Neutron induced dimensional changes in carbon materials at high temperatures and high damage doses

Structure of Carbon Materials Explored by Local Transmission Electron Microscopy and Global Powder Diffraction Probes

“…When synchrotron or neutron sources are used, the final diffraction intensities are averaged over several scans that allow checking for structural changes of the investigated sample during radiation exposition. The irradiation damages were detected only under high radiation doses [122,123] which are not applied for diffraction studies. The use of X-ray free electron lasers can in principle introduce structural changes [124], and in such a case special care should be taken in order to avoid misinterpretation of the results.…”

AGR-5/6/7 Irradiation Disassembly and Metrology First Look

“…However, there are notable differences in the properties of the compacts from these campaigns (Table 5) that complicate comparisons between the campaigns. For pure graphite, the turnaround fluence decreases with increasing irradiation temperature in general, but the different grades of graphite could behave differently (Bonal et al 1994, Burchell and Snead 2007, Mohanty and Majumdar 2011, Marsden et al 2016, Heijna, de Groot and Vreeling 2017. Fuel compacts are composites made of fuel particles, graphite flake, and amorphous carbon; thus, their patterns of irradiation-induced dimensional change may vary among themselves as well as when compared to pure graphites.…”

Proposal of the Prediction Method Using a Competing Risk Model on the Bending Strength of 2D-C/C Composites

“…Due to high temperature resistivity on the strength, carbon fiber reinforced carbon matrix composites (C/C composites) are thought to be an attractive material in a nuclear engineering field, e. g. the application to control rod and so on in a high temperature gas-cooled reactor (HTGR) [1][2][3][4][5][6] as well as plasma facing components in a fusion reactor [7][8][9][10][11][12][13][14].…”