The effects of dissolved hydrogen on the corrosion behavior of Alloy 182 in simulated primary water

• DOI: 10.1016/j.corsci.2015.04.021
• Publication Date: 2015-05-02T19:08:52Z
• Authors: Jian Xu; Tetsuo Shoji; Changheui Jang
• Keywords: Non-blocking I/O

Abstract The effects of dissolved hydrogen (DH) on the corrosion behavior of Alloy 182 in high temperature (320 °C) water were studied using in situ electrochemical measurements and ex situ surface analyses. The film resistance and thickness increased with decreasing DH. Under conditions of DH = 50 cm3/kg and 30 cm3/kg, the oxide film was very thin and predominantly consisted of Cr3+. At DH = 5 cm3/kg, the oxide film grew thicker, and the outer part consisted of NiO and spinel, with Cr3+ primarily located in the inner part. The underlying mechanism of stress corrosion cracking (SCC) susceptibility was considered.