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Changes in the Structure of Irradiated Steel 0.12C18Cr10NiTi Caused by Plastic Deformation at Different Temperatures 不同温度下辐照0.12C18Cr10NiTi钢塑性变形引起的组织变化
Pub Date : 2020-09-14 DOI: 10.1109/EFRE47760.2020.9242176
V. Firsova, S. Kislitsin, L. Dikova, A. Dikov
The results of a fractographic study of the fracture surface of samples of irradiated steel 0.12C18Cr10NiTi after tensile tests at temperatures of 24, 350, 450 °C are presented Samples for studies were prepared from the faces of the hexagonal assembly ducts of the fast neutron reactor BN-350 after irradiation with sodium and subsequent storage of water in the reactor. It is shown that with increasing test temperature, the plastisity of steel decreases. Based on the analysis results, it was concluded that a decrease in the ductility of steel with an increase in the test temperature may be due to a change in the fracture mechanism under the action of shear stresses, which was facilitated by local increase in the porosity of the material as a result of grains accommodation processes of the rotational type.
本文介绍了辐照后0.12C18Cr10NiTi钢试样在24、350、450℃拉伸试验后断口的断口形貌研究结果。研究样品是在快中子反应堆BN-350的六角形装配管表面经钠辐照和随后在反应堆中储水后制备的。结果表明,随着试验温度的升高,钢的塑性降低。分析结果表明,随着试验温度的升高,钢的塑性降低可能是由于在剪切应力作用下断裂机制发生了变化,这是由于旋转型晶粒容纳过程导致材料孔隙率的局部增加所导致的。
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引用次数: 0
Robotic Microplasma Spraying and Characterization of Zirconium Coatings 机器人微等离子喷涂及锆涂层的表征
Pub Date : 2020-09-14 DOI: 10.1109/EFRE47760.2020.9242043
D. Alontseva, A. Khozhanov, S. Voinarovich, O. Kyslytsia, N. Prokhorenkova, A. Sadibekov, S. Kalyuzhny, A. Krasavin
The paper presents new results of studying the influence of the parameters of microplasma spraying of Zr wire on the structure of Zr coatings. This study focuses on new robot-assisted technologies for plasma coating of medical implants. This includes robotic microplasma spraying of Zr coatings on biomedical Ti implants. The design of the movement of the robot arm provides a coordinated and individual operation of the plasma coating. Scanning electron microscopy was used to analyse the structure of the coatings. The possibility of controlling the porosity of Zr microplasma coatings in the range from 2.8% to 20.3% by changing the parameters of microplasma deposition was established. The new robotic microplasma spraying technology developed from this research represents a promising solution for medical implant manufacturing.
本文介绍了Zr丝微等离子喷涂工艺参数对Zr涂层结构影响的研究新成果。本研究的重点是机器人辅助医疗植入体等离子涂层的新技术。这包括机器人微等离子体在生物医学钛植入物上喷涂Zr涂层。机械臂的运动设计提供了等离子体涂层的协调和个性化操作。利用扫描电镜对涂层的结构进行了分析。通过改变微等离子体沉积参数,可以将Zr微等离子体涂层的孔隙率控制在2.8% ~ 20.3%范围内。这项研究开发的新型机器人微等离子喷涂技术代表了医疗植入物制造的一个有前途的解决方案。
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引用次数: 0
Deposition of Optically Transparent Copper Films on Dielectric Substrates Using the Plasma Focus Installation 利用等离子体聚焦装置在介质基板上沉积光学透明铜膜
Pub Date : 2020-09-14 DOI: 10.1109/EFRE47760.2020.9242168
V. Kolokoltsev, I. Borovitskaya, V. Nikulin, P. Silin, G. Bondarenko, V. Degtyarev
Thin optically transparent homogeneous copper films on silicate glass substrates (size ~ 35×35 mm) were obtained at the Plasma focus facility (PF-4, LPI). The films were obtained by deposition from “metal plasma” formed during ablation of the copper anode of the PF installation. The films were deposited in the atmosphere of the plasma-forming gas argon at a pressure of ~ 1 Torr. The film uniformity was controlled by measuring the transmission spectrum in the middle and at the edge of the glass plate and was ~ 10%. Transmission spectra of films on glass substrates were measured in the range of 0.3-1.0 µ at temperature 300K. The transmission spectrum of Cu films is mainly determined by light scattering on small particles < 0.3 µ. Good adhesion of films is due to the formation of a transition layer on the surface of glass plates. Depending on the number of plasma pulses optical copper films were obtained as dielectric and also electrically conductive.
在等离子体聚焦装置(PF-4, LPI)上,在硅酸盐玻璃衬底上获得了薄的光学透明均匀铜膜(尺寸~ 35×35 mm)。该薄膜是由PF装置的铜阳极烧蚀过程中形成的“金属等离子体”沉积而成的。薄膜是在等离子体形成气体氩气的气氛下,在~ 1 Torr的压力下沉积的。通过测量玻璃板中部和边缘的透射光谱来控制膜均匀性,均匀度为~ 10%。在300K温度下,测量了玻璃基板上薄膜在0.3 ~ 1.0µ范围内的透射光谱。Cu薄膜的透射光谱主要由光在< 0.3µ的小颗粒上的散射决定。膜的良好附着力是由于在玻璃板表面形成过渡层。根据等离子体脉冲的数量,可以得到既具有介电性又具有导电性的光学铜膜。
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引用次数: 0
Ni-Al Film Multilayered Structure Effect on Melting Threshold and Melt Thickness in Ni-Al Surface Alloy Forming Process Ni-Al膜多层结构对Ni-Al表面合金成形过程中熔化阈值和熔体厚度的影响
Pub Date : 2020-09-14 DOI: 10.1109/EFRE47760.2020.9242121
D. Shepel', E. Yakovlev, A. Markov, V. Petrov, A. Solovyov
The synthesis of the surface Ni-Al alloy on a steel substrate is numerically studied. Surface alloys have a significant advantage over coatings since they provide the highest level of adhesion. Heat resistant alloys based on nickel-aluminum are widely used in engineering due to their low density, combination of high thermal conductivity and fracture strength at high temperatures. The application of the Ni and Al multilayer structure for the formation of the surface Ni-Al alloy by the method of liquid-phase mixing is studied. The effect of geometry parameters such as thicknesses of layers is considered. At a certain ratio of effective layer thicknesses the melting threshold of the multilayer structure is minimal.
对钢基体表面Ni-Al合金的合成进行了数值研究。表面合金比涂层具有显著的优势,因为它们提供最高水平的附着力。镍铝耐热合金具有密度小、导热系数高、高温下抗断裂强度高等特点,在工程上得到了广泛的应用。研究了液相混合法制备Ni、Al多层结构在表面Ni-Al合金中的应用。考虑了层厚度等几何参数的影响。在一定的有效层厚度比下,多层结构的熔化阈值最小。
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引用次数: 0
Electron-Beam Deposition of Magneto-Dielectric Coatings in Medium Vacuum 介质真空中磁介质涂层的电子束沉积
Pub Date : 2020-09-14 DOI: 10.1109/EFRE47760.2020.9242134
Y. Yushkov, A. Tyunkov, E. Oks, D. Zolotukhin, A. Klimov
Materials, combining dielectric and magnetic properties, are very attractive to use in such fields of industry as RF electronics and aerospace industry, for the manufacturing of radio-absorbing coatings. The emerging trend towards miniaturization of the various devices such as unmanned aerial vehicles requires deposition of thin and light-weight films that combine magnetic and dielectric properties. In this work we propose an advanced approach to formation of such thin magneto-dielectric coatings – by the use of a fore-vacuum plasma-cathode electron source. Using the electron-beam evaporation of dielectric (alumina ceramics) and magnetic targets in medium vacuum (several Pa), we create dense multicomponent plasma, which provides the flux of the particles of gas and the target materials, allowing to deposit magneto-dielectric coatings on a metallic substrate with a very high deposition rate (approximately microns per minute), and high degree of coating uniformity. We present here our preliminary results on the electron-beam evaporation of ceramic and magnetic targets.
结合介电和磁性能的材料在射频电子和航空航天工业等工业领域非常有吸引力,可用于制造无线电吸收涂层。各种设备(如无人驾驶飞行器)的小型化趋势要求沉积薄而轻的结合磁性和介电性能的薄膜。在这项工作中,我们提出了一种先进的方法来形成这种薄磁介质涂层-通过使用前真空等离子体阴极电子源。利用介质真空(几Pa)中电介质(氧化铝陶瓷)和磁性目标的电子束蒸发,我们创造了密集的多组分等离子体,它提供了气体颗粒和目标材料的通量,允许在金属基板上沉积磁介质涂层,具有非常高的沉积速率(约每分钟微米)和高度的涂层均匀性。本文给出了陶瓷靶和磁性靶的电子束蒸发的初步结果。
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引用次数: 0
Increasing Stability of Operation of an Electron Source with Plasma Cathode by Means of Beam Deflecting by Using a Leading Magnetic Field 用超前磁场偏转束流提高等离子体阴极电子源工作稳定性
Pub Date : 2020-09-14 DOI: 10.1109/EFRE47760.2020.9242044
V. Shin, V. Devyatkov, P. Moskvin, M. Vorobyov, S. Doroshkevich
In electron sources, which are a vacuum or plasma-filled diode, the parameters of electron beams are often limited by the electric breakdown of the high-voltage accelerating gap. The paper presents a method of increasing the electric strength of the accelerating gap, based on the location of the electron gun and collector in different planes. With this arrangement of the installation nodes, it is possible to reduce the influence of the vapors of the target material and the fraction of ions from the collector plasma moving in the direction of the emission electrode. The paper presents the design of the deflecting system of the electron beam for the “SOLO” pulsed electron-beam installation and the results of studying the mechanism of electric breakdown of the accelerating gap.
在真空或等离子体填充二极管的电子源中,电子束的参数常常受到高压加速间隙的电击穿的限制。本文根据电子枪和集电极在不同平面上的位置,提出了一种提高加速间隙电场强度的方法。通过安装节点的这种布置,可以减少目标材料的蒸气和从收集器等离子体中向发射电极方向移动的离子的比例的影响。本文介绍了“SOLO”脉冲电子束装置中电子束偏转系统的设计和加速间隙电击穿机理的研究结果。
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引用次数: 0
Feature of the Work of the Marx Generator with Screened Cascades Installed in a Metal Conducting Tank 金属导槽式屏蔽叶栅马克思发电机的工作特点
Pub Date : 2020-09-14 DOI: 10.1109/EFRE47760.2020.9242093
V. Kokshenev
A method for generating a powerful rectangular pulse at an active load without an additional step of energy compression in the form of a traditional forming line is considered. The method is based on the operation of the Marx generator of a coaxial design in the intermediate inductive storage mode. An analysis of the operation of the circuit is made. It is shown that the inductances Ls and the capacitance of the Cs steps relative to the conductive screen distributed over the steps of the Marx generator form a forming line, the energy of which, when using a current chopper, is stored in the circuit inductance. As a result, an impulse of duration $taucong$ 2N·(Ls·CS)1/2, where $N$ is the number of stages of the Marx generator, is formed on the active load (e-beam diode). The results of calculations and test experiments during the operation of the Marx generator located in a conducting screen with a current chopper based on an electric explosion of conductors (EEC) are presented.
研究了一种在有源负载下产生强力矩形脉冲的方法,该方法不需要以传统成形线的形式进行额外的能量压缩。该方法是基于马克思发电机在中间感应存储模式下同轴设计的工作原理。对该电路的工作原理进行了分析。结果表明,分布在马克思发电机台阶上的电感Ls和Cs台阶相对于导电屏的电容形成一条形成线,当使用电流斩波器时,其能量存储在电路电感中。结果,在有源负载(电子束二极管)上形成持续时间为$taucong$ 2N·(Ls·CS)1/2的脉冲,其中$N$是马克思发电机的级数。本文介绍了基于导体电爆炸的电流斩波器设在导电屏中的马克思发电机运行过程中的计算和试验结果。
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引用次数: 0
2020 7th International Congress on Energy Fluxes and Radiation Effects (EFRE) 2020第七届国际能量通量与辐射效应大会
Pub Date : 2020-09-14 DOI: 10.1109/efre47760.2020.9242074
A. Yakovlev, V. Koshelev, G. Remnev, V. Tarasenko, I. Pegel, Stanislav Chaykovsky, V. Glukhikh, D. Efremov, Evgenij Grabovski, Francis Lassalle, M. Petelin, N. Ratakhin, S. Rukin, Marek Sadowski, Victor Selemir, Valentin Smirnov, V. Shpak
The present issue of the journal is based on the materials of the 7th International Congress on Energy Fluxes and Radiation Effects 2020 (EFRE 2020) that was held on September 14 to 26, 2020. The event was held online, but all organizers are located in Tomsk, because Tomsk is a city having strong scientific and educational network including outstanding physical and technological schools. Most of the scientific topics of
本刊以2020年9月14日至26日举行的2020年第七届国际能量通量和辐射效应大会(EFRE 2020)的材料为基础。这次活动是在网上举行的,但所有组织者都设在托木斯克,因为托木斯克是一个拥有强大的科学和教育网络的城市,包括优秀的体育和技术学校。大多数的科学课题
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引用次数: 1
Thermophysical Model of Electron Beam Boriding of Titanium Alloy VT-1 VT-1型钛合金电子束渗硼热物理模型
Pub Date : 2020-09-14 DOI: 10.1109/EFRE47760.2020.9241923
A. Lapina, N. Smirnyagina
The article is aimed at developing a thermophysical model of electron beam boriding of titanium alloy VT-1. Features of introducing of the focused electron beam into titanium alloy VT-1 were investigated. Modeling of thermophysical processes was carried out using the COMSOL Multiphysics software complex. The stages of constructing a mathematical model of thermal fields arising in the sample during electron beam processing are considered. Numerical calculations made it possible to show that the temperature-time conditions of heating and cooling of the titanium alloy VT-1 affect the nature of structural transformations.
本文旨在建立VT-1钛合金电子束渗硼的热物理模型。研究了聚焦电子束引入VT-1钛合金的特点。利用COMSOL Multiphysics软件复合体对热物理过程进行建模。考虑了建立电子束处理过程中试样热场数学模型的各个阶段。数值计算表明,加热和冷却的温度-时间条件会影响VT-1钛合金的结构转变性质。
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引用次数: 0
A Detection System with Low Sampling Distortion for Application in Optical Array Sensing in Gas Phase 用于气相光学阵列传感的低采样失真检测系统
Pub Date : 2020-09-14 DOI: 10.1109/EFRE47760.2020.9242148
R. Chuvashov, A. Baranova, K. Khokhlov, E. Verbitskiy
An inexpensive hand-held device for analysis of fluorimetric sensor arrays has been developed. The device makes use of a web camera microcontroller to simultaneous acquisition of optical signal intensity from an array of fluorescent sensors at scan rates up to 11 Hz. The temperature control system address a problem of analyte adsorption on internal surfaces of the airway. Signal-to-noise ratios allow registering luminosity attenuation of fluorophores down to a 1.2 % from a single frame of observation.
开发了一种廉价的手持式荧光传感器阵列分析装置。该设备利用网络摄像头微控制器,以高达11赫兹的扫描速率同时采集来自荧光传感器阵列的光信号强度。温度控制系统解决了分析物在气道内表面吸附的问题。信噪比允许从单帧观察中记录荧光团的光度衰减至1.2%。
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引用次数: 1
期刊
2020 7th International Congress on Energy Fluxes and Radiation Effects (EFRE)
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