b'Figure 4. TEM bright field micrograph of a SiC sample implanted with 7.5 MeV Si2+ after 24 h in-situ irradiation-corrosion test in pure water with 200 ppb dissolved oxygen, (a) hydrothermal corrosion region; (b) hydrothermal corrosion with a low level of radiolysis products present; (c) and (d) hydrothermal corrosion under active proton irradiation, with a low and high level of radiolysis products, respectively64 2022|AFC ACCOMPLISHMENTS'