Effect of dissolved hydrogen on corrosion of Inconel Alloy 600 in high temperature hydrogenated water
作者： Qunjia Peng , Juan Hou , Kazuhiko Sakaguchi , Yoichi Takeda , Tetsuo Shoji
DOI: 10.1016/J.ELECTACTA.2011.07.032
关键词: Stress corrosion cracking 、 Alloy 、 Metallurgy 、 Oxide 、 Microstructure 、 Aqueous solution 、 Chemical engineering 、 Corrosion 、 Nickel 、 Materials science 、 Dissolution
摘要: Electronic property, microstructure and chemical composition of oxide films formed on Alloy 600 in high temperature water with various dissolved hydrogen (DH) levels that allow the Ni/NiO phase transition to occur were studied by employing electrochemical exposure experiments. The results showed increasing DH decreased thickness ionic defect transport resistance film, conjunction increase Cr- but decrease Ni-concentrations film. Further, it was found weakened stability protectability Ni spinet effect attributed oxidative dissolution process following reduction H(2), indicating selective plays an important role corrosion Ni-base alloys hydrogenated water. Implications this work for mechanism stress cracking discussed. (C) 2011 Elsevier Ltd. All rights reserved.
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