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Point Defect Model for the kinetics of oxide film growth on the surface of T91 steel in contact with lead–bismuth eutectic
Corrosion Science. 2023. Vol. 211. Article 110829.
Point Defect Model (PDM) has been successfully employed for aqueous solutions to describe the rate of surface corrosion of structural materials. In this work, the adaptation of PDM for the case of lead–bismuth coolant is developed. The necessary modifications in the set of electrochemical reactions and in the model of electrostatic potential distribution in the oxide film are made. Parameters of the proposed model, PDM_PB, are optimized using the experimental data for T91 grade steel. The obtained adaptation of PDM shows applicability to the case of lead and lead–bismuth coolants which is of critical importance for the next-generation fast-neutron reactors.
Publication based on the results of:
Fabik R., Kliber J., Mamuzic I. et al., Metalurgija 2012 Vol. 51 No. 3 P. 341-344
The aim of this paper is to critically assess the potential of mathematical modelling which uses finite element method software for solving operation problems in the hot rolling of flat and long products. We focused on concrete issues faced by rolling plants in the Moravian-Silesian region (Czech Republic). The investigation was always combined with field ...
Added: December 17, 2012
Bondarenko G., Skazochkin A. V., Kislov S. V. et al., , in : Proceedings of 10th International Conference “New Electrical and Electronic Technologies and their Industrial Implementation” (Zakopane, Poland, June 27 – 30, 2017). : Lublin : lublin University of Technology, 2017. P. 50.
The present report describes the results of a study of some tribological parameters of surfaces of friction pairs of some kinds of steel with mineral layers. ...
Added: July 5, 2017
Puzino Y. A., Aksenov S. A., В кн. : 13-я Международная конференция «АВИАЦИЯ И КОСМОНАВТИКА — 2014». : СПб. : Мастерская печати, 2014. С. 692-693.
The high-strength steels (HSLA) used in such fields, which require light and reliable design. First of all, it's machine-building industry. The aim of this paper – on the basis of obtained data, after carried out a tests using hot deformation of steel HC420LA, obtain parameters which describe its mechanical properties. This is necessary to determine ...
Added: January 19, 2015
Arutyunov V., Nikitin A., Strekova L. et al., Catalysis Today 2021 No. 379 P. 23-27
Low energy density in agricultural or biotechnological raw materials dictates the need for their local processing. Small-scale agricultural products or waste processing plants can`t profitably use technologies common in large-scale petrochemistry, including the complex and expensive process of steam reforming of biogas into syngas for its subsequent conversion to liquid fuel. The work suggests using ...
Added: October 3, 2022
Savchenko V. I., Nikitin A. V., Zimin Y. S. et al., Chemical Engineering Research and Design 2021 Vol. 175 P. 250-258
Non-catalytic partial oxidation of methane in matrix reformers offers the possibility of producing hydrogen directly at sites of its consumption, in particular from local bioresources and non-traditional fossil hydrocarbons. The kinetics simulation of the process shows that it proceeds in two stages. In the flame zone, in the presence of oxygen, along with CO, H2, ...
Added: October 3, 2022
I. V. Sedov, Arutyunov V. S., Tsvetkov M. V. et al., Eurasian Chemico-Technological Journal 2022 Vol. 24 No. 2 P. 157-163
The possibility of using coalbed methane to produce methanol is assessed. Methanol can be obtained from methane both by direct partial oxidation and from synthesis gas formed through the oxidative conversion of methane. Thermodynamic analysis of coalbed methane conversion was carried out to determine the conditions for obtaining synthesis gas with the ratio [H2 ]/[CO] = ...
Added: October 7, 2022
Гнесин И. Б., Металлы 2022 № 3 С. 65-74
The elemental, phase, and structural state of Nb-Mo-C alloys with equiatomic metal contents and 15, 20, 25, and 30 at % C are studied after electron-beam zone melting. In the alloy containing 15 at %, a fine microstructure, which is typical of eutectic alloys, forms; as the carbon content increases, primary carbide crystals appear in ...
Added: October 29, 2022
М. : [б.и.], 2021
Тематика Трудов конференции охватывает фундаментальные и прикладные вопросы взаимодействия плазмы и ионов с поверхностью - столкновительные процессы, ориентационные эффекты, распыление и рассеяние частиц, структурные повреждения, деградация и улучшение физико-механических свойств материалов при воздействии корпускулярного излучения и др. ...
Added: September 12, 2021
Novikova S., Воропаева Д. Ю., Yaroslavtsev A. B., Неорганические материалы 2022 Т. 58 № 4 С. 351-366
Рассмотрены опубликованные в последнее десятилетие исследования в области создания аккумуляторов на основе систем натрий–сера, работоспособных при температуре окружающей среды
(низкотемпературные натрий-серные аккумуляторы (НСА)). Такие аккумуляторы отличаются от
распространенных в настоящее время литий-ионных или литий-серных аналогов меньшей стоимостью и доступностью исходных материалов. Одной из главных проблем на пути создания низкотемпературных НСА с высокой удельной энергоемкостью и длительным циклированием ...
Added: November 25, 2022
Петрухина Н. Н., Безруков Н. П., Антонов С.В., Журнал прикладной химии 2021 Т. 94 № 3 С. 275-295
Materials-science aspects of the development of color road pavement (color asphalt concretes) and marking are considered. Kinds of binders used as a base for color asphalt concretes are characterized; these include dark petroleum bitumens, colorless polymer binders, and biobinders. The main requirements to colorless binders are formulated. The relationship between the composition and physicochemical, mechanical, ...
Added: January 29, 2023
Bondarenko G.G., Dubinina M. S., Kristya V. I., Technical Physics 2020 Vol. 65 No. 5 P. 826-831
A model of the electric field enhanced thermal (thermo-field) emission of electrons from the metal
cathode substrate into a thin insulating film on its surface is developed. A system of equations for the cathode
surface temperature in the arc discharge and the electric field strength in the film, providing the required discharge
current density, is formulated. It is ...
Added: May 26, 2020
Zhukov A., Bobrova E., Popov I. et al., International Journal for Computational Civil and Structural Engineering 2021 Vol. 17 No. 4 P. 73-82
Abstract. The article discusses ways to solve engineering problems in the study of technological processes using methods of system analysis. The essence of this method is to study the technology as a cybernetic system with an assessment of the" reactions” of this system to external influences formed during an active experiment. At the same time, ...
Added: March 21, 2023
Sorgente D., Palumbo G., Piccininni A. et al., CIRP Journal of Manufacturing Science and Technology 2018 No. 20 P. 29-35
Mechanical performances of titanium biomedical implants manufactured by superplastic forming are strongly related to the process parameters: the thickness distribution along the formed sheet has a key role in the evaluation of post-forming characteristics of the prosthesis. In this work, a finite element model able to reliably predict the thickness distribution after the superplastic forming ...
Added: December 1, 2017
Borovitskaya I. V., Demin A. S., Komolova O. A. et al., Russian Metallurgy (Metally) 2023 Vol. 2023 No. 7 P. 891-898
The influence of pulsed helium ion (HI) and helium plasma (HP) fluxes on an Inconel 718 alloy
fabricated by an additive technology via selective laser melting and subsequent heat treatment is studied. The
structural changes in the surface layer (SL) after irradiation are analyzed for two different modes: soft (at radiation
power density q = 2 × 108 ...
Added: November 14, 2023
Dmitrii Demin, Ivan Zakhariev, Taisia Labutina et al., Journal of Chemical Technology and Metallurgy 2018 Vol. 53 No. 2 P. 380-385
In this study the process of a hot laboratory rolling of a round bar on the flat rolls was studied by laboratory
experiments and numerical modelling in order to evaluate the effect of boundary conditions and simulation techniques
on the model predictions. The computer simulations of rolling process were performed by two different techniques
based on Finite Element ...
Added: July 3, 2018
Ястребинский Р. Н., Bondarenko G., Павленко В. И. et al., Перспективные материалы 2023 № 10 С. 5-16
Представлены экспериментальные исследования ослабления нейтронного и фотонного
излучения ядерного реактора радиационно-защитным металлогидридным композитом,
а также распределение в материале дозовых и пространственно-энергетических
характеристик первичного и вторичного гамма-излучения. Показано, что формирование
мощности дозы гамма-излучения за защитой обусловлено захватными гамма-квантами,
образующимися в начальном слое материала. По результатам реакторных защитных
свойств материала, проведена верификация расчетной модели эксперимента в
двухмерной геометрии методом дискретных ординат по программе DORT. ...
Added: November 22, 2023
Boldyrev K., Романов А., Хаула Е. et al., Journal of the American Ceramic Society 2019 Vol. 102 No. 5 P. 2745-2751
Single crystal of TlCl was doped with NIR photoluminescent univalent bismuth cations by prolonged immersion in liquid bismuth metal. The ion exchange Tl+ + Bi0 ↔ Tl0 + Bi+ at the crystal surface with subsequent Bi+ migration to the bulk are expected to drive the doping process. Contrary with Bi‐doped TlCl crystals, grown by Bridgman method, the ion exchange does ...
Added: February 8, 2019
Kartsev A., Lega P., Orlov A. et al., Nanomaterials 2022 Vol. 12 No. 7 Article 1107
Recently, Ti-Ni based intermetallic alloys with shape memory effect (SME) have attracted much attention as promising functional materials for the development of record small nanomechanical tools, such as nanotweezers, for 3D manipulation of the real nano-objects. The problem of the fundamental restrictions on the minimal size of the nanomechanical device with SME for manipulation is ...
Added: April 29, 2022
Tatiana L. Kulova, Skundin A., Gavrilin I. M. et al., Batteries 2022 Vol. 8 No. 8 Article 98
Nanostructure composites Ge-Co-P with brutto-composition CoGe2P0.1, or CoGe2@GeP were manufactured via electrolysis of aqueous electrolyte. Such composites are able to reversible insertion of lithium and sodium with specific capacities up to 855 and 425 mAh/g, respectively. The main advantage of the composites consists in their excellent cycleability. ...
Added: November 25, 2022
Antropov A., Stegailov V., Journal of Nuclear Materials 2023 Vol. 573 Article 154123
The influence of helium pressure on the mechanisms of diffusion of the He-filled nanobubbles in fcc Al is investigated by the classical molecular dynamics. It is shown that at pressures <20 kbar gas suppresses self-diffusion, while the concentration of adatoms, rather than their mobility, plays a key role. However, as the pressure increases to values at which ...
Added: February 1, 2023
Ястребинский Р. Н., Bondarenko G., Карнаухов А. А., Перспективные материалы 2021 № 9 С. 24-33
В работе представлены экспериментальные исследования радиационно-защитных свойств материала на основе модифицированного гидрида титана по отношению к гамма- и нейтронному излучению точечных радиоизотопных источников в барьерной и сплошной геометриях защиты. Оценка амплитудного распределения гамма-излучения по толщине материала защиты показала значительное снижение мощности эквивалентной дозы гамма излучения в энергетическом интервале 180-250 кэВ, что обусловлено эффектом комптоновского рассеивания. ...
Added: August 25, 2021
Bondarenko G., Кристя В. И., Фишер М. Р., Поверхность. Рентгеновские, синхротронные и нейтронные исследования 2023 № 1 С. 92-98
Сформулирована модель тлеющего газового разряда при наличии на катоде тонкой диэлектрической пленки. В ней принимается во внимание, что при протекании разрядного тока вследствие бомбардировки катода ионами на пленке накапливаются положительные заряды, создающие в ней
сильное электрическое поле. В результате начинается полевая эмиссия электронов из металлической подложки катода в диэлектрик, которая при повышении его температуры переходит в ...
Added: March 27, 2023
Sorokin K., IEEE NW Russia Young Researchers in Electrical and Electronic Engineering Conference 2016 P. 691-693
a brief description of the principles of functioning of the device creating high intensity acoustic fields in presented. The processes of forming the cavitation bubbles are explained, and also a reasons, why the cavitationg liquid might be considered as a separate medium. The article contains the results of experimental researches about the energy dissipation in ...
Added: October 15, 2021
Margarita R. Chetyrkina, Cvjetinovic J., Fedorov F. et al., ACS Photonics 2022 Vol. 9 No. 10 P. 3429-3439
Optoacoustic (photoacoustic) imaging has gained tremendous attention in research and in clinical practice as a point-of-care system for noninvasive, fast, and safe tests. The first optoacoustic (OA) tomograph has recently passed the Food and Drug Administration (FDA) approval stage for clinical applications aimed at early breast cancer diagnostics. Furthermore, a broad application of OA imaging ...
Added: September 11, 2023