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Journal Articles Journal of Nuclear Materials Year : 2020

TEM characterisation of helium platelets in implanted uranium dioxide

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Abstract

Polycrystalline UO2 discs were implanted with 500 keV helium ions at different temperatures (200, 400 and 600 °C) and fluences (1 and 3 × 1016 at cm−2), and further characterised by transmission electron microscopy (TEM). Examinations performed on the more concentrated sample implanted at 600 °C allowed us to observe platelets for the first time in the UO2 material in planes parallel to . A complete study was undertaken in grains oriented along <1 0 0>, <1 1 0> and <1 1 1> directions to determine {1 1 1} variant equivalence on platelet formation. Their features like density and size have been characterised with an appropriate statistic.
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Dates and versions

cea-02535031 , version 1 (07-04-2020)

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Attribution - NonCommercial - CC BY 4.0

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Cite

Adrien Michel, Gaëlle Carlot, Claire Onofri, Catherine Sabathier, Martiane Cabié, et al.. TEM characterisation of helium platelets in implanted uranium dioxide. Journal of Nuclear Materials, 2020, 528, pp.151832. ⟨10.1016/j.jnucmat.2019.151832⟩. ⟨cea-02535031⟩
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