High-temperature corrosion of helium ion-irradiated Ni-based alloy in fluoride molten salt

作者：Zhu Hanliang^*; Holmes Rohan; Hanley Tracey; Davis Joel; Short Ken; Edwards Lyndon

来源：Corrosion Science, 2015, 91: 1-6.

DOI：10.1016/j.corsci.2014.11.013

• Nickel
• TEM
• High temperature corrosion
• Reactor conditions

A comparison of the effect of helium-ion-radiation damage on a Ni-Mo-Cr-Fe alloy exposed to high-temperature (750 degrees C) corrosion in eutectic LiF-NaF-KF molten salt has been made. Microstructural examination showed that both the corroded-only and irradiated and corroded samples exhibit the characteristics of intergranular corrosion. However, helium ion irradiation introduces defects such as helium bubbles and cavities into the microstructure, greatly increasing intragranular corrosion of the irradiated sample. The thickness of the remaining corrosion zone for the irradiated sample was much greater than that for the unirradiated sample.

• 出版日期2015-2