Russian Physics Journal最新文献_第4页

The influence of the initial phase state of aluminum oxide on the melting process in a high-power beam of fast electrons 高功率快电子束中氧化铝初始相态对熔化过程的影响

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-07-22 DOI: 10.1007/s11182-025-03507-y

S. A. Ghyngazov, I. P. Vasil’ev, V. A. Boltueva, V. A. Vlasov, A. A. Kondratyuk

{"title":"The influence of the initial phase state of aluminum oxide on the melting process in a high-power beam of fast electrons","authors":"S. A. Ghyngazov, I. P. Vasil’ev, V. A. Boltueva, V. A. Vlasov, A. A. Kondratyuk","doi":"10.1007/s11182-025-03507-y","DOIUrl":"10.1007/s11182-025-03507-y","url":null,"abstract":"<div>The issues of accelerating the synthesis of oxide compounds are solved by improving certain stages of the ceramic manufacturing process. A new method is advanced, involving a short-term heating of the reaction agents to the melting temperature, which is aimed at manufacturing ceramic materials that are difficult or even impossible to be produced by other processes. In view of this circumstance, it is critical to optimize the initial states of the oxides of the reaction mixture to ensure their most effective melting under the electron-beam treatment. Using an aluminum oxide as an example, it is shown how important it is to control its initial phase state. It is demonstrated that in the cases where aluminum oxide consists of a few phases, specifically monoclinic and corundum, then during the electron-beam treatment the electron energy is primarily spent on a monoclinic-to-corundum phase transition. Only following this, the aluminum oxide powder undergoes melting. This makes the electron beam treatment less effective.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 6","pages":"890 - 894"},"PeriodicalIF":0.4,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011532","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

Up-conversion luminescence properties and temperature sensing characteristics of Tm3+, Yb3+ co-doped SrBi4Ti4O15 phosphors with high thermometric sensitivity Tm3+， Yb3+共掺SrBi4Ti4O15荧光粉的上转换发光特性和温度传感特性

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-07-22 DOI: 10.1007/s11182-025-03510-3

S. Y. Liu, D. Gao, Y. Zhu, X. Chen, L. Wang, W. B. Song, H. Yin, S. Gao, J. Tan, J. J. Zhang

{"title":"Up-conversion luminescence properties and temperature sensing characteristics of Tm3+, Yb3+ co-doped SrBi4Ti4O15 phosphors with high thermometric sensitivity","authors":"S. Y. Liu, D. Gao, Y. Zhu, X. Chen, L. Wang, W. B. Song, H. Yin, S. Gao, J. Tan, J. J. Zhang","doi":"10.1007/s11182-025-03510-3","DOIUrl":"10.1007/s11182-025-03510-3","url":null,"abstract":"<div>In this work, Tm3+- and Yb3+-doped SrBi4Ti4O15 phosphor was successfully synthesized through the high-temperature solid-state reaction. The phosphor composition was characterized by X‑ray diffraction, revealing a reduction in the lattice parameters and volume due to a successful substitution of Sr3+ by Tm3+ and Yb3+. Under the excitation of a 980 nm diode laser, weak green emission centered at 476 nm and strong red emission centered at 696 and 801 nm were observed, which originated from Tm3+ 1G4→3H6, 1G4→3F4, 3F2,3→3H5 and 3H4→3H6 transitions. The best doping concentration for Tm3+ and Yb3+ was 1 and 20 mol%, respectively. Extensive studies were conducted on the Tm3+/Yb3+ co-doping effect on the pump power. The absolute sensitivity of non-thermal coupling levels for doped Tm3+/Yb3+ calculated at different wavelengths, was 0.4504 and 0.0359 K−1, respectively. These results indicated that SrBi4Ti4O15:Tm3+/Yb3+ is an effective candidate for red up-conversion luminescent materials and can be used as a high-efficiency temperature sensing material.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 6","pages":"921 - 932"},"PeriodicalIF":0.4,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011523","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

Determination of mass attenuation coefficients of γ-ray in bone tissue equivalent material 骨组织等效材料中γ射线质量衰减系数的测定

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-07-22 DOI: 10.1007/s11182-025-03504-1

Mohsin Hasan Ali, Mushtaq Abed Al-Jubbori

引用次数: 0

Effect of machine hammer peening on the structural phase state and mechanical properties of Ti–6Al–4V in layer-by-layer electron beam additive manufacturing 电子束逐层增材制造中机锤强化对Ti-6Al-4V组织相态和力学性能的影响

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-07-17 DOI: 10.1007/s11182-025-03500-5

N. N. Shamarin, A. V. Filippov, N. V. Semenchuk, V. M. Semenchuk, A. O. Panfilov, S. Yu. Tarasov, A. V. Chumaevskii

{"title":"Effect of machine hammer peening on the structural phase state and mechanical properties of Ti–6Al–4V in layer-by-layer electron beam additive manufacturing","authors":"N. N. Shamarin, A. V. Filippov, N. V. Semenchuk, V. M. Semenchuk, A. O. Panfilov, S. Yu. Tarasov, A. V. Chumaevskii","doi":"10.1007/s11182-025-03500-5","DOIUrl":"10.1007/s11182-025-03500-5","url":null,"abstract":"<div>Electron beam 3D printing is a method of modern high-performance additive manufacturing of titanium alloy products. There are well-known problems with the formation of equiaxed primary grains suitable for providing the required level of mechanical characteristics that call for searching technological approaches to improve the quality of printing products used in critical industries. Machine Hammer Peening (MHP) has proven itself as the most effective method of interlayer material work hardening in additive manufacturing. The article examines the possibility of controlling the structural-phase state and mechanical properties of Ti–6Al–4V titanium alloy by using the interlayer machine hammer peening with different intertreatment intervals. The data obtained during experimental studies indicate that the greatest improvement in strength and microhardness is provided by machine hammer peening after depositing each 4 layers. Machine hammer peening contributes to the formation of a more uniform structure, the columnar prior grain refinement, elimination of columnar grains, and a decrease in the thickness of the α‑lath width. The results of the research confirm the effectiveness of using machine hammer peening in layer-by-layer electron beam additive manufacturing of the Ti–6Al–4V alloy for improving mechanical properties.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 6","pages":"838 - 848"},"PeriodicalIF":0.4,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011877","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

Spectral analysis of brass plasma generated by a Nd:YAQ laser at λ = 1064 nm λ = 1064 nm处Nd:YAQ激光器产生黄铜等离子体的光谱分析

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-07-17 DOI: 10.1007/s11182-025-03509-w

Mohammed H. Jawad, Mohammed R. Abdulameer

{"title":"Spectral analysis of brass plasma generated by a Nd:YAQ laser at λ = 1064 nm","authors":"Mohammed H. Jawad, Mohammed R. Abdulameer","doi":"10.1007/s11182-025-03509-w","DOIUrl":"10.1007/s11182-025-03509-w","url":null,"abstract":"<div>The present study focuses on the mechanism by which the Nd: YAG laser energy affects the properties of plasma produced from locally manufactured copper and zinc alloys at the ratio of 80 to 20%. Five different laser energies (500–900 mJ) are used to study the apparent effects on the plasma at every energy value. The fundamental wavelength of the laser directed perpendicular to the alloy surface (target) is 1064 nm. Through the results obtained on the electron temperature and its density, it is shown that there is a clear and gradual increase in both of them with the increasing laser energy in addition to an increase in the intensity of spectral emissions at high energies. The electron temperature is calculated by the Boltzmann method, while the Stark expansion method is used to calculate the electron density. To deepen the understanding of the plasma behavior, the additional basic parameters are calculated, which include the plasma frequency (fp), the Debye length (λD), and the number of charged particles in the Debye sphere (ND). The results show a clear increase in the plasma frequency and Debye length at high energies. On the other hand, there is a clear decrease in the Debye length when the laser energy increases. This study provides a deeper insight into the mechanisms of laser interaction with different materials, especially copper and zinc alloys, as it opens the way to improving many applications such as laser cutting and engraving using lasers, as well as spectral analysis of materials in the industrial field, in addition to many environmental and technological applications.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 6","pages":"903 - 911"},"PeriodicalIF":0.4,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011876","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

Investigating the mechanical and microstructural analysis of AA7075/SiC/SiO2 hybrid composite fabricated through microwave sintering techniques 研究了微波烧结技术制备的AA7075/SiC/SiO2杂化复合材料的力学和显微组织分析

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-07-17 DOI: 10.1007/s11182-025-03501-4

Dheeraj Rodda, Sangigholu Kurumurthy, K. Venkateswara Reddy, U. Sudhakar, Mrudula Gudla, S. Sarveswara Reddy, Prakash Putta, Durga Venkatesh Janaki, Chinthakunta Siva Reddy

{"title":"Investigating the mechanical and microstructural analysis of AA7075/SiC/SiO2 hybrid composite fabricated through microwave sintering techniques","authors":"Dheeraj Rodda, Sangigholu Kurumurthy, K. Venkateswara Reddy, U. Sudhakar, Mrudula Gudla, S. Sarveswara Reddy, Prakash Putta, Durga Venkatesh Janaki, Chinthakunta Siva Reddy","doi":"10.1007/s11182-025-03501-4","DOIUrl":"10.1007/s11182-025-03501-4","url":null,"abstract":"<div>In the present study, AA7075-based metal matrix composites were fabricated using the powder metallurgy technique followed by microwave sintering to investigate the influence of ceramic reinforcements on mechanical properties. Silicon carbide (SiC) was used as a single reinforcement in varying weight percentages (0–9 wt.%), and further enhancement was studied using a hybrid combination of SiC (fixed at 7 wt.%) and silicon dioxide (SiO2) in varying amounts (0–5 wt.%). The mechanical behavior was characterized through compression strength and hardness measurements. Among the single-reinforced composites, the highest compression strength of 221 MPa and hardness of 97 Hv were achieved at 7 wt.% SiC. In the case of hybrid reinforcement, the composite containing 7 wt.% SiC + 3 wt.% SiO2 exhibited the maximum compression strength of 302 MPa and hardness of 112 Hv, demonstrating a significant enhancement over the base alloy and the single-reinforced systems. These findings reveal that microwave sintering, combined with optimal hybrid reinforcement, is highly effective in improving the mechanical performance of aluminum matrix composites, making them suitable for advanced structural and aerospace applications.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 6","pages":"849 - 856"},"PeriodicalIF":0.4,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011878","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

Simulation of lateral distribution of resistivity and charge carrier lifetime in chromium-compensated gallium arsenide wafers 铬补偿砷化镓晶圆中电阻率和载流子寿命横向分布的模拟

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-07-09 DOI: 10.1007/s11182-025-03487-z

A. E. Vinnik, A. N. Zarubin, P. V. Kosmachev, A. D. Lozinskaya, I. D. Chsherbakov, Y. S. Petrova, M. S. Skakunov, O. P. Tolbanov, A. V Tyazhev, L. K. Shaimerdenova, A. V. Shemeryankina

引用次数: 0

Modeling the effective permeability of a material composed of MWCNTs encapsulated by transition metal particles 模拟由过渡金属颗粒封装的MWCNTs组成的材料的有效渗透率

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-07-09 DOI: 10.1007/s11182-025-03491-3

E. Yu. Korovin, A. S. Kachalov, A. A. Pavlova, E. B. Atutov, D. A. Mazilov, V. I. Suslayev

引用次数: 0

Peculiarities of the structure of low stable states of water and aqueous solutions 低稳定状态的水和水溶液的结构特性

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-07-09 DOI: 10.1007/s11182-025-03489-x

A. I. Potekaev, V. V. Obukhov

{"title":"Peculiarities of the structure of low stable states of water and aqueous solutions","authors":"A. I. Potekaev, V. V. Obukhov","doi":"10.1007/s11182-025-03489-x","DOIUrl":"10.1007/s11182-025-03489-x","url":null,"abstract":"<div>The physical concept of structural and phase states of water and aqueous solutions low-stable to external impacts is presented. The concept allows one to understand physics of various effects observed in water and super-highly diluted aqueous solutions. In particular, the approach allows one to estimate the effect of mechanical action (stirring) on these solutions in Epstein’s effect. An analysis of thermodynamic and phase low-stable states of a physical system allows the adequate mechanism of system transition to a new structure-phase state to be proposed under a weak external impact. In this case, in spite of the fact that the external impact is weak, it can lead to considerable structure phase changes of the system state, since the structural units in the initial and final states, though close thermodynamically, can differ significantly in symmetry. Physical reasons for weak reproducibility of the results of investigations of the characteristics of water and aqueous solution structure at ultra-high dilution are discussed together with the importance of the small external effect for the transition to a new structure-phase state.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 5","pages":"740 - 748"},"PeriodicalIF":0.4,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990478","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

Magnetic field effect on cadmium oxide plasma properties detected by laser spectroscopy 磁场对激光光谱检测氧化镉等离子体特性的影响

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-07-09 DOI: 10.1007/s11182-025-03497-x

Zahraa T. Turki, Mohanad. Q. Fahem, Zainab Abdulla Mankhi, Mohammed H. Jawad

{"title":"Magnetic field effect on cadmium oxide plasma properties detected by laser spectroscopy","authors":"Zahraa T. Turki, Mohanad. Q. Fahem, Zainab Abdulla Mankhi, Mohammed H. Jawad","doi":"10.1007/s11182-025-03497-x","DOIUrl":"10.1007/s11182-025-03497-x","url":null,"abstract":"<div>Concerning the existence and non-existence of the magnetic field, the laser-induced breakdown spectroscopy of cadmium oxide plasma is investigated in the current study. Accordingly, an Nd:YAG laser (1064 nm, 9 ns), in addition to the pulse laser intensity varying from 300 to 600 mJ, is employed to produce the plasma in a vacuum environment at the operating pressure ranging between 0.5 and 2 Torr. Any increase in the laser energy leads to a gradual increase in the electron density and temperature. It is well-known that the electron density and temperature increase when a magnetic field is added to cadmium oxide plasma. Thus, the magnetic field impact is approved with the existence of beta values less than 1 in the plasma parameter. The study highlights how adjusting the laser intensity and operating pressure can directly affect the plasma properties, providing a deeper understanding of the matter interaction under different conditions. This knowledge can be used to improve spectroscopy techniques and develop new applications in scientific research and industry, as understanding of relationships between pressure, energy, and magnetic fields opens up vast possibilities for the plasma property control with greater precision.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 5","pages":"804 - 812"},"PeriodicalIF":0.4,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990488","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