Thermal shock test of neutron irradiated carbon fiber reinforced carbon composites with OHBIS

Thermal shock tests of neutron irradiated carbon fiber reinforced carbon co mposites (CFCs) were started with OHBIS to study the neutron irradiation ef fects on the erosion behavior. Specimens were one directional, two directio nal and three directional CFCs. These specimens were irradiated with a tota l neutron fluence of 0.3-0.4 dpa at 556-594 K using Japan Materials Testing Reactor. Heat load conditions were 20 MJ.m(-2) (800 MW.m(-2)x25 ms and 500 MW.m(-2)x40 ms). It was clear that the weight loss of the neutron irradiat ed specimens increased with neutron fluence, and that the erosion area of t he neutron irradiated specimens were broader than that of the un-irradiated specimens.