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Высоковольтный многоканальный импульсный генератор для электроразрядных технологий 高压多路脉冲发生器
8th International Congress on Energy Fluxes and Radiation Effects Pub Date : 2022-11-14 DOI: 10.56761/efre2022.s4-p-001001
В.М. Алексеенко, А.А. Жерлицын, Сергей Сергеевич Кондратьев
{"title":"Высоковольтный многоканальный импульсный генератор для электроразрядных технологий","authors":"В.М. Алексеенко, А.А. Жерлицын, Сергей Сергеевич Кондратьев","doi":"10.56761/efre2022.s4-p-001001","DOIUrl":"https://doi.org/10.56761/efre2022.s4-p-001001","url":null,"abstract":"В работе представлены конструкция и результаты испытаний высоковольтного импульсно-периодического генератора, разработанного для дробления материалов. Принцип работы генератора состоит в импульсной зарядке высоковольтного накопителя с помощью повышающего трансформатора. Высоковольтный накопитель состоит из 4 параллельно включённых ветвей, каждая из которых имеет ёмкость 12.5 нФ. Каждая ветвь подключается к отдельному разрядному контуру в камере дробления. Испытания показали возможность одновременного получения четырёх разрядных каналов в камере дробления. Выходной импульс генератора имел следующие параметры: амплитуда напряжения до 100 кВ, время нарастания напряжения порядка 60 нс, амплитуда разрядного тока до 5 кА на канал и длительность полупериода порядка 0.5 мкс. Исследована как возможность увеличения производительности процесса дробления без увеличения удельных энергозатрат при переходе от одноканального режима дробления к многоканальному, так и фракционный состав продуктов дробления для обоих режимов.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114462567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Irradiation effect of intense pulsed ion beam on (TiZrNbTaCr)C 强脉冲离子束对(TiZrNbTaCr)C的辐照效应
8th International Congress on Energy Fluxes and Radiation Effects Pub Date : 2022-11-14 DOI: 10.56761/efre2022.s1-o-051301
S.J. Zhang, L. Chen, A. Stepanov, O.P. Lapteva, G. Kholodnaya, X. Yu, M. Xu, Y.J. Wang, G. Remnev, X. Le
{"title":"Irradiation effect of intense pulsed ion beam on (TiZrNbTaCr)C","authors":"S.J. Zhang, L. Chen, A. Stepanov, O.P. Lapteva, G. Kholodnaya, X. Yu, M. Xu, Y.J. Wang, G. Remnev, X. Le","doi":"10.56761/efre2022.s1-o-051301","DOIUrl":"https://doi.org/10.56761/efre2022.s1-o-051301","url":null,"abstract":"Intense pulsed ion beam (IPIB), featured with pulsed high-power density, has been widely used in the modification of materials. The influence of IPIB irradiation on surface microstructure and phase structure of (TiZrNbTaCr)C ceramics was investigated in this work. Experiments were carried out using TEMP-4M accelerator with peak accelerating voltage, current density, and pulse duration (FWHM) of 220 kV, 150 A/cm2, and 80 ns respectively. Atomic force microscope (AFM), scanning electron microscope and Energy-dispersive X-ray spectroscopy (SEM-EDS), as well as X-ray diffraction (XRD) were used to analyze the surface microstructure and phase structure of (TiZrNbTaCr)C ceramics under IPIB irradiation. The AFM and SEM images showed that the grain size of (TiZrNbTaCr)C increased, and the size and quantity of holes decreased after IPIB irradiation which might improve the erosion resistance of material. After IPIB irradiation, the segregation of Cr and Ta elements were observed by EDS measurement. The phase structure stability of samples under IPIB irradiation was confirmed by XRD and the lattice parameters and crystal spacing was discussed as well.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114625594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evolution of the structure and properties of AISI 1020 steel subjected to elion nitriding in a low-pressure gas discharge plasma 低压气体放电等离子体离子渗氮对AISI 1020钢组织和性能的影响
8th International Congress on Energy Fluxes and Radiation Effects Pub Date : 2022-11-14 DOI: 10.56761/efre2022.c3-p-012501
I. Lopatin, Y. Akhmadeev, E. Petrikova, M. Rygina, Y. Ivanov
{"title":"Evolution of the structure and properties of AISI 1020 steel subjected to elion nitriding in a low-pressure gas discharge plasma","authors":"I. Lopatin, Y. Akhmadeev, E. Petrikova, M. Rygina, Y. Ivanov","doi":"10.56761/efre2022.c3-p-012501","DOIUrl":"https://doi.org/10.56761/efre2022.c3-p-012501","url":null,"abstract":"A method and experiments of nitriding AISI 1020 steel with simultaneous heating of the samples with the electron component of plasma are described. A nitriding regime is explained that makes it possible to form a hardened layer up to 500 µm thick. It is shown that the microhardness of the surface layer of the steel increases with the increase in the nitriding temperature and correlates with the relative content of the nitride phase. It has found that in the nitriding temperature range from 450 °C to 600 °C, the maximum microhardness is formed in the near-surface layer at the depth of ~10 µm at 520 °C. It has been established that the steel wear resistance is determined by the concentration of nitrogen atoms in the α-Fe crystal lattice. It has been shown that micropores formed in the surface layer of the steel nitrided at 520 °C contribute to an increase in material wear under dry friction.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116994384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diffuse vacuum arc discharge with heated cathode made of mixture of ceramic and metal powders 用陶瓷和金属粉末混合制成的加热阴极进行扩散真空电弧放电
8th International Congress on Energy Fluxes and Radiation Effects Pub Date : 2022-11-14 DOI: 10.56761/efre2022.c1-o-043402
R. Usmanov, A. Melnikov, V. Polistchook, S. Vetrova
{"title":"Diffuse vacuum arc discharge with heated cathode made of mixture of ceramic and metal powders","authors":"R. Usmanov, A. Melnikov, V. Polistchook, S. Vetrova","doi":"10.56761/efre2022.c1-o-043402","DOIUrl":"https://doi.org/10.56761/efre2022.c1-o-043402","url":null,"abstract":"The paper present results of an experimental study of a plasma flow parameters generated by a vacuum arc discharge with heated cathode made of mixture of ceramic and metal powders. The discharge existed in a diffuse mode of cathode current attachment. The diffuse mode was characterized by relatively low values of cathode current density (10–100 A/cm 2 ), absence of significant voltage oscillations and stable glow of plasma formation. The data on mean charge of the arc plasma flux, ion energies and ion composition measured by time-of-flight mass spectroscopy method were obtained. It was shown that chromium is a main source of the plasma forming medium when cerium dioxide is a main source of electrons of thermionic emission. Obtained results can be useful in designing of stable plasma sources of multi-component condensed substances for wide range of applications from deposition of composite coatings to plasma mass separation.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123954671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sub-terahertz gyrotron based on the use of external frequency-tunable mirror 亚太赫兹回旋管采用基于外部频率可调的反射镜
8th International Congress on Energy Fluxes and Radiation Effects Pub Date : 2022-11-14 DOI: 10.56761/efre2022.s3-p-038102
I. Bandurkin, Yuriy K. Kalynov, I. Osharin, N. Peskov, A. V. Savilov, D. Shchegolkov
{"title":"Sub-terahertz gyrotron based on the use of external frequency-tunable mirror","authors":"I. Bandurkin, Yuriy K. Kalynov, I. Osharin, N. Peskov, A. V. Savilov, D. Shchegolkov","doi":"10.56761/efre2022.s3-p-038102","DOIUrl":"https://doi.org/10.56761/efre2022.s3-p-038102","url":null,"abstract":"We describe a concept of a sub-terahertz frequency-tunable gyrotron based on a combination of a low-Q irregular cavity and a frequency-tunable external reflector. Simulations predict possibilities for creation of gyrotrons with high (20% and higher) efficiencies provided in a wide (~10%) frequency band.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124681549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-power nanosecond electromagnetic pulses and dielectric barrier discharge in air consequences on structural and structure sensitive properties of ilmenite surface 高功率纳秒级电磁脉冲和空气介质阻挡放电对钛铁矿表面结构和结构敏感性的影响
8th International Congress on Energy Fluxes and Radiation Effects Pub Date : 2022-11-14 DOI: 10.56761/efre2022.c3-p-004001
I. Bunin, N. Anashkina
{"title":"High-power nanosecond electromagnetic pulses and dielectric barrier discharge in air consequences on structural and structure sensitive properties of ilmenite surface","authors":"I. Bunin, N. Anashkina","doi":"10.56761/efre2022.c3-p-004001","DOIUrl":"https://doi.org/10.56761/efre2022.c3-p-004001","url":null,"abstract":"The paper presents the results of experimental studies on the influence of two types of nonequilibrium electrical discharges (high-power nanosecond electromagnetic pulse (HPEMP) and dielectric barrier discharges (DBD) in air at atmospheric pressure) have on the surface morphology, microhardness, and physicochemical properties of natural ilmenite (Juina deposit of Brazil). Scanning electron microscopy (SEM-EDX), Fourier-transform infrared spectroscopy (FTIR), microhardness testing, contact angles of surface wetting, and streaming potentials are used to examine the morphology, defects, chemical composition of ilmenite surfaces, and its structure sensitive properties. Using FTIR, we established, the following possible mechanisms of the nonthermal effect of HPEMP and DBD low temperature plasma irradiation, which modify the structural state of ilmenite surfaces: (i) the transformation (destruction) of the mineral’s crystalline structure; (ii) the electrical disintegration and removal of fine films of iron oxides (hydroxides) from the ilmenite surfaces, and (iii) the subsequent hydroxylation and/or oxidation of Fe2+ to Fe3+ iron ions on the surfaces, due to the effect of the products of microdischarge plasmas. Advantages of using brief energy treatments (ttreat = 10–30 s) to modify the structural-chemical state of ilmenite surfaces and the physicochemical properties of mineral in order to improve the efficiency of processing complex titanium ores are shown. Keywords: ilmenite, high-power nanosecond electromagnetic pulses, dielectric barrier discharge, surface, microscopy, spectroscopy, microhardness, electrokinetic potential, contact angle.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128322924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Высокоскоростной синтез тонких пленок LiPON термическим испарением Li3PO4 в азотной плазме
8th International Congress on Energy Fluxes and Radiation Effects Pub Date : 2022-11-14 DOI: 10.56761/efre2022.c4-o-018701
A.С. Каменецких, Н. В. Гаврилов, П.В. Третников, И.С. Жидков, Иван Андреевич Морозов, A. A. Ершов
{"title":"Высокоскоростной синтез тонких пленок LiPON термическим испарением Li3PO4 в азотной плазме","authors":"A.С. Каменецких, Н. В. Гаврилов, П.В. Третников, И.С. Жидков, Иван Андреевич Морозов, A. A. Ершов","doi":"10.56761/efre2022.c4-o-018701","DOIUrl":"https://doi.org/10.56761/efre2022.c4-o-018701","url":null,"abstract":"Тонкие пленки литий-проводящего ионного электролита LiPON перспективны для создания полностью твердотельных литий-ионных микробатарей. Однако наиболее распространенный метод получения таких пленок ВЧ магнетронным распылением имеет низкую производительность. Для увеличения скорости синтеза тонких пленок LiPON, мы использовали метод анодного испарения ортофосфата лития в азотной плазме дуги низкого давления. Показано, что анодное испарение Li3PO4 в дуге сопровождается интенсивным разложением паров Li3PO4, которое приводит к увеличению концентрации свободных атомов лития, как в плазме дуги, так и в объеме пленки. Высокая диффузионная подвижность атомов лития в пленки и их взаимодействие со свободными атомами кислорода, которые возникают в результате замещения атомами азота в структуре LiPON, способствуют образованию в растущей пленки включений с составом, отличным от состава LiPON. Этот эффект затрудняет получение однофазных LiPON пленок с однородной структурой и ухудшает ионную проводимость пленок. Предложен метод непрямого накала тигля с Li3PO4, который уменьшает взаимодействие плазмы разряда с плотным паром вблизи поверхности расплава. Представлены результаты измерения элементного состава пленок и их структуры. Снижение степени разложения паров позволило повысить скорость испарения Li3PO4 и получить LiPON пленки с ионной проводимостью до 2·10-6 (Ом·cм)-1 при скорости осаждения пленки до 15 нм/мин","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127220016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling of reactive sputtering and evaporation in a hot-target magnetron discharge 热靶磁控管放电中反应溅射和蒸发的建模
8th International Congress on Energy Fluxes and Radiation Effects Pub Date : 2022-11-14 DOI: 10.56761/efre2022.c2-o-047203
D. Kolodko, S. Sorokin, A. Kaziev
{"title":"Modeling of reactive sputtering and evaporation in a hot-target magnetron discharge","authors":"D. Kolodko, S. Sorokin, A. Kaziev","doi":"10.56761/efre2022.c2-o-047203","DOIUrl":"https://doi.org/10.56761/efre2022.c2-o-047203","url":null,"abstract":"We theoretically consider the joint influence of hot-target effects and the pulsed nature of the discharge on the state of the target surface. We enhance the previously modified time-dependent Berg model by taking into account the evaporation of target material as well as the influence of target temperature on the rate of chemical reactions on its surface. The system of equations describes the state of the target in terms of poisoned area fractions θ1 and θ2, where index 1 corresponds to the monoatomic surface layer, and index 2 – to the layer beneath the surface (subsurface layer). The processes of chemisorption on target surface, sputtering of reactive gas atoms from target, implantation of reactive gas ions to the sub-surface layer, material evaporation, and transfer between the layers are considered. A separate equation connects the atomic fluxes of reactive gas associated with target and substrate surfaces with the volumetric characteristics, such as gas injection rate and pumping speed. The system of equations is solved numerically, and test results are presented.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"2999 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127460642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of copper oxide films on alumina in a hot-target HiPIMS process 热靶HiPIMS工艺在氧化铝上制备氧化铜膜
8th International Congress on Energy Fluxes and Radiation Effects Pub Date : 2022-11-14 DOI: 10.56761/efre2022.c4-p-048001
V. Lisenkov, A. Kaziev, D. G. Ageychenkov, A. Tumarkin, D. Kolodko, M. Kharkov, M. Kukushkina, M. Zaripova
{"title":"Preparation of copper oxide films on alumina in a hot-target HiPIMS process","authors":"V. Lisenkov, A. Kaziev, D. G. Ageychenkov, A. Tumarkin, D. Kolodko, M. Kharkov, M. Kukushkina, M. Zaripova","doi":"10.56761/efre2022.c4-p-048001","DOIUrl":"https://doi.org/10.56761/efre2022.c4-p-048001","url":null,"abstract":"Copper oxide thin films are widely used in many fields, such as solar cells, optoelectronics, catalysis, biosensors, photoelectrochemical sensors, supercapacitors, lithium-ion batteries, infrared photodetectors, electrochemical sensors, and gas sensors. They can also be applied to improve adhesion of comparatively thick copper coatings for ceramic PCB metallization. Here, we report the results of CuxOydeposition on alumina substrates in a hot-target HiPIMS discharge. The experiments were carried out in a magnetron deposition facility with thermally insulated copper target. CuxOy films with thickness around 2–3 μm were prepared. Their structure was studied with scanning electron microscope, and the composition was measured by EDS and XRD methods. The results showed predominant growth of stoichiometric CuO films. The correlations between deposition parameters and coating characteristics are discussed.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127525556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-current THz-band gyrotrons based on axial-slit cavities 基于轴向狭缝腔的大电流太赫兹波段回旋管
8th International Congress on Energy Fluxes and Radiation Effects Pub Date : 2022-11-14 DOI: 10.56761/efre2022.s3-p-032802
Y. Danilov, A. Leontyev, A. Malkin, R. Rozental, D. Shchegolkov
{"title":"High-current THz-band gyrotrons based on axial-slit cavities","authors":"Y. Danilov, A. Leontyev, A. Malkin, R. Rozental, D. Shchegolkov","doi":"10.56761/efre2022.s3-p-032802","DOIUrl":"https://doi.org/10.56761/efre2022.s3-p-032802","url":null,"abstract":"We propose a variant of a slotted cavity for high-current gyrotrons based on the coupling of modes with proportional azimuthal indexes and close eigenvalues. A finite-element method simulation is presented, which confirm its high selectivity. 3D PIC simulations of a high-current relativistic gyrotron in the 0.3 THz and 0.5 THz bands with an output power of about 70–80 MW are performed.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"6 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132477874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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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