The irradiation response of ZrC ceramics under 10 MeV Au3+ ion irradiation at 800 ºC
作者： Raul Florez , Miguel L. Crespillo , Xiaoqing He , Tommi A. White , Gregory Hilmas
DOI: 10.1016/J.JEURCERAMSOC.2020.01.025
关键词: Analytical chemistry 、 Transmission electron microscopy 、 Materials science 、 Microstructure 、 Oxygen 、 Raman spectroscopy 、 Lattice constant 、 Ion 、 Irradiation 、 Dislocation
摘要: Abstract The microstructural evolution was characterized for ZrC ceramics irradiated with 10 MeV Au3+ ions at 800 °C. Post-irradiation examination showed that did not amorphize doses up to 30 displacement per atoms (dpa). Concurrent oxidation of found occur during ion irradiation. Coarsening the defective microstructure, as a function dose, revealed by transmission electron microscopy analysis. Black dot defects were observed low (0.5 dpa), and tangled dislocation networks formed 5 dpa above. Diffraction analysis change in defect structure occurred close ∼2.5 dpa. lattice parameter dose indicated uptake adventitious oxygen could specimens high doses. Raman spectroscopy an increase non-stochiometry after irradiaton. This work identified specific relationships between microstructure irradiation, revealing mechanisms damage production ZrCx ceramics.
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