Problems of Atomic Science and Technology最新文献_第5页

FEATURES OF STRUCTURE, SUBSTRUCTURE, AND RESIDUAL STRESS OF Ti41.5Zr41.5Ni17 QUASICRYSTALS QUENCHED FROM LIQUID STATE 从液态萃取的 Ti41.5Zr41.5Ni17 类晶体的结构、次结构和残余应力特征

Problems of Atomic Science and Technology Pub Date : 2024-01-29 DOI: 10.46813/2024-149-089

S. Malykhin, N. Konotopska, L. E. Konotopsky, S. Surovitskiy, V.V. Starikov, V.V. Grevzov

{"title":"FEATURES OF STRUCTURE, SUBSTRUCTURE, AND RESIDUAL STRESS OF Ti41.5Zr41.5Ni17 QUASICRYSTALS QUENCHED FROM LIQUID STATE","authors":"S. Malykhin, N. Konotopska, L. E. Konotopsky, S. Surovitskiy, V.V. Starikov, V.V. Grevzov","doi":"10.46813/2024-149-089","DOIUrl":"https://doi.org/10.46813/2024-149-089","url":null,"abstract":"The structural state, stress, and substructure parameters of ribbons obtained by rapid solidification from the liquid state of the Ti41.5Zr41.5Ni17 alloy and powders obtained by deformation were investigated using X-ray diffraction and SEM microscopy methods. The influence of sample preparation parameters such as quenching rate and intensity of deformation, on the content of the Ti41.5Zr41.5Ni17 quasicrystalline phase and the crystalline phase of the approximant (W-phase), is considered. It is noted that the volume content of the W-phase increases with higher deformation intensity and decreases with higher quenching rate. Accumulation of specific defects in the quasicrystalline structure, known as phason defects, occurring during quenching, is observed in ribbon samples. The concentration of phason defects is nonuniform over the cross section of the samples, increasing from the side of the ribbon in contact with the quenching wheel to the free surface. This non-uniformity may be associated with the participation of phason defects at the initial stage of the phase transformation during the formation of the W-phase. The concentration of phason defects significantly increases during deformation of ribbons.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":"50 46","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140486997","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

USING ION BEAM ANALYSIS AND COMPUTER TOMOGRAPHY FOR STUDY PRODUCTS MADE FROM CARBON MATERIALS 利用离子束分析和计算机断层扫描技术研究碳材料制成的产品

Problems of Atomic Science and Technology Pub Date : 2024-01-29 DOI: 10.46813/2024-149-128

V. Levenets, I. Gurin, A. Shchur

引用次数: 0

ORBITRON PUMP WITH NITROGEN CRYOPANEL 带氮气低温面板的轨道泵

Problems of Atomic Science and Technology Pub Date : 2024-01-29 DOI: 10.46813/2024-149-038

V. Loboda, V. Zubko, S. Khursenko, V. Kravchenko, А. Chepizhnyi

引用次数: 0

USING OF CARBON-CARBON COMPOSITE MATERIALS FOR CREATION OF THERMAL-RESISTIVE CONVERTER OF THERMAL RADIATION 利用碳-碳复合材料制造热辐射热阻转换器

Problems of Atomic Science and Technology Pub Date : 2024-01-29 DOI: 10.46813/2024-149-125

I. Gurin, Igor S. Nevliudov, V.Ye. Ovcharenko, O.V. Tokarieva

引用次数: 0

EFFECT OF PULSED SUBSTRATE BIAS ON THE STRUCTURE AND PROPERTIES OF NITRIDE COATINGS DEPOSITED BY FILTERED CATHODIC ARC PLASMA 脉冲基底偏压对过滤式阴极电弧等离子体沉积的氮化物涂层的结构和性能的影响

Problems of Atomic Science and Technology Pub Date : 2024-01-29 DOI: 10.46813/2024-149-176

E. Reshetnyak, V.E. Strel’nitskij, V. Vasyliev, A. Luchaninov

{"title":"EFFECT OF PULSED SUBSTRATE BIAS ON THE STRUCTURE AND PROPERTIES OF NITRIDE COATINGS DEPOSITED BY FILTERED CATHODIC ARC PLASMA","authors":"E. Reshetnyak, V.E. Strel’nitskij, V. Vasyliev, A. Luchaninov","doi":"10.46813/2024-149-176","DOIUrl":"https://doi.org/10.46813/2024-149-176","url":null,"abstract":"The results of studies of nitride coatings deposited using a cathodic vacuum arc plasma source with a rectilinear type filter are presented. The effect of parameters of high voltage substrate bias pulses on the deposition rate, composition, structure and mechanical properties of coatings based on TiN and CrN, including multi-component\u0000ones with the additions of Al, Si, Zr, Y, Re, Nb, Hf, was analyzed. With different regimes of bias potential the formation of coatings with a nanocrystalline cubic structure (of the NaCl type) and close to stoichiometric nitrogen content and high hardness of 25…36 GPa is ensured. It was found that changing the amplitude, duration and frequency of pulses allows to effectively controlling the morphology, size of crystallites, texture and stress level in coatings, which effects their mechanical properties. The use of a pulse bias potential with an amplitude of 1…2 kV, a frequency of 10…20 kHz and duty cycle of 10…15% makes it possible to form a homogeneous dense nanostructure with a [110] or [100] texture, an optimal stress level 4…5 GPa and a smooth surface in coatings of\u0000different compositions. It is shown that such a structure provides improved resistance of coatings to various types of wear. Unequivocal correlations were not found between the hardness of the coatings, the modulus of elasticity and their wear.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140487753","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

RADIATION-STIMULATED DIFFUSION IN PLASMA-ION DEPOSITION OF COATINGS 等离子体离子沉积涂层中的辐射刺激扩散

Problems of Atomic Science and Technology Pub Date : 2024-01-29 DOI: 10.46813/2024-149-116

O.I. Kalinichenko, V.E. Strel’nitskij

{"title":"RADIATION-STIMULATED DIFFUSION IN PLASMA-ION DEPOSITION OF COATINGS","authors":"O.I. Kalinichenko, V.E. Strel’nitskij","doi":"10.46813/2024-149-116","DOIUrl":"https://doi.org/10.46813/2024-149-116","url":null,"abstract":"The diffusion of defects in a carbon coating when its surface is bombarded with heavy low-energy ions is theoretically studied, taking into account a sharp increase in the rate of kinetic processes in nonlocal thermoelastic peaks (NTPs) of ions, i.e., in superheated nanometer regions that arise around ion trajectories in the target material. The thermal energy density in NTP is comparable to or exceeds the activation energies of many\u0000physical and chemical processes, as a result of which their contribution to the total diffusion of defects in the near-surface layer of the target can be significant. Based on the NTP model, expressions were obtained for the average diffusion coefficient in the near-surface layer of the target, controlled by a beam of incident ions, as well\u0000as for the diffusion acceleration index. The dependences of the diffusion acceleration index on the ion energy are presented for various species of ions at selected activation energies and ion flux densities. Numerical calculation of the obtained expressions using the SRIM2000 software package showed that, at the selected ion flux density J,\u0000diffusion acceleration occurs only for processes with the activation energy exceeding a certain threshold value determined by the value of J, the type and energy of the ions.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":"39 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140488293","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

TWO-COMPONENT SYSTEMS WITH LOW SOLUBILITY OF ELEMENTS IN THE SOLID α-PHASE 固体 α 相中元素溶解度较低的双组分系统

Problems of Atomic Science and Technology Pub Date : 2024-01-29 DOI: 10.46813/2024-149-021

O.P. Shcherban

引用次数: 0

OBTAINING AND APPLICATION OF SOME HIGH-PURE METALS 一些高纯金属的获得和应用

Problems of Atomic Science and Technology Pub Date : 2024-01-29 DOI: 10.46813/2024-149-003

M. Pylypenko, A. Drobyshevska, O. E. Kozhevnikov

引用次数: 0

MATHEMATICAL MODELING OF IMPURITY MOTION ATOMS IN THE GRADIENT PRESSURE FIELD OF MELTS 熔体梯度压力场中杂质运动原子的数学建模

Problems of Atomic Science and Technology Pub Date : 2024-01-29 DOI: 10.46813/2024-149-099

V. Skachkov, O. R. Berezhna, H.V. Karpenko

引用次数: 0

CREEP OF VT1-0 TITANIUM ALLOY IN DIFFERENT STRUCTURE STATES AFTER IRRADIATION WITH HELIUM IONS 氦离子辐照后不同结构状态下 vt1-0 钛合金的蠕变

Problems of Atomic Science and Technology Pub Date : 2024-01-29 DOI: 10.46813/2024-149-154

V. Sokolenko, V.I. Zhurba, E. Karaseva, A. Mats, E. S. Savchuk, V. A. Frolov

引用次数: 0