dc.contributor.author | Zvejnieks, Guntars | |
dc.contributor.author | Anspoks, Andris | |
dc.contributor.author | Kotomin, Eugene A. | |
dc.contributor.author | Kuzovkov, Vladimir N. | |
dc.date.accessioned | 2020-08-19T17:54:18Z | |
dc.date.available | 2020-08-19T17:54:18Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 0168-583X | |
dc.identifier.uri | https://dspace.lu.lv/dspace/handle/7/52441 | |
dc.description | This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 under grant agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. | en_US |
dc.description.abstract | As known, Y2O3 nano-clusters considerably increase radiation resistance of reactor construction materials. To model the nano-cluster formation kinetics, we propose the simplest possible mathematical model and perform kinetic Monte Carlo (KMC) simulations. We extended the KMC simulated results to the experimentally relevant times using autoregressive integrated moving average forecasting. Within the model, we have studied prototypical attractive interaction energies and particle concentrations, and compared the simulations with experiments. We have observed the standard Lifshitz-Slyozov-Wagner (LSW) theory, predicting the average cluster radius growth with time, , with in the long-time limit, for weak (0.1 eV) mutual particle attraction. However, the respective cluster growth rates in these KMC simulations are overestimated compared to the experiments. The best agreement with experiment is obtained for a medium (0.3 eV) and strong (0.5 eV) attractions, when nano-cluster formation occurs during intermediate asymptotic time scale, where power order p ranges from 5 to 7.6 depending on interaction, without reaching actually the LSW long-time limit. Such a stronger interaction leads also to a more compact {110}–faceted nano-clusters. | en_US |
dc.description.sponsorship | EUROfusion Consortium; Euratom research and training programme 2014-2018 under grant agreement No 633053; Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART² | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier B.V. | en_US |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/739508/EU/Centre of Advanced Material Research and Technology Transfer/CAMART² | en_US |
dc.relation.ispartofseries | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms;434 | |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Research Subject Categories::NATURAL SCIENCES:Physics | en_US |
dc.subject | Y2O3 nano-clusters | en_US |
dc.subject | Oxide dispersion strengthened (ODS) steels | en_US |
dc.subject | Coarsening | en_US |
dc.subject | Ostwald ripening | en_US |
dc.subject | Kinetic Monte Carlo | en_US |
dc.title | Kinetic Monte Carlo modeling of Y2O3 nano-cluster formation in radiation resistant matrices | en_US |
dc.type | info:eu-repo/semantics/article | en_US |
dc.identifier.doi | 10.1016/j.nimb.2018.08.005 | |