Qi, M.-B.; Lian, P.-F.; Li, P.-D.; Zhang, H.-Y.; Cheng, J.-X.; Wang, Q.-B.; Tang, Z.-F.; Pan, T.J.; Song, J.-L.; Liu, Z.-J. Diffusion Behavior of Iodine in the Micro/Nano-Porous Graphite for Nuclear Reactor at High Temperature. C2023, 9, 81.
Qi, M.-B.; Lian, P.-F.; Li, P.-D.; Zhang, H.-Y.; Cheng, J.-X.; Wang, Q.-B.; Tang, Z.-F.; Pan, T.J.; Song, J.-L.; Liu, Z.-J. Diffusion Behavior of Iodine in the Micro/Nano-Porous Graphite for Nuclear Reactor at High Temperature. C 2023, 9, 81.
Qi, M.-B.; Lian, P.-F.; Li, P.-D.; Zhang, H.-Y.; Cheng, J.-X.; Wang, Q.-B.; Tang, Z.-F.; Pan, T.J.; Song, J.-L.; Liu, Z.-J. Diffusion Behavior of Iodine in the Micro/Nano-Porous Graphite for Nuclear Reactor at High Temperature. C2023, 9, 81.
Qi, M.-B.; Lian, P.-F.; Li, P.-D.; Zhang, H.-Y.; Cheng, J.-X.; Wang, Q.-B.; Tang, Z.-F.; Pan, T.J.; Song, J.-L.; Liu, Z.-J. Diffusion Behavior of Iodine in the Micro/Nano-Porous Graphite for Nuclear Reactor at High Temperature. C 2023, 9, 81.
Abstract
Using analysis methods such as Rutherford backscattering Spectrometry, scanning electron microscopy, X-ray diffraction, and Raman spectroscopy, the diffusion behavior of iodine in micro/nano-porous graphite under high-temperature conditions was studied. The results indicate that iodine diffusion leads to the contraction of graphite microcrystals, a decrease in interlayer spacing, and an increase in defect density, resulting in a reduction in microcrystal size. Upon diffusion of iodine out of iodine-loaded graphite, the microcrystal size of the graphite increases, the interlayer spacing appears to return to the initial state, and the defect density decreases. By comparing the iodine diffusion performance of nanoporous graphite G400 and G450 with microporous graphite G500, it was determined that nanoporous graphite exhibits better inhibition of iodine diffusion compared to microporous graphite. Studying the diffusion behavior of iodine in micro/nano-porous graphite has significant academic significance and engineering value for the screening, design, and performance optimization of nuclear graphite.
Chemistry and Materials Science, Materials Science and Technology
Copyright:
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