Inorganic Materials: Applied Research最新文献_第10页

Intercalation of Saponite from Solutions of Electrolytes Differing in the Nature of the Cation 不同阳离子性质电解质溶液中皂土的插层

IF 0.3

Inorganic Materials: Applied Research Pub Date : 2025-07-15 DOI: 10.1134/S2075113325700625

V. E. Danilov, A. M. Aizenshtadt, T. A. Drozdyuk, M. A. Frolova, G. A. Garamov

引用次数: 0

Comparative Analysis of the Structure and Properties of Alumina Ceramics Obtained by Conventional Pressureless Sintering and Spark Plasma Sintering 传统无压烧结与放电等离子烧结氧化铝陶瓷的结构与性能比较分析

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Inorganic Materials: Applied Research Pub Date : 2025-07-15 DOI: 10.1134/S2075113325700492

M. S. Boldin, D. A. Tikhonova, A. D. Borkova, S. I. Udachin, E. A. Lantsev, A. V. Voronin, A. A. Murashov, O. A. Belkin, A. V. Nokhrin, V. N. Chuvil’deev

{"title":"Comparative Analysis of the Structure and Properties of Alumina Ceramics Obtained by Conventional Pressureless Sintering and Spark Plasma Sintering","authors":"M. S. Boldin, D. A. Tikhonova, A. D. Borkova, S. I. Udachin, E. A. Lantsev, A. V. Voronin, A. A. Murashov, O. A. Belkin, A. V. Nokhrin, V. N. Chuvil’deev","doi":"10.1134/S2075113325700492","DOIUrl":"10.1134/S2075113325700492","url":null,"abstract":"The effect of the initial size of alumina particles on the density, microstructure, hardness, and fracture toughness of ceramics obtained by conventional and spark plasma sintering (SPS) has been studied. We studied ceramics obtained from commercial Al2O3 powders with an initial particle size of 40 to 50 nm, 0.2 μm, and 1 μm and domestic fine powders with an initial particle size of 0.2 to 3 mm, and Al2O3 + 0.25 vol % MgO and Al2O3 + 10 vol % ZrO2. It is shown that the density of alumina ceramics nonmonotonically depends on the initial size of Al2O3 powder particles. It has been established that an increase in the grain size leads to a nonmonotonic change in the hardness of alumina ceramics. It has been established that the addition of 0.25 vol % MgO accelerates the sintering of alumina. The addition of 10 vol % ZrO2 makes it possible to provide an optimal combination of hardness and fracture toughness. It is shown that fine-grained ceramics obtained by the SPS method have a higher hardness. It has been suggested that SPS of submicron alumina powders with an amorphous layer on the surface, additionally stabilized by zirconia particles, is promising for further increasing the hardness of alumina ceramics.","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"16 3","pages":"649 - 661"},"PeriodicalIF":0.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143498","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}

引用次数: 0

Physical and Chemical Characteristics of the Surface of Powders of Saponite-Containing Material after Its Mechanical Dispersion 含皂矿材料机械分散后粉体表面的物理化学特性

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Inorganic Materials: Applied Research Pub Date : 2025-07-15 DOI: 10.1134/S2075113325700613

A. M. Aizenshtadt, V. V. Strokova, V. V. Nelyubova, M. A. Malygina, M. A. Frolova

引用次数: 0

Gamma-Activation Analysis of Selenium at the Microtron-ST Electron Accelerator Microtron-ST电子加速器上硒的γ活化分析

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Inorganic Materials: Applied Research Pub Date : 2025-07-15 DOI: 10.1134/S2075113325700480

V. I. Tovtin, V. N. Kolokoltsev, N. N. Dogadkin, E. E. Starostin

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Irradiation Modes and Phase Explosion during Ablation of Steel Targets with a Scanning Beam of Pulsed Radiation of a Yb:YAG Laser of Nanosecond Duration 纳秒脉冲Yb:YAG激光扫描束烧蚀钢目标的辐照模式和相位爆炸

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Inorganic Materials: Applied Research Pub Date : 2025-07-15 DOI: 10.1134/S2075113325700443

S. B. Mikhailov, S. G. Gorny, N. V. Zhukov

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Extraction of Platinum from Silicate Melt in a Direct Current Ore-Thermal Furnace 直流矿热炉从硅酸盐熔体中提取铂

IF 0.3

Inorganic Materials: Applied Research Pub Date : 2025-07-15 DOI: 10.1134/S2075113325700777

A. A. Nikolaev, S. M. Muromsky, O. A. Ovchinnikova, T. N. Penkina

{"title":"Extraction of Platinum from Silicate Melt in a Direct Current Ore-Thermal Furnace","authors":"A. A. Nikolaev, S. M. Muromsky, O. A. Ovchinnikova, T. N. Penkina","doi":"10.1134/S2075113325700777","DOIUrl":"10.1134/S2075113325700777","url":null,"abstract":"Pyrometallurgical extraction of platinum from an oxide system based on SiO2, Al2O3, and CaO, which is unclaimed waste of the glass industry with a platinum content of 0.03%, is experimentally studied. Reducing smelting was carried out in a laboratory DC ore-thermal furnace equipped with a 10 dm3 graphite crucible with an axially installed graphite electrode. The crucible had a magnesite lining and was located in a steel casing. A negative potential was applied to the electrode, and a positive potential was applied to the crucible. Melting was carried out at a current of 300 A and a voltage of 100 V. The material was loaded during the melting process as it melted. The temperature of the melt was 1850 K. A charge of 41.6 kg was remelted in 6.5 h with an intermediate drain of melt. Draining was partially carried out by tilting the crucible, leaving the metallic phase at the bottom. The metal phase obtained was 322 g, which was ferrosilicon and contained ≈20% Si and 1.44% Pt. The energy and material balances of melting were considered. The microstructure of the starting material and melting products was investigated. In the starting material, the platinum is contained in the form of inclusions about 10 μm in size, which, when the material is melted, settle to the bottom of the crucible and dissolve in ferrosilicon formed as a result of carbothermic reduction. It is shown that Stokes’ law is applicable to determine the sedimentation rate under electric melting conditions. When ferrosilicon solidifies, the platinum and copper form separate phases in which the platinum content is about 50%.","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"16 3","pages":"872 - 876"},"PeriodicalIF":0.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165266","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}

引用次数: 0

Effect of Creep on the Microstructure of Aluminum Alloy AD1 in Recrystallized and Ultrafine-Grained States 蠕变对AD1铝合金再结晶和超细晶组织的影响

IF 0.3

Inorganic Materials: Applied Research Pub Date : 2025-07-15 DOI: 10.1134/S2075113325700832

S. S. Manokhin, D. A. Kolesnikov, I. V. Nelasov, Yu. R. Kolobov, D. V. Lazarev, V. I. Betekhtin, A. G. Kadomtsev, M. V. Narykova

{"title":"Effect of Creep on the Microstructure of Aluminum Alloy AD1 in Recrystallized and Ultrafine-Grained States","authors":"S. S. Manokhin, D. A. Kolesnikov, I. V. Nelasov, Yu. R. Kolobov, D. V. Lazarev, V. I. Betekhtin, A. G. Kadomtsev, M. V. Narykova","doi":"10.1134/S2075113325700832","DOIUrl":"10.1134/S2075113325700832","url":null,"abstract":"The changes in the microstructure of industrial aluminum alloy AD1 in recrystallized and ultrafine-grained (UFG) states are studied before and after creep tensile tests at 0.3Tmelt (100°C). It is established that, in the recrystallized structure, creep leads to the fragmentation of large elongated grains into smaller grains and subgrains, accompanied by an increase in the fraction of low-angle boundaries. In the UFG structure, grain growth (collecting recrystallization) is observed during the creep. A strong radial texture is identified, where the crystalline lattices of the alloy grains are predominantly oriented along the [001] crystallographic direction parallel to the axis of the original round rod (parallel to the rolling direction). This texture is typical of both recrystallized and ultrafine-grained samples. After creep tests, the UFG samples exhibit a shift in direction of the texture axis from [001] to [011]. This is accompanied by formation of particles of the secondary phase—aluminum carbide and silicon compounds—which is confirmed through CALPHAD phase diagram calculations. The dislocation structure of aluminum alloy AD1 is explored.","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"16 3","pages":"914 - 924"},"PeriodicalIF":0.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165909","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}

引用次数: 0

The Effect of Provoking Heating on the Electrochemical Corrosion Properties of VNS53 and VNS53-M Steels 激发加热对VNS53和VNS53- m钢电化学腐蚀性能的影响

IF 0.3

Inorganic Materials: Applied Research Pub Date : 2025-07-15 DOI: 10.1134/S2075113325700765

O. O. Gavrilenko, D. S. Kushnereva, E. V. Korobeynikova, E. M. Borisova, S. M. Reshetnikov, M. D. Krivilyov

{"title":"The Effect of Provoking Heating on the Electrochemical Corrosion Properties of VNS53 and VNS53-M Steels","authors":"O. O. Gavrilenko, D. S. Kushnereva, E. V. Korobeynikova, E. M. Borisova, S. M. Reshetnikov, M. D. Krivilyov","doi":"10.1134/S2075113325700765","DOIUrl":"10.1134/S2075113325700765","url":null,"abstract":"Numerous directions of modern manufacturing are in need of a new generation of steels. In a number of properties, such steels should surpass those already existing, widely produced, and rather intensively used. One of the most effective ways to improve the functional properties of high-alloy stainless steels is the use of nitrogen as an alloying element. It has been shown in a number of works that nitrogen leads to a decrease in the energy of stacking faults, an expansion of the region of existence of austenite, and a narrowing of the region of existence of delta ferrite. In this regard, we can note such high-strength austenitic steels as 0.08Cr21Mn11NNi6 (VNS53) with anitrogen content of up to 0.5%, as well as 0.08Cr21Mn11NNi6NbV (VNS53-M), additionally containing niobium and vanadium. Taking into account the prospects for expanding the production and use of these steels, this paper presents the results of studying the electrochemical corrosion behavior of high-alloy steels VNS53 and VNS53-M, little studied in this aspect, in comparison with the similar behavior of the widely used steel 08Cr18Ni10Ti steels. The electrochemical corrosion behavior of these steels was carried out by the method of potentiodynamic polarization in an aqueous borate buffer solution at pH 7.4, as well as in the same solution with the addition of sodium sulfate at a concentration of 0.01 mol/L. The studied steels were subjected to sensitization heating at different temperatures. It is shown that, in the tested electrolytes after heat treatment, there is no significant change in the corrosion resistance of these steels. Some decrease in the rate of anodic dissolution is observed for the VNS53-M steel after heat treatment at 600°С. This result is especially important for the VNS53-M steel, which has complex alloying, which can lead to the formation of carbide and nitride phases both in the volume and on the surface of the steel.","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"16 3","pages":"862 - 871"},"PeriodicalIF":0.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165910","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}

引用次数: 0

Laser Heat Treatment of Steels and Alloys before Diffusion Welding 扩散焊前钢和合金的激光热处理

IF 0.3

Inorganic Materials: Applied Research Pub Date : 2025-07-15 DOI: 10.1134/S2075113325700558

Yu. V. Khomich, V. A. Yamshchikov

{"title":"Laser Heat Treatment of Steels and Alloys before Diffusion Welding","authors":"Yu. V. Khomich, V. A. Yamshchikov","doi":"10.1134/S2075113325700558","DOIUrl":"10.1134/S2075113325700558","url":null,"abstract":"The article describes the results of experimental studies on diffusion welding under conditions of hot isostatic pressing with preliminary heat treatment of the surface of workpieces made of a number of steels and alloys by nanosecond pulses of laser ultraviolet radiation. Estimates of the characteristics of laser radiation and the parameters of the modified surface layer due to its melting by a laser pulse are given. It is shown that the processing of samples from a heat-resistant nickel-based alloy CrNi55MoWZr by a scanning beam of nanosecond laser pulses with a wavelength of 355 nm, a duration of 10 ns, and an energy density of 2 J/cm2, following at a frequency of 100 Hz, improved the mechanical properties of the weld. The ultimate strength increased by 10%, and the elongation increased by 20%. In addition, the use of a laser made it possible to reduce the temperature of the diffusion welding process by 160°C while maintaining the mechanical properties of the welded joint. The most probable reason for the improvement of the properties of the welded joint was the appearance of low-temperature superplasticity caused by the formation of a fine-grained surface structure because of preliminary laser processing of workpieces.","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"16 3","pages":"700 - 708"},"PeriodicalIF":0.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166021","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}

引用次数: 0

Study of Radiation Resistance of Polymer Compound with Included Spent Ion-Exchange Resins 含废离子交换树脂聚合物复合材料的耐辐射性能研究

IF 0.3

Inorganic Materials: Applied Research Pub Date : 2025-07-15 DOI: 10.1134/S2075113325700637

E. E. Ostashkina, A. E. Savkin, E. A. Vanina

{"title":"Study of Radiation Resistance of Polymer Compound with Included Spent Ion-Exchange Resins","authors":"E. E. Ostashkina, A. E. Savkin, E. A. Vanina","doi":"10.1134/S2075113325700637","DOIUrl":"10.1134/S2075113325700637","url":null,"abstract":"A technology and installation for conditioning of spent ion-exchange resins by dehydration and inclusion in a polymer binder have been developed. Radiation resistance of the polymer compound obtained has been assessed in accordance with regulatory requirements using developed and certified methods. Mechanical strength (compressive strength) has been adopted as an indicator characterizing the structure of the polymer compound. It has been found that, at a radiation dose of 104 Gy, the strength of the composition under study increases, and this is due to the radiation crosslinking phenomenon, which leads to the formation of additional chemical bonds and strengthening of the matrix. The volume of polymer compound samples when irradiated with doses of 104–106 Gy decreases, which guarantees the integrity of containers used for its storage/burial. The rate of radionuclide leaching from polymer compound samples during irradiation also decreases and is within the requirements of NP-019-15. The compliance of the polymer compound with the normative requirements of radiation resistance in terms of invariability of its structure and water resistance is shown.","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"16 3","pages":"761 - 766"},"PeriodicalIF":0.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166022","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}

引用次数: 0