Inorganic Materials最新文献

{"title":"Effect of High-Temperature Annealing in Oxygen on the Properties of Hafnium Oxide Films Grown by Atomic Layer Deposition","authors":"S. V. Bulyarskiy,&nbsp;K. I. Litvinova,&nbsp;A. A. Shibalova","doi":"10.1134/S0020168524700821","DOIUrl":"10.1134/S0020168524700821","url":null,"abstract":"<p>We have studied the effect of pulse annealing on the crystallization of hafnium oxide films grown by atomic layer deposition and constructed a model for the crystallization process. Experimental data and simulation results suggest that the crystallization mechanism is rather complex and depends on temperature. At annealing temperatures in the range 600–700°C, the crystallization process follows a diffusion mechanism: oxygen diffuses into the film and interacts with oxygen vacancies and excess hafnium, resulting in nanocrystal growth. At higher temperatures, the activation energy for the crystallization process increases and exceeds the activation energy for oxygen diffusion. We assume that the crystallization process can involve double ionized oxygen vacancies.</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 5","pages":"612 - 619"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fields of Residual Stresses near Filled Assemblage Holes of the Aircraft Wing Panel","authors":"S. I. Eleonskii,&nbsp;M. D. Zaitsev,&nbsp;Yu. G. Matvienko,&nbsp;V. S. Pisarev","doi":"10.1134/S0020168524700626","DOIUrl":"10.1134/S0020168524700626","url":null,"abstract":"<p>Fatigue resistance tests were performed on two geometrically identical and structurally similar models of the lower wing panel of a commercial aircraft. The panels differed in the method of installation of the mounting bolts joining the skin and the stringer. In the first panel, cold hardening of the holes was performed before installation of the skin and stringer. In the second panel, no additional processing of the holes was performed after drilling and reaming. The bolts were installed with an interference fit within the range of 1.3 to 2.1% for the first panel and 2.9 to 3.2% for the second panel. Variations in the values of the interference fit are due to the presence of tolerance fields for the diameters of both the bolts and the mounting holes. A comparison of these technologies was based on a study of residual stress fields. An analysis was performed of the residual stress component values in the vicinity of the mounting holes in the skin, which were filled with interference-fit bolts. The residual stress components were determined using the hole drilling method and the successive crack length increase (SCLI) method. The deformation response was measured using electron speckle interferometry. The first (discrete) method based on drilling a probing hole makes it possible to quantitatively determine the components of residual stresses starting from a distance of 1.1 mm from the contour of the mounting hole. The second (continuous) method consists of successively increasing the length of an artificial notch. A new version of the SCLI method ensuring determination of the parameters of fracture mechanics for notches propagating in the contact interaction zone has been developed. It consists in making an initial through hole in the middle of the distance between the studied mounting holes, from the contour of which a sequence of artificial notches begins. The end point of this sequence is the outer contour of the bolt. This approach ensures analysis of the residual stress fields arising in two bolt installation technologies by comparing the values of stress intensity factors (SIF). Both experimental approaches reveal the advantages of joining with bolts installed in a hardened hole. The high efficiency and reliability of the methods for determining residual stresses using optical interference measurements of the strain response to local material removal has been substantiated and clearly demonstrated. These methods are based on obtaining high-quality interferograms, which provide resolution of interference fringes of maximum density directly on the contour of the probing hole or on the banks of an artificial notch.</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 4","pages":"560 - 574"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Barothermal Analysis and Processing, Plastic Deformation, Microstructure, and Properties of Al–Zn Binary Alloys","authors":"M. S. Pyrov,&nbsp;R. D. Karelin,&nbsp;O. S. Antonova,&nbsp;A. G. Padalko,&nbsp;V. S. Yusupov","doi":"10.1134/S0020168524700869","DOIUrl":"10.1134/S0020168524700869","url":null,"abstract":"<p>Al–4 wt % Zn and Al–9 wt % Zn binary alloys have been characterized by differential scanning calorimetry (DSC) at atmospheric pressure and differential barothermal analysis (DBA) at ~100 MPa near their melting point. The solidus temperature evaluated from the DSC data for the alloys has been shown to slightly exceed that in the equilibrium Al–Zn phase diagram, which is accounted for by nonequilibrium experimental conditions. The solidus temperatures of the Al–4Zn and Al–9Zn alloys evaluated from DBA heating curves obtained at 100 MPa exceeded those in the equilibrium Al–Zn phase diagram by 18 and 16°C, respectively, and their liquidus temperatures were 25 and 11°C higher than the phase diagram values. Barothermal processing (BTP) at a temperature of ~0.8<i>t</i>_s in a 100 MPa/460°C/3 h cycle caused partial decomposition of the solid solution of Zn in Al in the alloys, leading to the formation of Zn particles in an aluminum matrix. The number density of Zn particles in the Al–9Zn alloy was 76% higher. We propose a thermodynamic model for the external pressure-driven decomposition of the Al〈Zn〉 solid solution and demonstrate that the Zn particles in the aluminum matrix have a mainly exponential size distribution, with equivalent particle diameters in the range 0.11–0.3 μm. Zinc in the as-cast Al–4Zn alloy has been shown to be completely dissolved, whereas the number density of zinc particles in the as-cast Al–9Zn alloy was 3.0 × 10¹¹ cm^–3. After BTP, the number density of precipitates resulting from the partial decomposition of the Al〈Zn〉 solid solution reaches 2.5 × 10¹¹ and 4.4 × 10¹¹ cm^–3 in the Al–4Zn and Al–9Zn alloys, respectively. We have measured the microhardness of the alloys in different states. The highest values, 383 ± 7 and 607 ± 28 MPa, were obtained for the cold-deformed Al–4Zn and Al–9Zn, respectively. The yield stress, ultimate strength, and relative elongation of the Al–4Zn alloy after BTP and cold deformation were determined to be 106.5 MPa, 122.8 MPa, and 14.8%, and those of the Al–9Zn alloy were 174.9 MPa, 183 MPa, and 13.2%, respectively, with the possibility of improving these properties by artificial aging. The results of this study demonstrate the feasibility of controlling the microstructure and properties of zinc-containing aluminum-based alloys by BTP (hot isostatic pressing).</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 5","pages":"596 - 605"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heat-Resistant Properties of High-Temperature SiCN Ceramic Fibers for Application in Metal-Matrix Composite Materials","authors":"K. A. Knyazev,&nbsp;P. A. Storozhenko,&nbsp;A. N. Timofeev,&nbsp;S. V. Zhukova,&nbsp;M. A. Venkov","doi":"10.1134/S0020168524700742","DOIUrl":"10.1134/S0020168524700742","url":null,"abstract":"<p>Silicon carbonitride (SiCN) fibers are high-temperature ceramic materials capable of operating at temperatures above 1000°C. In this paper, we report our results on heat-resistant properties of SiCN ceramic fibers in an oxidizing atmosphere and under vacuum.</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 5","pages":"636 - 645"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research of Sediments in Assessing the Causes of Corrosion at Gas Facilities","authors":"R. K. Vagapov,&nbsp;O. G. Mikhalkina","doi":"10.1134/S0020168524700687","DOIUrl":"10.1134/S0020168524700687","url":null,"abstract":"<p>Various methods of corrosion monitoring are used to control the aggressiveness of operating conditions of oil and gas facilities and ensure their safe and reliable operation. One of them is the analysis of resulting corrosion products and other sediments and precipitates to obtain data on their composition. The article presents the results of a study of sediments in determining the mechanisms and causes of the origin of the corrosion processes with the subsequent development of measures to eliminate the factors of their evolution. The composition of sediments being formed at gas complex facilities is studied. Inorganic compounds and elemental composition are analyzed using X-ray diffraction and scanning electron microscopy. It is revealed that the sediments contain elemental sulfur, indicating the presence of dangerous sulfur-containing compounds (for example, H₂S) in the system. Using IR spectroscopy and gas chromatography–mass spectrometry, the organic components of the sediments being formed during the preparation of a corrosion inhibitor solution in methanol are determined. It is shown that the reason for their formation is the presence of petroleum hydrocarbons in the solution. When analyzing the sediments formed inside the water transport pipe, it is found that they include iron oxides and hydroxides. At the same time, in places of a through defect on the outer surface of the pipe, corrosion products consisting of Fe(II) or Fe(III) hydroxides with layers of anions and water molecules are formed—the so-called “green rust.” Such sediments being unstable under operating conditions are not capable of providing protection of the steel surface from corrosion. The results obtained can be used for corrosion monitoring at gas facilities to identify corrosion factors affecting the formation of sediments and precipitates.</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 4","pages":"437 - 443"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Growth of Calcium Phosphate Layers on TiO2–SiO2–P2O5/CaO and TiO2–SiO2–P2O5/La2O3 Bioactive Composites","authors":"V. A. Tkachuk,&nbsp;E. S. Lyutova,&nbsp;L. P. Borilo,&nbsp;L. N. Spivakova,&nbsp;A. A. Buzaev","doi":"10.1134/S0020168524700778","DOIUrl":"10.1134/S0020168524700778","url":null,"abstract":"<p>We have studied the properties of a divinylbenzene-matrix carboxylic ion exchanger with respect to calcium and lanthanum(III) ions. Tokem-250 cation exchanger-based TiO₂–SiO₂–P₂O₅/CaO and TiO₂–SiO₂–P₂O₅/La₂O₃ composites have been prepared by a sol–gel process, and we have identified the key features of the phase formation process involved and the physicochemical properties of the synthesized materials. The results demonstrate that a calcium phosphate layer can be formed on the surface of the TiO₂–SiO₂–P₂O₅/CaO and TiO₂–SiO₂–P₂O₅/La₂O₃ materials in simulated body fluid.</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 5","pages":"606 - 611"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Buffer Gases on the Energy Spectrum of Laser Plume Particles during Laser Ablation of a SiMn Binary Target","authors":"L. S. Parshina,&nbsp;D. S. Gusev,&nbsp;O. D. Khramova,&nbsp;O. A. Novodvorsky,&nbsp;F. N. Putilin","doi":"10.1134/S0020168524700845","DOIUrl":"10.1134/S0020168524700845","url":null,"abstract":"<p>We have studied the effect of He, Xe, Ar, and N₂ buffer gas pressure on the energy spectrum of particles in the plasma plume during ablation of a SiMn binary target by nanometer laser pulses. Time-of-flight Langmuir probe measurements have been used to find velocity distribution functions of charged plume particles in relation to the type and pressure (10^–6 to 4 × 10^–1 Torr) of the gas. We examined possible mechanisms of the nonmonotonic effect of gas pressure on the probe signal amplitude and delay. Argon and nitrogen as buffer gases have been shown to have little effect on the energy of particles in a wide pressure range. Varying the argon pressure from 10^–5 to 8 × 10^–2 Torr changes the peak signal arrival delay by 20%, which allows the properties of the films we prepared to be varied gradually. The ferromagnetic resonance signal amplitude of Mn_<i>x</i>Si_1–<i>x</i> (<i>x</i> ~ 0.5) films has been shown to depend on argon pressure.</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 5","pages":"691 - 701"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Sintering Conditions and Pore Former Content in the Starting Mixture on Characteristics of Porous Titanium Prepared from TiH2 Powder","authors":"A. B. Ankudinov,&nbsp;V. A. Zelensky,&nbsp;N. P. Cherezov,&nbsp;V. S. Erasov,&nbsp;V. S. Shustov,&nbsp;I. V. Saikov,&nbsp;M. I. Alymov","doi":"10.1134/S0020168524700808","DOIUrl":"10.1134/S0020168524700808","url":null,"abstract":"<p>Highly porous titanium, with porosity above 59%, has been prepared by a powder metallurgy method, using ammonium bicarbonate (NH₄HCO₃) as a pore former. We have studied the influence of the pore former content (0, 10, 20, 30, and 60 vol %) in the starting mixture and the sintering temperature and medium on the porosity and strength of porous titanium. The porosity of the material has been shown to rise with increasing pore former content. Moreover, samples sintered in vacuum and argon differ in porosity. The strength of the porous samples has been shown to decrease with increasing pore former content and depend on the sintering medium and temperature. The strength of the vacuum-sintered samples is usually higher, occasionally reaching 1449 MPa. The sintering temperature has little effect on compressive strength characteristics of the porous samples.</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 5","pages":"588 - 595"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conditions of Cobalt(II) Ferrite Preparation on the Surface of Biochar","authors":"N. P. Shabel’skaya,&nbsp;A. M. Radzhabov,&nbsp;M. A. Egorova,&nbsp;A. V. Arzumanova,&nbsp;V. A. Ul’yanova","doi":"10.1134/S0020168524700985","DOIUrl":"10.1134/S0020168524700985","url":null,"abstract":"<p>We report a detailed study of the influence of the amount of ammonia and citric acid added as precursors and the nature of a biochar support on the formation of cobalt(II) ferrite-based composite materials in sol–gel synthesis. The materials thus prepared have been characterized by X-ray diffraction and electron microscopy, and we evaluated the crystallite size in them by the Scherrer method. We have optimized the amounts of the precursors and demonstrated that the morphology of the composite materials is determined by the shape of the biochar support particles. The results of this study can be helpful in developing a process for the fabrication of organic–inorganic composite materials with structure-sensitive properties.</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 6","pages":"794 - 800"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structure of X-Ray Photoelectron Spectra of Magnetite","authors":"K. I. Maslakov,&nbsp;Yu. A. Teterin,&nbsp;A. V. Safonov,&nbsp;V. G. Yarzhemsky,&nbsp;A. Yu. Teterin,&nbsp;G. D. Artem’ev,&nbsp;I. I. Zin’kovskaya","doi":"10.1134/S0020168524701000","DOIUrl":"10.1134/S0020168524701000","url":null,"abstract":"<p>We have studied the complex structure of valence-band and core-level X-ray photoelectron spectroscopy (XPS) spectra of a geological magnetite sample (Fe₃O₄, Sverdlovsk oblast, Russia) containing Fe²⁺ and Fe³⁺ ions and impurities (Mg, Al, Si, Ti, and others). The results demonstrate that the XPS spectra of magnetite reflect a superposition of spectra of Fe²⁺ (3<i>d</i>⁶) and Fe³⁺ (3<i>d</i>⁵) ions in their high-spin states. We have evaluated the Fe 3<i>p</i>, Fe 3<i>s</i>, and Fe 2<i>p</i> binding energies in the different Fe ions. The measured Fe 3<i>s</i> spectrum of magnetite consists of two doublets with a splitting of 5.2 eV for Fe²⁺ and 6.5 eV for Fe³⁺. These values agree with results of theoretical calculations for Fe atoms by the final state configurational interaction method: 4.0 eV for Fe²⁺ (3<i>d</i>⁶) and 6.8 eV for Fe³⁺ (3<i>d</i>⁵).</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 6","pages":"745 - 754"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}