Russian Physics Journal最新文献_第10页

Determination by scratch testing of the quality of thin-film oxide coatings formed by vacuum-arc plasma-assisted method 真空弧等离子体辅助法形成的氧化薄膜涂层质量的划痕试验测定

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-05-12 DOI: 10.1007/s11182-025-03445-9

N. N. Koval, N. A. Prokopenko, E. A. Petrikova, M. S. Vorobyov, Yu. F. Ivanov

{"title":"Determination by scratch testing of the quality of thin-film oxide coatings formed by vacuum-arc plasma-assisted method","authors":"N. N. Koval, N. A. Prokopenko, E. A. Petrikova, M. S. Vorobyov, Yu. F. Ivanov","doi":"10.1007/s11182-025-03445-9","DOIUrl":"10.1007/s11182-025-03445-9","url":null,"abstract":"<div>Oxide coatings formed on the surface of medical instruments made of titanium-based alloys help physicians to protect patients from toxic titanium alloying elements and increase the resistance of the instruments to scratching and wearing. As a rule, the formation of a coating/substrate system is accompanied by an analysis of the adhesive properties of the applied coating. This paper presents an analysis of the results obtained by studying the structure and adhesive properties of titanium oxide and zirconium oxide films formed on the surface of titanium alloy samples of Grade 5 by vacuum arc plasma-assisted method with varying discharge current values of the plasma source operating on the basis of an independent arc discharge with glow and hollow cathodes. The studies showed that the oxide films contain droplet fraction particles the characteristics of which are determined by the film deposition mode. It has been established that the critical load force at which destruction of (peeling off) the film from the substrate (titanium alloy Grade 5) is observed in the ZrO2 film/Grade 5 substrate system is maximum at the “PINK” discharge current Ip = 0 A and minimum at Ip = 90 A. It was found that in the TiO2 film/Grade 5 substrate system, the maximum value of the critical load force is realized at the “PINK” discharge current Ip = 130 A and minimum at Ip = 0 A.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"392 - 399"},"PeriodicalIF":0.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143048","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

Low resistivity measurement of chromium coatings on zirconium alloys E110 for the production of accident-resistant core components of nuclear reactors 核反应堆耐事故堆芯部件用E110锆合金铬涂层的低电阻率测量

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-05-12 DOI: 10.1007/s11182-025-03449-5

A. M. Salman, V. N. Kudiiarov, A. M. Lider

引用次数: 0

Structure and properties of welding joints of 1370 aluminum alloy obtained by electron-beam welding 1370铝合金电子束焊接接头的组织与性能

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-04-08 DOI: 10.1007/s11182-025-03424-0

V. V. Solov’ev, V. Kh. Dammer, V. P. Krivobokov

引用次数: 0

Structural features of low-stable phase states of aqueous solutions at ultrahigh dilution 超高稀释水溶液低稳定相态的结构特征

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-04-08 DOI: 10.1007/s11182-025-03436-w

A. I. Potekaev, V. V. Obukhov, S. D. Odintsov

{"title":"Structural features of low-stable phase states of aqueous solutions at ultrahigh dilution","authors":"A. I. Potekaev, V. V. Obukhov, S. D. Odintsov","doi":"10.1007/s11182-025-03436-w","DOIUrl":"10.1007/s11182-025-03436-w","url":null,"abstract":"<div>A physical concept of thermodynamic structural-phase states of a physical system is proposed in application to ultrahigh diluted aqueous solutions low-stable to external impacts. The physical analogy between the states of these solutions and the condensed physical systems helps to understand physics of various effects observed in ultrahigh diluted aqueous solutions. In particular, this approach allows the role of shaking of the chemical solutions in the Epstein effect to be evaluated by mechanochemical methods. An analysis of the thermodynamic and structural-phase low-stable states of the physical system makes it possible to propose a possible mechanism for the system transition to a new phase state under a low-stable external impact on the example of an ordering alloy system. In this case, the small external impact (for example, shaking) can lead to significant phase changes of the system state in which the structural units are close thermodynamically, but can differ significantly in symmetry. It is discussed how the effect of the state of the suitable symmetric liquid solution of a substance under a small external impact (for example, in the form of shaking) can be experimentally realized.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 2","pages":"321 - 332"},"PeriodicalIF":0.4,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925595","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

Monitoring of disturbances in the ionospheric layer as a result of solar flares on 31 Aug 2024 using IIOS station data 利用国际空间站数据监测2024年8月31日太阳耀斑引起的电离层扰动

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-04-08 DOI: 10.1007/s11182-025-03438-8

S. J. Hassan, H. Allawi, A. Gehad

{"title":"Monitoring of disturbances in the ionospheric layer as a result of solar flares on 31 Aug 2024 using IIOS station data","authors":"S. J. Hassan, H. Allawi, A. Gehad","doi":"10.1007/s11182-025-03438-8","DOIUrl":"10.1007/s11182-025-03438-8","url":null,"abstract":"<div>The increasing electron density in the ionosphere at the D layer resulting from solar flare X‑rays, is likely to affect the propagation of very low frequency in both magnitudes and variations. The present study analyzes the observed events recorded by the Iraqi Ionospheric Observation Station IISO conducted on the 31st August, 2024 at Thi Qar University. The results show a match coincident with other observatories such as HWU and DHO and a high match with the X‑ray data detected by the GOES-16 satellite. The analysis focuses on three isolated incidents resulting from solar flares of class M and C, where sudden ionospheric disturbances appearing in the amplitude spike belong to classes M1.2, C9 and M1.8. The study and observation using the IISO, are compared with the French station, were signals are received from transmitters HWU, DHO and TTB, as well as GOES satellite data and appear to match these stations. It is found that the TBB signal shows no events well, despite its proximity to the receiver. In general, the obtained results indicate to a noise in the signal coming from several reasons including electromagnetic interference, weather, atmospheric conditions, problems with equipment, transmitter malfunctions at the TBB station, incompatibility, the need to reset transmitters, or solar disturbances such as solar storms and different reception angles, as well as physical obstacles and repeated reflections, which induce noise.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 2","pages":"341 - 350"},"PeriodicalIF":0.4,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925596","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

Photoluminescence studies of Ce3+ doped phosphors: down/up-conversion luminescence Ce3+掺杂荧光粉的光致发光研究：下/上转换发光

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-04-08 DOI: 10.1007/s11182-025-03439-7

P. N. K. Chaitanya, D. Dinkar, P. Indira, A. S. Sai Prasad, M. Sree Ramana, Vikas Dubey, Shireen Aman, Ovica Manners, K. V. R. Murthy

{"title":"Photoluminescence studies of Ce3+ doped phosphors: down/up-conversion luminescence","authors":"P. N. K. Chaitanya, D. Dinkar, P. Indira, A. S. Sai Prasad, M. Sree Ramana, Vikas Dubey, Shireen Aman, Ovica Manners, K. V. R. Murthy","doi":"10.1007/s11182-025-03439-7","DOIUrl":"10.1007/s11182-025-03439-7","url":null,"abstract":"<div>The paper reports on the synthesis and characterisation of Ce3+ activated Mg3WO6 phosphor, with variable (0.5 to 2.5 mol%) concentration of doping Ce3+. The sample is synthesised via the combustion method. The crystal structure is determined by the X‑ray diffraction analysis, which shows the monoclinic structure with a P 1 2/c1 space group. The phosphor surface morphology is analysed by scanning electron microscopy, which shows the non-uniform particle distribution. The EDX analysis confirms the proper formation of phosphor. Photoluminescence study shows that prepared phosphor exhibits both the down- and up-conversion phenomenon. The notable peak at 275 nm is mainly due to the effective transitions from 4f ground state of Ce3+ to the field-splitting levels of 5d state. The emission peak at 475 nm is mainly due to the transitions of 5d excited state to 2F7/2 and 2F5/2 ground states.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 2","pages":"351 - 357"},"PeriodicalIF":0.4,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925593","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

Fatigue strength of peek/carbon fiber laminates with copper and nickel micropowders 铜镍微粉peek/碳纤维层合板的疲劳强度

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-04-03 DOI: 10.1007/s11182-025-03435-x

A. A. Kononova, M. V. Burkov, A. V. Eremin

引用次数: 0

Microstructure and work hardening evolution of ultrafine-grained and coarse-grained alloys Ti–Nb–Zr and Mg–Y–Nd under tension Ti-Nb-Zr和Mg-Y-Nd超细晶和粗晶合金在拉伸作用下的组织和加工硬化演变

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-04-03 DOI: 10.1007/s11182-025-03418-y

A. Yu. Eroshenko, E. V. Legostaeva, I. A. Glukhov, A. I. Tolmachev, P. V. Uvarkin, Yu. P. Sharkeev

引用次数: 0

Investigation of gas flow influence on acoustic waves, propagating downstream and upstream through gas flow in a cylindrical duct 气体流动对声波在圆柱形管道中沿下游和上游传播的影响研究

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-04-03 DOI: 10.1007/s11182-025-03433-z

A. V. Yamkin, N. V. Chukhareva, M. A. Bubenchikov, M. A. Yamkin

{"title":"Investigation of gas flow influence on acoustic waves, propagating downstream and upstream through gas flow in a cylindrical duct","authors":"A. V. Yamkin, N. V. Chukhareva, M. A. Bubenchikov, M. A. Yamkin","doi":"10.1007/s11182-025-03433-z","DOIUrl":"10.1007/s11182-025-03433-z","url":null,"abstract":"<div>The physical and mechanical principles governing aeroacoustic vibrations within a cylindrical channel have been established through a series of numerical experiments aimed at investigating the impact of multidirectional turbulent gas flow on the propagation of these vibrations. The developed physical and mathematical model has demonstrated its efficacy, as verification processes confirmed a strong correspondence between the results of numerical simulations, experimental findings, and existing literature data. This validation allows us to assert the reliability of the model and its potential for further research endeavors. The outcomes of the numerical experiments distinctly reveal that the amplitude of waves propagating upstream surpassed that of downstream and non-flow waves at equal distances from the acoustic source within the cylindrical channel. The results obtained were corroborated through comparison with experimental and relevant literature data. The identified influence of flow can be practically applied in cross-correlation analyses of the amplitude of aeroacoustic vibrations resulting from leaks in gas pipelines, thereby enhancing the accuracy of leak detection systems.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 2","pages":"300 - 307"},"PeriodicalIF":0.4,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925508","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

Maxwell and Einstein-Maxwell equations for homogeneous null Petrov spaces 齐次零彼得罗夫空间的麦克斯韦方程和爱因斯坦-麦克斯韦方程

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-04-01 DOI: 10.1007/s11182-025-03440-0

V. V. Obukhov

引用次数: 0