Ya. N. Savina, S. V. Ovchinnikov, R. R. Valiev, K. S. Selivanov
{"title":"Microstructure and Properties of Protective Ion-Plasma Coating on UFG Ti Alloy","authors":"Ya. N. Savina, S. V. Ovchinnikov, R. R. Valiev, K. S. Selivanov","doi":"10.1134/S1027451024701969","DOIUrl":"10.1134/S1027451024701969","url":null,"abstract":"<p>The paper presents results of comprehensive studies on a fine structure of TiVN ion-plasma protective coating deposited on a Ti–6Al–4V substrate with an ultrafine-grained (UFG) structure. This coating considerably improves the performance properties of critical products operating under high loads in aggressive environments. In the article special attention is paid to features of formation of coating layers and their phase composition with account of effect caused the substrate ultrafine-grained structure. It is established that TiVN functional coating has a layered structure with thin layers of dark and light colors, which can be formed at different ratios of Ti and V concentrations due to planetary rotation of substrates. The structure of a TiVN functional layer is columnar and has an average diameter of about 17 nm. Based on microdiffraction patterns of a TiVN layer, it is found that the reflexes correspond to an fcc structure, which does not have a dominant textural component of growth. This might be conditioned by high level of ion activation of growth and multicomponent nature of the coating being terms for creation and retention of high density of defects. This fine structure of ion-plasma coating on a substrate with UFG structure provides the achievement of high adhesion and erosion resistance.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 1 supplement","pages":"S127 - S135"},"PeriodicalIF":0.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638544","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}
N. S. Ulakhanov, U. L. Mishigdorzhiyn, M. S. Vorobyov, A. P. Semenov, K. A. Demin, P. V. Moskvin, A. G. Tikhonov, A. E. Balanovskiy
{"title":"EBSD Characterization and Mechanical Properties of Boroaluminized Diffusion Layers on Surface of L6 Steel after Pulsed Electron Beam Processing","authors":"N. S. Ulakhanov, U. L. Mishigdorzhiyn, M. S. Vorobyov, A. P. Semenov, K. A. Demin, P. V. Moskvin, A. G. Tikhonov, A. E. Balanovskiy","doi":"10.1134/S1027451024701994","DOIUrl":"10.1134/S1027451024701994","url":null,"abstract":"<p>The process of modifying of boron- and aluminum diffusion layers properties on the surface of 5KhNM die steel by pulsed electron beam processing using an electron source with a plasma cathode based on a low-pressure arc discharge is considered. It was shown, using optical microscopy and electron backscatter diffraction methods, that the increase in the mechanical properties (microhardness and wear resistance) of the boroaluminized layer after electron beam processing is associated with a grain refinement and a phase redistribution, during which a concentration of the solid phase Fe<sub>2</sub>B occurs on the surface of the layer. It was found that the maximum microhardness on the surface of 5KhNM steel increases from 800 to 1400 HV and wear resistance improves by two times after electron beam processing.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 1 supplement","pages":"S154 - S160"},"PeriodicalIF":0.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638390","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}
A. V. Sobachkin, V. Yu. Filimonov, M. V. Loginova, A. A. Sitnikov, V. I. Yakovlev, A. Z. Negodyaev, A. Yu. Myasnikov, A. A. Roznyj
{"title":"Thermal Modes of Synthesis in Mechanoactivated Powder Mixture Ti + Al","authors":"A. V. Sobachkin, V. Yu. Filimonov, M. V. Loginova, A. A. Sitnikov, V. I. Yakovlev, A. Z. Negodyaev, A. Yu. Myasnikov, A. A. Roznyj","doi":"10.1134/S1027451024701982","DOIUrl":"10.1134/S1027451024701982","url":null,"abstract":"<p>In the presented work, a study of thermal synthesis regimes in mechanically activated powder mixture of Ti + Al was carried out. The possibility of the reaction realization in a low-temperature mode (up to 700°C) in a relatively short time (about 30 min) has been established. In this case, the composition of the synthesis products is identical to the composition of the synthesis products carried out in the traditional thermal explosion mode at a maximum temperature of 1300°C. The possibility of a relatively fast reaction in a low-temperature regime is determined by solid-phase diffusion under favorable condition due to the large surface area of contact of the reagents and a low energy diffusion barrier.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 1 supplement","pages":"S146 - S153"},"PeriodicalIF":0.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638487","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}
T. S. Argunova, V. G. Kohn, J.-H. Lim, V. M. Krymov, A. V. Ankudinov
{"title":"Study of the Surface Morphology and Inclusions of Heavy Metals in Basal-Faceted Sapphire Ribbons Using In-Line X-Ray Phase-Contrast Imaging","authors":"T. S. Argunova, V. G. Kohn, J.-H. Lim, V. M. Krymov, A. V. Ankudinov","doi":"10.1134/S1027451024701817","DOIUrl":"10.1134/S1027451024701817","url":null,"abstract":"<p>This study presents the results of research concerning microsteps on the surface and the inclusions of heavy metals in the volume of sapphire ribbons grown using Stepanov’s method. Basal-faceted sapphire ribbons exhibit a low density of steps, which are caused by small changes in the orientation of the growth surface or the thickness of the ribbon. Phase contrast imaging using synchrotron radiation is employed to study the defects. It is shown for the first time that the height of a step of 1 µm can be determined directly from the image. An analytical solution for the intensity distribution of the step in the case of fully coherent X-ray radiation is obtained. When the phase shift is small, there is a direct proportionality between contrast and step height, and the inverse problem is easily solved. The height obtained using the phase-contrast-imaging method is confirmed by measurements using atomic force microscopy. To analyze microinclusions, a computer simulation program is used, which allows for assessment of their sizes. We find that the experimental contrast matches the theoretical calculations only if the calculated intensity profile is convolved with a Gaussian function. The full width at half maximum of the Gaussian is independently obtained from preliminary measurements.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 1 supplement","pages":"S16 - S23"},"PeriodicalIF":0.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638542","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}
V. V. Privezentsev, A. A. Firsov, V. S. Kulikauskas, M. I. Voronova, D. A. Kiselev, B. R. Senatulin
{"title":"Study of Zinc Implanted Crystalline Quartz","authors":"V. V. Privezentsev, A. A. Firsov, V. S. Kulikauskas, M. I. Voronova, D. A. Kiselev, B. R. Senatulin","doi":"10.1134/S1027451024702045","DOIUrl":"10.1134/S1027451024702045","url":null,"abstract":"<p>The results of a study of crystalline quartz implanted by <sup>64</sup>Zn<sup>+</sup> ions with a dose of 5 × 10<sup>16</sup>/cm<sup>2</sup> and an energy of 40 keV are presented. The samples were annealed in air in steps of 100°C for 1 h at each step in the temperature range of 400−700°C. The methods used for the study were atomic force microscopy, X-ray diffraction phase analysis, X-ray photoelectron spectroscopy, and Auger electron spectroscopy. It was found that after implantation, the phases of metallic zinc Zn and carbon C were fixed in the near-surface layer. After annealing at 700°C, the zinc oxide phase ZnO appears, and after annealing above 700°C, the zinc silicide phase Zn<sub>2</sub>SiO<sub>4</sub> appears. It was found that after annealing at 400°C the roughness increases by 2 orders of magnitude compared to the state after implantation, and after annealing at 700°C, the roughness of the quartz surface decreases by an order of magnitude compared to annealing at 400°C. After annealing at 700°C, numerous Zn-containing nanoparticles and craters are fixed on the surface and a zinc silicide phase is formed.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 1 supplement","pages":"S186 - S192"},"PeriodicalIF":0.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638546","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}
A. S. Goltaev, K. N. Novikova, L. N. Dvoretskaya, V. V. Fedorov, A. K. Kaveev, A. M. Mozharov
{"title":"Study of Resonant Light Absorption in Hexagonally Ordered InAs NWs","authors":"A. S. Goltaev, K. N. Novikova, L. N. Dvoretskaya, V. V. Fedorov, A. K. Kaveev, A. M. Mozharov","doi":"10.1134/S1027451024702033","DOIUrl":"10.1134/S1027451024702033","url":null,"abstract":"<p>Indium arsenide (InAs) nanowires (NWs) have recently attracted the attention of researchers as promising structures for creating nanoelectronic and photonic devices. To improve the efficiency of devices based on them, it is necessary to take into account their geometric features, which, in particular, affects the processes of light absorption. In this work, we numerically simulated light capture by an array of InAs nanowires depending on its geometric parameters using the Comsol Multiphysics software package. Ordered arrays of InAs NWs on a Si substrate were synthesized by molecular beam epitaxy in combination with microsphere lithography. Optical reflectance spectra of epitaxial InAs NW arrays on the silicon substrate were obtained for the range of 0.5–2.5 μm. In the case of hexagonally ordered NW arrays, the spectrum exhibits resonant behavior, which is consistent with the results of numerical calculations.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 1 supplement","pages":"S180 - S185"},"PeriodicalIF":0.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638386","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}
A. S. Narikovich, I. I. Lyatun, I. B. Panormov, A. L. Astafiev, A. A. Barannikov, D. A. Zverev, A. A. Snigirev
{"title":"Study of the Influence of Aluminum Microstructure on the Optical Properties of Refractive Lenses","authors":"A. S. Narikovich, I. I. Lyatun, I. B. Panormov, A. L. Astafiev, A. A. Barannikov, D. A. Zverev, A. A. Snigirev","doi":"10.1134/S1027451024701830","DOIUrl":"10.1134/S1027451024701830","url":null,"abstract":"<p>This study analyzes the microstructure of X-ray refractive lenses made from high-purity aluminum, both on surface and bulk material properties. Optical microscopy was used to examine the detailed morphology of the lenses’ refractive surfaces. X-ray radiography demonstrated Bragg diffraction effects caused by the crystalline structure of aluminum grains, resulting in additional losses in the radiation intensity transmitted through the lenses.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 1 supplement","pages":"S34 - S37"},"PeriodicalIF":0.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638530","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}
U. Sharopov, K. Samiev, M. Kurbanov, M. Karimov, D. Saidov, F. Akbarova, Z. Iskandarov, S. Islamov, A. Komolov, S. Pshenichnyuk
{"title":"Tuning Surface Charge and Defects in Zinc Oxide Crystals Via Low-Energy Electron Irradiation","authors":"U. Sharopov, K. Samiev, M. Kurbanov, M. Karimov, D. Saidov, F. Akbarova, Z. Iskandarov, S. Islamov, A. Komolov, S. Pshenichnyuk","doi":"10.1134/S1027451024702227","DOIUrl":"10.1134/S1027451024702227","url":null,"abstract":"<p>This work describes research on how zinc oxide (ZnO) crystals behave when bombarded with low-energy electrons (up to 600 eV). The key finding is that the energy of the electrons strongly affects what happens on the surface of the ZnO. We have identified specific electron energies that cause negative charge to build up on the surface, remove existing charge, and create gaps where oxygen atoms used to be. It was determined that depending on the energy of electrons, it is possible to tune the surface charge, which can be used for technological purposes. This knowledge could be crucial for developing new methods of creating thin films and two-dimensional structures made from ZnO, by controlling the charge of the surface.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 1 supplement","pages":"S311 - S320"},"PeriodicalIF":0.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638155","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}
A. S. Milonov, S. A. Lysykh, Yu. I. Semenov, M. Yu. Kosachev, U. L. Mishigdorzhiyn
{"title":"Protective Coatings based on VB2 on the Surface of D2 die Steel Formed by an Electron Beam in a Vacuum","authors":"A. S. Milonov, S. A. Lysykh, Yu. I. Semenov, M. Yu. Kosachev, U. L. Mishigdorzhiyn","doi":"10.1134/S1027451024701957","DOIUrl":"10.1134/S1027451024701957","url":null,"abstract":"<p>The paper presents the results of surface hardening of samples made of D2 die steel by complex alloying with preliminary application of a saturating mixture to the surface of the sample, followed by exposure to an electron beam. The morphology and structure of surface layers after electron beam treatment have been studied. Microhardness, elemental and phase compositions, as well as wear resistance in terms of mass loss depending on time were determined. Complex alloying of boron-containing components together with electron beam processing leads to the production of layers with improved physical and mechanical characteristics. The structure of the surface layer, its hardness, structural and phase composition are subject to change. It was found that the alloyed sample has wear resistance from 2.4 to 3.8 times higher than the sample in the original state.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 1 supplement","pages":"S122 - S126"},"PeriodicalIF":0.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638543","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}
A. D. Lomygin, D. G. Krotkevich, R. S. Laptev, Zh. Wang, A. A. Sidorin, O. S. Orlov
{"title":"Effect of Annealing on the Defect Structure, Desorption Properties, and Structural-Phase State in Nanoscale Multilayer Zr/Nb Structures after Hydrogenation","authors":"A. D. Lomygin, D. G. Krotkevich, R. S. Laptev, Zh. Wang, A. A. Sidorin, O. S. Orlov","doi":"10.1134/S1027451024702136","DOIUrl":"10.1134/S1027451024702136","url":null,"abstract":"<p>The effect of annealing after hydrogenation on the defect structure, desorption properties, and structural-phase state of nanoscale multilayer Zr/Nb systems has been studied. Nanoscale multilayer structures based on Zr/Nb were fabricated using a magnetron sputtering system with an individual layer thickness of 50 nm. To analyze changes in the defect structure, one of the techniques of positron annihilation spectroscopy was used, Doppler broadening spectroscopy with a positron beam of variable energy for layer-by-layer positron implantation in Zr/Nb. The depth distribution of elements before and after hydrogenation was studied using glow discharge optical emission spectrometry. Analysis of changes in the structural-phase state was carried out using X-ray diffraction analysis. Thermal desorption spectroscopy was used to study the desorption of hydrogen from Zr/Nb, and the activation energy of hydrogen release was calculated by constructing Arrhenius plots. The forms of the Arrhenius plots differ from their usual form, which is associated with a nontypical distribution of hydrogen in Zr/Nb.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"18 1 supplement","pages":"S245 - S252"},"PeriodicalIF":0.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638101","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}