In-situ TEM ion irradiation investigations on U3Si2 at LWR temperatures

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Abstract

The radiation-induced amorphization of U3Si2 was investigated by in-situ transmission electron microscopy using 1 MeV Kr ion irradiation. Both arc-melted and sintered U3Si2 specimens were irradiated at room temperature to confirm the similarity in their responses to radiation. The sintered specimens were then irradiated at 350 °C and 550 °C up to 7.2 × 1015 ions/cm2 to examine their amorphization behavior under light water reactor (LWR) conditions. U3Si2 remains crystalline under irradiation at LWR temperatures. Oxidation of the material was observed at high irradiation doses.

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Miao, Y., Harp, J., Mo, K., Bhattacharya, S., Baldo, P., & Yacout, A. M. (2017). In-situ TEM ion irradiation investigations on U3Si2 at LWR temperatures. Journal of Nuclear Materials, 484, 168–173. https://doi.org/10.1016/j.jnucmat.2016.11.020

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