DOE OSTI · 3007529
Radiation-induced vacancy injection in heterogeneous multiphase materials
Abstract
Understanding the synergy between corrosion and defect dynamics is a key consideration in the development of advanced materials for extreme environments. Here, we reveal a surprising phenomenon for the transport of point defects induced by irradiation in a heterogeneous multiphase structure of a metal and an oxide, similar to that formed under metal corrosion that takes place in most environments. Despite the confinement of the produced damage within the oxide, vacancies were injected into the unirradiated metal and coarsened with dose. Furthermore, the results show that the nature of the oxide layer dictates the defect evolution in the metal layer. This work reveals an interesting mechanism for point defect interactions in multiphase materials, with broad implications in many fields, while also emphasizing the complex coupling between corrosion and irradiation. Corrosion leads to the formation of multiphase materials, while irradiation enhances diffusion within the heterogeneous phases, which can impact corrosion rates.
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Selim, Farida A. [Arizona State University, Tempe, AZ (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000183673785), Derby, Benjamin Kyle [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT)] (ORCID:0000000346924615), Mills, Sean H. [University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Molecular Foundry], Liedke, Maciej O. [Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Germany)], Agarwal, Sahil [Bowling Green State University, OH (United States)], Butterling, Maik [Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Germany)], Jones, Adric C.L. [Arizona State University, Tempe, AZ (United States)], Chung, Thai Hang [Arizona State University, Tempe, AZ (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000337636398), Kim, Hyosim [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000274731530), Chancey, Matthew [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)], Wang, Yongqiang [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000229385640), Li, Nan [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT)] (ORCID:0000000282489027), Hirschmann, Eric [Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Germany)], Attallah, Ahmed G. [Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Germany)], Wagner, Andreas [Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Germany)], Minor, Andrew M. [University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Molecular Foundry], Uberuaga, Blas P. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000169346219). 2025-12-05. Radiation-induced vacancy injection in heterogeneous multiphase materials. https://doi.org/10.1016/j.xcrp.2025.102989
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