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Defect Structure and Strength Properties of Layered Metal-Intermetallic Composites 层状金属间化合物的缺陷结构和强度特性
IF 0.6 4区 物理与天体物理
Russian Physics Journal Pub Date : 2024-07-08 DOI: 10.1007/s11182-024-03195-0
Ya. D. Lipatnikova, G. A. Mun, Yu. V. Solov’eva
{"title":"Defect Structure and Strength Properties of Layered Metal-Intermetallic Composites","authors":"Ya. D. Lipatnikova, G. A. Mun, Yu. V. Solov’eva","doi":"10.1007/s11182-024-03195-0","DOIUrl":"https://doi.org/10.1007/s11182-024-03195-0","url":null,"abstract":"<p>The results of 3D modeling of the distribution and accumulation of dislocations and low-angle boundaries in the volume of a layered metal-intermetallic composite under uniaxial compression are obtained. The calculations are performed using a synthesis model of dislocation kinetics and mechanics of a deformable solid. The model is preliminarily tested on a single-phase intermetallic compound and pure metal, which shows a good agreement between the calculated values and the earlier obtained experimental results. The patterns of stress distribution, plastic deformation intensity, dislocation density, and low-angle boundaries density in the plane of the central longitudinal section of a deformed rectangular sample of a layered metal-intermetallic composite are presented. The inhomogeneities of internal stresses and strength properties of the selected-configuration layered metal-intermetallic composite under compression are evaluated.</p>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141576849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
White Light Emission from Dy3+-Activated CaY2O4 Phosphor Dy3+ 激活的 CaY2O4 磷光体发出的白光
IF 0.6 4区 物理与天体物理
Russian Physics Journal Pub Date : 2024-07-08 DOI: 10.1007/s11182-024-03209-x
Piya Rani Talukdar, Vikas Dubey, Janita Saji, M. C. Rao
{"title":"White Light Emission from Dy3+-Activated CaY2O4 Phosphor","authors":"Piya Rani Talukdar, Vikas Dubey, Janita Saji, M. C. Rao","doi":"10.1007/s11182-024-03209-x","DOIUrl":"https://doi.org/10.1007/s11182-024-03209-x","url":null,"abstract":"<p>Synthesis and characterization of a Dy<sup>3+</sup>-activated calcium yttrium oxide (CaY<sub>2</sub>O<sub>4</sub>) phosphor are reported. The CaY<sub>2</sub>O<sub>4</sub>:Dy<sup>3+</sup> (1.5 mol%) phosphor is synthesized using a modified solid-state reaction technique for calcination and sintering. The cubic structure is revealed by the X-ray diffraction technique. The morphology and particle size distribution of the prepared phosphor are investigated by the FEGSEM technique. The chemical bonds and functional group analysis are confirmed by the FTIR. A photoluminescence analysis of the CaY<sub>2</sub>O<sub>4</sub>:Dy<sup>3+</sup> phosphor shows dual excitation wavelengths at 285 and 348 nm, especially in the ultraviolet region. At 383 nm, three distinct emission peaks are found at the wavelengths 238, 485, and 571 nm. The spectroscopic parameters are calculated using the CIE chromaticity coordinates. The CIE coordinates of the Dysprosium ion-activated CaY<sub>2</sub>O<sub>4</sub> phosphor (1.5 mol%) show an emission near the white light region of the chromaticity diagram, suggesting that it is suitable for W-LED applications.</p>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141576850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","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 Ultrasonic Impact on the Microhardness and Microstructure of Friction Stir Welded Aluminum Alloy 2024 超声波冲击对摩擦搅拌焊接铝合金 2024 的显微硬度和显微组织的影响
IF 0.6 4区 物理与天体物理
Russian Physics Journal Pub Date : 2024-07-03 DOI: 10.1007/s11182-024-03199-w
A. A. Eliseev, S. V. Fortuna, M. A. Khimich
{"title":"Effect of Ultrasonic Impact on the Microhardness and Microstructure of Friction Stir Welded Aluminum Alloy 2024","authors":"A. A. Eliseev, S. V. Fortuna, M. A. Khimich","doi":"10.1007/s11182-024-03199-w","DOIUrl":"https://doi.org/10.1007/s11182-024-03199-w","url":null,"abstract":"<p>In this paper, the effect of ultrasound on the microhardness and microstructure of friction stir welding joints is investigated. It has been found that the area with minimum microhardness is located in the thermomechanically affected zone on the retreating side. An ultrasonic impact resulted in an increase in the size of this area. The weakening of the region is attributed primarily to the low content of hardening particles due to overaging. It was also found that the ultrasonic impact during welding resulted in a 5 times reduction of residual stresses.</p>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of Near-Earth Space for the Search of Optimal Orbits for Placement of Satellites 分析近地空间以寻找最佳卫星安置轨道
IF 0.6 4区 物理与天体物理
Russian Physics Journal Pub Date : 2024-07-03 DOI: 10.1007/s11182-024-03214-0
A. G. Aleksandrova, I. V. Tomilova, N. A. Kucheryavchenko, N. A. Popandopulo
{"title":"Analysis of Near-Earth Space for the Search of Optimal Orbits for Placement of Satellites","authors":"A. G. Aleksandrova, I. V. Tomilova, N. A. Kucheryavchenko, N. A. Popandopulo","doi":"10.1007/s11182-024-03214-0","DOIUrl":"https://doi.org/10.1007/s11182-024-03214-0","url":null,"abstract":"<p>Orbital evolution of model near-Earth space (NES) objects moving in orbits with semi-major axes in the range from 8 000 to 100 000 km is analyzed to reveal the dynamic structure features of this NES region to choose a disposal strategy for spent spacecrafts or deployment of new satellite systems. The areas possessing the greatest stability and keeping preset orbital elements and hence the most suitable for placing new satellites and disposal of spent satellites are shown. The areas in which the deployment of satellites is inexpedient are highlighted.</p>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","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 Peculiarities of Water-Repelling Surfacing of Cement and Concrete Products 水泥和混凝土产品防水面层的物理和化学特性
IF 0.6 4区 物理与天体物理
Russian Physics Journal Pub Date : 2024-07-03 DOI: 10.1007/s11182-024-03202-4
N. P. Gorlenko, Yu. S. Sarkisov, N. N. Debelova, S. V. Samchenko, I. V. Kozlova, D. G. Alpackiy
{"title":"Physical and Chemical Peculiarities of Water-Repelling Surfacing of Cement and Concrete Products","authors":"N. P. Gorlenko, Yu. S. Sarkisov, N. N. Debelova, S. V. Samchenko, I. V. Kozlova, D. G. Alpackiy","doi":"10.1007/s11182-024-03202-4","DOIUrl":"https://doi.org/10.1007/s11182-024-03202-4","url":null,"abstract":"<p>The physical and chemical characteristics of hydrophobic protection of cement rock and concrete surfaces, using the binders based on polyurethane, elemental sulfur, and nanodimensional fillers of Tarkosil and thermally modified peat, are discussed. It is shown that a combined use of the physical texture-formation methods and an optimal selection of the protective coating chemical composition results in a significant increase of the wetting angle and the solid phase surface energy. It is found out that a directional orientation of the magnetically sensitive particles in the magnetorheological composites in a magnetic field is among the most effective methods for improving the protective coating properties.</p>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intense Orange Red Emission from Sm3+-Activated Ca3Al2O6 Phosphor for Display Device Application 用于显示设备应用的 Sm3+ 激活型 Ca3Al2O6 磷光体发出的强烈橘红色荧光
IF 0.6 4区 物理与天体物理
Russian Physics Journal Pub Date : 2024-07-03 DOI: 10.1007/s11182-024-03207-z
K. Koteswara Rao, M. C. Rao, Vikas Dubey
{"title":"Intense Orange Red Emission from Sm3+-Activated Ca3Al2O6 Phosphor for Display Device Application","authors":"K. Koteswara Rao, M. C. Rao, Vikas Dubey","doi":"10.1007/s11182-024-03207-z","DOIUrl":"https://doi.org/10.1007/s11182-024-03207-z","url":null,"abstract":"<p>The synthesis and the structural and luminescence studies of samarium-doped calcium aluminate phosphors are reported. These phosphors are synthesized by the solid-state reaction method with a variable concentration of doping ions (0.5–3.0 mol%). The synthesized phosphors are characterized by the X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) techniques. The XRD studies show that the doped phosphors have a cubic structure. The SEM images reveal that the Sm<sup>3+</sup>- doped Ca<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> phosphor represents a combination of some rod-like and flower-like structures. The FTIR studies confirm the formation of a Ca<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>:Sm<sup>3+</sup> phosphor. The photoluminescence (PL) emission measurements upon excitation by 273 nm (ultraviolet light) show the characteristic emission peaks of Sm<sup>3+</sup> at 579, 589, 600 and 619 nm. The characteristic orange-red emission is observed for samarium ion. The excitation spectra of the Ca<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>:Sm<sup>3+</sup> phosphor mainly consist of a more intense charge transfer band (CTB) of Sm<sup>3+</sup> located at 273 and 395 nm with some peaks centred at 319 and 362 nm. The CIE coordinates are calculated by the spectrophotometric method using the spectral energy distribution of the Ca<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>:Sm<sup>3+</sup> sample. The prepared phosphors can act as a single host for orange-red light emission in display devices.</p>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structure and Properties of Composite Coatings with Zro2 and Tio2 Particles After Lehceb Treatment 雷西卜处理后含有 Zro2 和 Tio2 粒子的复合涂层的结构和性能
IF 0.6 4区 物理与天体物理
Russian Physics Journal Pub Date : 2024-07-03 DOI: 10.1007/s11182-024-03194-1
M. B. Sedelnikova, A. D. Kashin, P. V. Uvarkin, Y. P. Sharkeev, A. V. Ugodchikova, N. A. Luginin, M. A. Khimich, K. V. Ivanov
{"title":"Structure and Properties of Composite Coatings with Zro2 and Tio2 Particles After Lehceb Treatment","authors":"M. B. Sedelnikova, A. D. Kashin, P. V. Uvarkin, Y. P. Sharkeev, A. V. Ugodchikova, N. A. Luginin, M. A. Khimich, K. V. Ivanov","doi":"10.1007/s11182-024-03194-1","DOIUrl":"https://doi.org/10.1007/s11182-024-03194-1","url":null,"abstract":"<p>The paper presents the comprehensive analysis of the structure, properties, and corrosion of micro-arc coatings with ZrO<sub>2</sub> and TiO<sub>2</sub> particles after the low-energy high-current electron beam (LEHCEB) treatment. The coating morphology, microstructure, phase and elemental compositions are investigated by the scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray powder diffraction. After the LEHCEB treatment, the coating structure with ZrO<sub>2</sub> particles changes from friable and porous to denser with closed spheroidal pores. It is shown that the adhesive strength of the coating with ZrO<sub>2</sub> particles increases with the critical load growth from 10 to 18 N. Moreover, the treatment enhances its corrosion resistance, as evidenced by a reduction in the corrosion current from 7.48∙10<sup>–7</sup> to 1.05∙10<sup>–8</sup> A/cm<sup>2</sup> and an increase in polarization resistance from 0.9·10<sup>4</sup> to 5.77∙10<sup>6</sup> Ω·cm<sup>2</sup>. In contrast, the coatings with TiO<sub>2</sub> particles exhibit a more porous structure due to the volatilization of low-melting components (sodium silicates), as evidenced by a reduction in the concentration of Na and Si elements in their composition. The adhesive strength and corrosion resistance of the coatings with TiO<sub>2</sub> particles deteriorate after the treatment.</p>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","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 Pore Size on the Mechanical Properties and Deformation Behavior of Porous ZrO2(Y2O3) Ceramics Under Axial Compression 孔径对多孔 ZrO2（Y2O3）陶瓷在轴向压缩下的力学性能和变形行为的影响
IF 0.6 4区 物理与天体物理
Russian Physics Journal Pub Date : 2024-07-03 DOI: 10.1007/s11182-024-03193-2
I. N. Sevostyanova, V. V. Gorbatenko
{"title":"Effect of Pore Size on the Mechanical Properties and Deformation Behavior of Porous ZrO2(Y2O3) Ceramics Under Axial Compression","authors":"I. N. Sevostyanova, V. V. Gorbatenko","doi":"10.1007/s11182-024-03193-2","DOIUrl":"https://doi.org/10.1007/s11182-024-03193-2","url":null,"abstract":"<p>In this work, deformation behavior of porous ceramics ZrO<sub>2</sub> – 5.5 wt.% Y<sub>2</sub>O<sub>3</sub> with a different morphology of the pore space under axial quasi-static compression is studied by the method of digital image correlation (DIC). Two stages of the deformation behavior of ceramics have been identified, namely, the controlled accumulation of microcracks and the formation of block structures. It has been found that an increase in the average pore size leads to the decrease of the tensile strength and the effective elasticity modulus and the increase of the ultimate deformation, while the nature of the deformation macrolocalization changes from ordered to chaotic one. It is shown that the rate of accumulation of local deformations in the central part of the deformable sample with a pore size of 68 μm is several times higher than in the sample with a pore size of 29 μm.</p>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Searching For Optimal Areas of Circumlunar Space for Placement of Satellites Moving in Circular Orbits 寻找环月空间的最佳区域以安置在环形轨道上运行的卫星
IF 0.6 4区 物理与天体物理
Russian Physics Journal Pub Date : 2024-07-03 DOI: 10.1007/s11182-024-03215-z
N. A. Popandopulo, A. G. Aleksandrova
{"title":"Searching For Optimal Areas of Circumlunar Space for Placement of Satellites Moving in Circular Orbits","authors":"N. A. Popandopulo, A. G. Aleksandrova","doi":"10.1007/s11182-024-03215-z","DOIUrl":"https://doi.org/10.1007/s11182-024-03215-z","url":null,"abstract":"<p>Orbital evolution of model circumlunar objects moving in circular orbits is analyzed to determine areas optimal for the deployment of new satellite systems moving in orbits of this kind. The areas are determined in which the objects not only remain in their orbits for a long time, but also keep preset initial parameters and hence are the most suitable for the deployment of long-living satellite systems.</p>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical Calculation and Analytic Formulas of Yarkovsky Effect Parameter of Circumsolar Asteroids 环极小行星雅尔科夫斯基效应参数的数值计算和解析公式
IF 0.6 4区 物理与天体物理
Russian Physics Journal Pub Date : 2024-07-03 DOI: 10.1007/s11182-024-03216-y
T. Yu. Galushina, D. L. Bashaev, O. N. Letner, O. M. Syusina
{"title":"Numerical Calculation and Analytic Formulas of Yarkovsky Effect Parameter of Circumsolar Asteroids","authors":"T. Yu. Galushina, D. L. Bashaev, O. N. Letner, O. M. Syusina","doi":"10.1007/s11182-024-03216-y","DOIUrl":"https://doi.org/10.1007/s11182-024-03216-y","url":null,"abstract":"<p>The paper deals with two problems. The main problem is the parameter calculation for the Yarkovsky effect using analytic formulas and their comparison with that obtained through its inclusion in the number of parameters to be detected. Unknown physical parameters of asteroids are varied to obtain the boundary values from analytic formulas. Numerical calculations imply that acceleration driven by the Yarkovsky effect, is inversely proportional to the degree of the heliocentric distance. It is shown that numerical calculations for objects with a well-defined orbit are in good agreement with analytic boundaries. The second problem concerns the numerical calculation of the best degree value for the distance to the Sun. It is demonstrated that the best results are obtained at the degree value of 2.</p>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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