Russian Physics Journal最新文献

Application of meander lines for improving microcontroller reliability under influence of repeating UWB interference pulses 弯曲线在重复超宽带干扰脉冲影响下提高单片机可靠性的应用

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-09-03 DOI: 10.1007/s11182-025-03526-9

S. H. Karri, Y. S. Zhechev, R. S. Surovtsev, K. P. Malygin, A. A. Kokolov

引用次数: 0

A diffraction reflector influence on the radiation characteristics of multiwave Cherenkov generator in the G-band 衍射反射镜对多波切伦科夫发生器g波段辐射特性的影响

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-09-03 DOI: 10.1007/s11182-025-03525-w

V. A. Chazov, V. I. Koshelev, A. A. Petkun

引用次数: 0

Exploring the mechanical response of aluminum composites reinforced with SiN and ZrO2: a novel hybrid microwave sintering approach 一种新型复合微波烧结方法研究sinzro2增强铝复合材料的力学响应

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-08-28 DOI: 10.1007/s11182-025-03531-y

Korvi Pullaiah, A. Hemantha Kumar

{"title":"Exploring the mechanical response of aluminum composites reinforced with SiN and ZrO2: a novel hybrid microwave sintering approach","authors":"Korvi Pullaiah, A. Hemantha Kumar","doi":"10.1007/s11182-025-03531-y","DOIUrl":"10.1007/s11182-025-03531-y","url":null,"abstract":"<div><p>The present study investigates the mechanical behavior of AA7075-based hybrid metal matrix composites reinforced with silicon nitride (SiN) and zirconium dioxide (ZrO<sub>2</sub>), fabricated by a novel hybrid microwave sintering technique. Composites are developed with the constant SiN content of 7 wt.% and the ZrO<sub>2</sub> content varying between 1 and 4 wt.% to understand the influence of dual-phase ceramic reinforcement. The microstructural analysis shows a uniform dispersion of reinforcement at a lower ZrO<sub>2</sub> content, contributing to the improved tensile strength and hardness through such mechanisms as the load transfer, Orowan looping, and grain refinement. The composite reinforced with 7 wt.% SiN and 3 wt.% ZrO<sub>2</sub> demonstrates the best mechanical performance, achieving a 202 MPa tensile strength and 116 HV hardness. However, the impact strength decreases with increasing ZrO<sub>2</sub> content, reaching the maximum of only 10.25 J at 1 wt.% and dropping to 9.72 J at 4 wt.%. The X‑ray diffraction analysis confirms the formation of the brittle Al<sub>4</sub>C<sub>3</sub> phase at 4 wt.% ZrO<sub>2</sub>, which, despite the presence of thermally stable Al<sub>3</sub>Zr, contributes to a decline in mechanical properties. Furthermore, microstructural defects such as agglomeration and pore formation at higher ZrO<sub>2</sub> contents act as crack initiation sites. This study confirms that hybrid microwave sintering, when optimized with suitable reinforcement levels, is a promising technique for fabricating lightweight, high-strength aluminum composites for advanced engineering applications.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 7","pages":"1065 - 1071"},"PeriodicalIF":0.4,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196167","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

Study of thermodynamic parameters and flame characteristics during wildfire using IR thermography 利用红外热像仪研究野火的热力学参数和火焰特性

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-08-28 DOI: 10.1007/s11182-025-03529-6

M. V. Agafontsev, E. L. Loboda, D. P. Kasymov, A. V. Lutsenko, P. S. Martynov, A. A. Staroseltseva, V. V. Reyno, Yu. A. Loboda

引用次数: 0

Effects of the urban heat islands during an abnormally warm winter in Tomsk 托木斯克异常暖冬期间城市热岛的影响

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-08-28 DOI: 10.1007/s11182-025-03527-8

N. N. Cheredko, A. E. Tel’minov, S. P. Mamasueva

引用次数: 0

An analysis of meteorological conditions and concentrations of atmospheric impurities in the city of Ufa 乌法市气象条件和大气杂质浓度分析

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-08-25 DOI: 10.1007/s11182-025-03528-7

D. Y. Vasil’ev, A. N. Yelizariev, D. S. Kucherova, G. N. Semenova, V. A. Semenov

{"title":"An analysis of meteorological conditions and concentrations of atmospheric impurities in the city of Ufa","authors":"D. Y. Vasil’ev, A. N. Yelizariev, D. S. Kucherova, G. N. Semenova, V. A. Semenov","doi":"10.1007/s11182-025-03528-7","DOIUrl":"10.1007/s11182-025-03528-7","url":null,"abstract":"<div><p>Based on instrumental measurements of the Roshydromet Network, an analysis of meteorological conditions and atmospheric air pollution levels was performed for the city of Ufa. The analyzed characteristics included concentrations of suspended solids, sulfur dioxide, carbon monoxide, nitrogen dioxide, and hydrogen sulfide at 9 stationary stations from 2017 to 2021. A comparison of data from the Roshydromet Observation Network and the Center of Hygiene and Epidemiology (CHE) of the Republic of Bashkortostan was performed. When analyzing the quality of atmospheric air along with the maximum permissible concentration (MPC), the associated air pollution index (API) was used. It was established that the level of air pollution for 2017–2021 in the city of Ufa was elevated and was mainly determined by high concentrations of nitrogen dioxide and suspended solids. Meteorological conditions in recent years also contributed to the increase of the pollutant concentration in the atmosphere of the city: when the number of days with precipitation decreased, the frequency of air stagnation and elevated temperature inversions increased.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 7","pages":"1005 - 1009"},"PeriodicalIF":0.4,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196249","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

Temporal, spectral, and energy characteristics of acoustic pulses from laser breakdown on a solid aerosol particle 固体气溶胶粒子上激光击穿声脉冲的时间、光谱和能量特性

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-08-21 DOI: 10.1007/s11182-025-03521-0

A. I. Potekaev, N. P. Krasnenko, L. G. Shamanaeva

引用次数: 0

Structure formation, friction and wear of composite materials based on aluminum-manganese bronze and nickel-based superalloys 铝锰青铜和镍基高温合金复合材料的组织形成、摩擦磨损

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-08-21 DOI: 10.1007/s11182-025-03532-x

A. V. Chumaevskii, A. R. Dobrovolskii, A. P. Zykova, K. S. Osipovich, V. R. Utyaganova, A. O. Panfilov, A. V. Vorontsov, A. V. Filippov, A. V. Nikolaeva, A. V. Gusarova, S. Yu. Nikonov, E. O. Knjazhev, E. A. Kolubaev

{"title":"Structure formation, friction and wear of composite materials based on aluminum-manganese bronze and nickel-based superalloys","authors":"A. V. Chumaevskii, A. R. Dobrovolskii, A. P. Zykova, K. S. Osipovich, V. R. Utyaganova, A. O. Panfilov, A. V. Vorontsov, A. V. Filippov, A. V. Nikolaeva, A. V. Gusarova, S. Yu. Nikonov, E. O. Knjazhev, E. A. Kolubaev","doi":"10.1007/s11182-025-03532-x","DOIUrl":"10.1007/s11182-025-03532-x","url":null,"abstract":"<div><p>The paper investigates the structure formation, friction and wear of composites based on aluminum-manganese bronze CuAl9Mn2 and Udimet 500 nickel base superalloy obtained by wire-feed electron-beam additive manufacturing (EBAM). It is shown that wire-feed EBAM-produced specimens have rather a homogeneous structure based on the copper solid solution, NiAl and Cu<sub>9</sub>Al<sub>4</sub> intermetallic phases, M<sub>23</sub>C<sub>6</sub> carbides and structured particles comprising a mixture of carbides and intermetallides with the shell structure. The higher content of the Udimet500 superalloy added to the copper matrix leads to an increase in strength properties and a decrease in ductility. The lowest friction wear is observed for specimens containing 10–15 vol.% of the nickel alloy, while the lowest friction coefficient is observed for specimens containing 5 vol.% of the nickel alloy. The main mechanisms of the friction wear are adhesive and normal corrosive wear. In addition, the phenomenon of coarse particle precipitation of strengthening phases was observed at dry friction of composites consisting of the high content of the nickel alloy. It is found that at dry friction, the low depth of subsurface deformation is typical for all composite materials.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 7","pages":"1072 - 1078"},"PeriodicalIF":0.4,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196251","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

Mapping of daily isolines of the ultra-short waves refractive index in the troposphere of the Baikal region 贝加尔湖地区对流层超短波折射率日等值线的绘制

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-08-21 DOI: 10.1007/s11182-025-03518-9

A. S. Bazarova, R. S. Sychev, A. V. Bazarov, E. Yu. Korovin, B. Z. Garmaev, E. B. Atutov, Yu. B. Bashkuev

引用次数: 0

Physical limitations in fast measuring and adaptive phase systems 快速测量和自适应相位系统的物理限制

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-08-19 DOI: 10.1007/s11182-025-03513-0

V. P. Lukin

{"title":"Physical limitations in fast measuring and adaptive phase systems","authors":"V. P. Lukin","doi":"10.1007/s11182-025-03513-0","DOIUrl":"10.1007/s11182-025-03513-0","url":null,"abstract":"<div><p>Limitations on the design of high-speed systems intended for measuring the optical wave phase and its adaptive control in a turbulent atmosphere are analyzed in the present work. While faster system performance can be beneficial, simply striving for speed without considering other factors can lead to unintended negative consequences. In particular, increasing the operating frequency of a wavefront sensor (WFS) can introduce errors in measured phase fluctuations, because the WFS signal dependence on the amplitude of fluctuations can be affected by the increased frequency, potentially leading to inaccuracies in the measurement of phase changes. For a number of applications, this is primarily caused by the limited photon flux and measurement accuracy of the wavefront sensor. The present work is focused on understanding how atmospheric turbulence affects the phase of light waves and how to accurately measure these effects for application in adaptive optics. A need is revealed to analyze how phase fluctuations, caused by the atmospheric turbulence, change over time. It has been found that the choice of the working WFS frequency depends not only on the parameters of the sensor itself and primarily on the accuracy of its performance, but also on the state of turbulence on atmospheric paths. Therefore, no matter how fast the corrective flexible mirrors in adaptive optics systems are, they need to be given time to work. As a result, inaccurate estimations of phase fluctuations and Zernike polynomial behavior arise at high spatial frequencies due to the influence of the inner scale of turbulence, even when the turbulent intensity fluctuations are weak.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 7","pages":"941 - 949"},"PeriodicalIF":0.4,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196169","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