Ionizing vs collisional radiation damage in materials: Separated, competing, and synergistic effects in Ti₃SiC₂

Hanson, William A, Patel, Maulik K ORCID: 0000-0002-3214-5752, Crespillo, Miguel L, Zhang, Fuxiang, Zinkle, Steven J, Zhang, Yanwen and Weber, William J (2019) Ionizing vs collisional radiation damage in materials: Separated, competing, and synergistic effects in Ti₃SiC₂. ACTA MATERIALIA, 173. pp. 195-205.

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Abstract

Comparison between intense radiation environments present in nuclear reactors and charged particle beams is necessary for evaluating next generation fission and fusion reactor materials. However, these two irradiation environments encompass different proportions of ionizing and collisional phenomena, so exploring the different energy loss pathways is needed for appropriate analysis. Using the candidate Mn+1AXn phase, Ti3SiC2, as a test case, this work separates the effects of electronic and nuclear energy loss during ion irradiation, through a combination of 4 MeV Au, 17 MeV Pt, and 14 MeV Cl ion irradiations to examine the effects independently and systematically recombine them. Nuclear energy loss (elastic collisions) is found to be primarily responsible for the formation of a face-centered-cubic phase with anti-site defects, while intense electronic energy loss (ionization) exacerbates the effect and increases lattice strain. Further, these dissipation pathways are found to be competing or synergistic depending on their ionization and collisional ratio.

Item Type:	Article
Uncontrolled Keywords:	Ion irradiation damage, Ti3SiC2 MAX phase, X-ray diffraction (XRD), Transmission electron microscopy (TEM), Electronic and nuclear energy loss synergy
Depositing User:	Symplectic Admin
Date Deposited:	07 May 2019 12:18
Last Modified:	13 Oct 2023 02:01
DOI:	10.1016/j.actamat.2019.05.015
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3040081