Structural Changes of Ti₃SiC₂ Induced by Helium Irradiation with Different Doses
In this study, the microstructure changes of Ti₃SiC₂ MAX phase material induced by helium irradiation and evolution with a sequence of different helium irradiation doses of 5 x 1015, 1 x 1016, 5 x 1016 and 1 x 1017 cm-2 at room temperature (RT) were characterized with grazing incidence X-ray diffraction (GIXRD) and Raman spectra analysis. The irradiation damage process of Ti₃SiC₂ can be roughly divided into three stages according to the level of helium irradiation dose: (1) for a low damage dose, only crystal and damaged Ti₃SiC₂ exit; (2) at a higher irradiation dose, there is some damaged TiC phase additionally; (3) with a much higher irradiation dose, crystal TiC phase could be found inside the samples as well. Moreover, the 450 °C 5 x 1016 cm-2 helium irradiation on Ti₃SiC₂ has confirmed that Ti₃SiC₂ has much higher irradiation tolerance at higher temperature, which implies that Ti₃SiC₂ could be a potential future structural and fuel coating material working at high temperature environments.
H. Zhang et al., "Structural Changes of Ti₃SiC₂ Induced by Helium Irradiation with Different Doses," Applied Surface Science, vol. 434, pp. 1210 - 1216, Elsevier B.V., Mar 2018.
The definitive version is available at https://doi.org/10.1016/j.apsusc.2017.11.170
Materials Science and Engineering
Keywords and Phrases
GIXRD; He Irradiation; Phase Transformation; Ti3SiC2
International Standard Serial Number (ISSN)
Article - Journal
© 2018 Elsevier B.V., All rights reserved.
01 Mar 2018