Cover page describe the Typical fracture surface of nuclear graphite blocks after irradiation (cracks occur during reactor operation). This picture Summarize the Fractographic studies of GR-280 nuclear graphite after irradiation up to neutron fluence above the turnaround dose (with a decrease in of the mechanical properties to the values close to the initial one after primary radiation-induced increase) showed along with the presence of transcrystalline fracture, appearance of intercrystalline fracture regions along the “filler-binder” type boundaries.
Structure and properties degradation of the nuclear graphite under neutron irradiation
Boris A. Gurovich, Denis A. Kuleshov*, Dmitriy A. Maltsev, Oleg K. Chugunov, Alexey S. Frolov, Yaroslav I. Shtrombakh
National Research Center “Kurchatov Institute”, Akademika Kurchatova pl., Moscow, 123182, Russian Federation
Adv. Mater. Lett., 2018, 9 (11), pp 781-788
Publication Date (Web): Jul 24, 2018
Copyright © 2018 VBRI Press
The operation of nuclear graphite in graphite-moderated reactors is accompanied by its properties degradation under the influence of neutron irradiation, which limits their service life. In this connection, it is of interest to identify the mechanisms that determine the properties degradation of graphite materials at various operational stages of operating RBMK power reactors.
Nuclear graphite, neutron irradiation, power reactor, graphite, RBMK, electron microscopy, fractographic analysis, SEM, TEM.