal–Ceramic Laminated Composites Ta/Ti3Al(Si)C2–TiC 新型金属陶瓷层压复合材料 Ta/Ti3Al(Si)C2-TiC 的微观结构和变形行为

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2024-12-18 DOI: 10.1134/S1027451024700897

A. V. Abdulmenova, E. B. Kashkarov, D. G. Krotkevich, N. Travitzky

{"title":"Microstructure and Deformation Behavior of Novel Metal–Ceramic Laminated Composites Ta/Ti3Al(Si)C2–TiC","authors":"A. V. Abdulmenova, E. B. Kashkarov, D. G. Krotkevich, N. Travitzky","doi":"10.1134/S1027451024700897","DOIUrl":"10.1134/S1027451024700897","url":null,"abstract":"New metal–ceramic laminated composites Ta/Ti3Al(Si)C2–TiC were obtained by spark plasma sintering. The samples were synthesized at a temperature of 1250°C and a pressure of 50 MPa for 5 min. For formation of the composites, preceramic paper with a powder filler based on the MAX phase of Ti3Al(Si)C2, as well as metal foils made of tantalum, were used. The phase composition, microstructure, and elemental composition were analyzed by X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray spectroscopy, respectively. It was found that as a result of sintering, dense multilayer composites were formed, consisting of tantalum metal layers, ceramic layers containing Ti3Al(Si)C2, TiC, and Al2O3 phases, as well as reaction layers ~13 μm thick at the metal–ceramic interface enriched with Ta, Al, and Si. Based on the mechanical test data, the ultimate bending strength of the obtained composites was determined (σbs = ~430 MPa). Metal–ceramic laminated composites with a refractory tantalum layer were shown to exhibit a ductile fracture mechanism accompanied by a more than fourfold increase in absolute deformation compared to a Ti3Al(Si)C2-based ceramic composite. This is achieved due to deflection, branching of cracks at the metal–ceramic interface, and plastic deformation of tantalum layers.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 5","pages":"1105 - 1110"},"PeriodicalIF":0.5,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844968","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}

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Influence of Mechanical Damage to an Interferometer Block on Its X-Ray Diffraction Pattern 干涉仪块的机械损伤对其 X 射线衍射图样的影响

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2024-12-18 DOI: 10.1134/S1027451024701155

H. R. Drmeyan, S. B. Dabagov, H. G. Margaryan, S. A. Mkhiraryan

{"title":"Influence of Mechanical Damage to an Interferometer Block on Its X-Ray Diffraction Pattern","authors":"H. R. Drmeyan, S. B. Dabagov, H. G. Margaryan, S. A. Mkhiraryan","doi":"10.1134/S1027451024701155","DOIUrl":"10.1134/S1027451024701155","url":null,"abstract":"This study examines the impact of mechanical damage to an X-ray interferometer block on its observed X-ray diffraction pattern. The origin of contrast resulting from imperfections in the crystal structure of the interferometer block, which arises from mechanical damage, is interpreted. Both theoretical and experimental evidence demonstrates that the curvature of interference fringes in the Moiré topogram is a result of scratches on the surface of the crystal block of the X-ray interferometer. The study determines the relationship between the period of the Moiré fringes, dislocation density, and their displacement. The average dislocation density near the center of the scratch is calculated. The study shows that the period of the Moiré pattern is inversely proportional to the dislocation density. Experimental evidence demonstrates that changes in the Moiré pattern also occur in the presence of dislocations in the crystal, which form as a result of a scratch on the surface of the crystal block of the X-ray interferometer. The geometric parameters of the scratch on the surface of the interferometer’s crystal block are determined. The depth of the scratch and the extent of the dislocation group aligned along the scratch are calculated.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 5","pages":"1281 - 1287"},"PeriodicalIF":0.5,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844837","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}

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Kinetic Study of the Crystallization of Free and Contact Surfaces of Fe77Ni1Si9B13 Amorphous-Alloy Ribbons under Low-Temperature Annealing 低温退火条件下 Fe77Ni1Si9B13 非晶合金带自由表面和接触表面结晶的动力学研究

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2024-12-18 DOI: 10.1134/S102745102470109X

M. S. Konovalov, V. I. Lad’yanov, M. I. Mokrushina, A. A. Suslov, A. I. Shilyaev, S. A. Tereshkina, V. B. Ivanov

{"title":"Kinetic Study of the Crystallization of Free and Contact Surfaces of Fe77Ni1Si9B13 Amorphous-Alloy Ribbons under Low-Temperature Annealing","authors":"M. S. Konovalov, V. I. Lad’yanov, M. I. Mokrushina, A. A. Suslov, A. I. Shilyaev, S. A. Tereshkina, V. B. Ivanov","doi":"10.1134/S102745102470109X","DOIUrl":"10.1134/S102745102470109X","url":null,"abstract":"This study examines the differences in the crystallization kinetics of the free and contact sides of an Fe77Ni1Si9B13 amorphous-alloy ribbon at 400°C. X-ray phase analysis reveals that crystals based on α-Fe form on the contact side after just 5 min of annealing. In contrast, on the free side, reflections corresponding to α-Fe crystals are only detectable after 30 min of annealing. The relative content of the crystalline phase is determined using X-ray diffraction data, based on the relationship between the integral intensity of the reflection of the analyzed phase and its volume fraction. We explore the possible reasons for the observed differences in crystallization. Crystallization in the surface layers of both the contact and free sides of the ribbon occurs in two stages: the isotropic growth of existing nuclei with a decreasing rate of crystal formation, followed by the slowed anisotropic growth of already formed crystals. The first stage is satisfactorily described by the Johnson–Mehl–Avrami–Kolmogorov (JMAK) thermodynamic formalism, whereas applying a kinetic equation to describe the second stage is not appropriate.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 5","pages":"1249 - 1254"},"PeriodicalIF":0.5,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844874","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}

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Structural, Optical, and Magnetic Characteristics of Iron-Garnet Films after Ion Etching 离子蚀刻后铁榴石薄膜的结构、光学和磁学特性

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2024-12-18 DOI: 10.1134/S1027451024701003

S. V. Tomilin, A. A. Syrov, T. V. Mikhailova, S. D. Lyashko, A. N. Shaposhnikov, A. G. Shumilov, E. Yu. Semuk, A. A. Fedorenko, V. N. Berzhansky, O. A. Tomilina

{"title":"Structural, Optical, and Magnetic Characteristics of Iron-Garnet Films after Ion Etching","authors":"S. V. Tomilin, A. A. Syrov, T. V. Mikhailova, S. D. Lyashko, A. N. Shaposhnikov, A. G. Shumilov, E. Yu. Semuk, A. A. Fedorenko, V. N. Berzhansky, O. A. Tomilina","doi":"10.1134/S1027451024701003","DOIUrl":"10.1134/S1027451024701003","url":null,"abstract":"The experimental results of a study of the influence of ion etching of single-crystal films of cation-substituted iron-garnets on their structural, magnetic, optical, and magneto-optical properties are presented. It is shown that the ion etching of single-crystal garnets significantly reduces the surface roughness. Analysis of the domain structure, ferromagnetic resonance spectra, and magneto-optical hysteresis in the epitaxial film of bismuth-substituted iron-garnet during layer-by-layer ion etching shows the presence of three different layers, the state of which changes relative to the compensation point and the interfaces of the layers correspond to the transition through the compensation point. It is shown that the position of the layer interfaces can be varied by changing the temperature of the sample. A study of optical and magneto-optical characteristics shows that in single-crystal (epitaxial) films of iron-garnets, ion etching does not worsen optical transmission and does not destroy the garnet structure down to a thickness of tens of nanometers (the Faraday effect is preserved).","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 5","pages":"1179 - 1192"},"PeriodicalIF":0.5,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844990","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}

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