Corrosion Science ( IF 7.4 ) Pub Date : 2021-09-16 , DOI: 10.1016/j.corsci.2021.109848 Zhongliang Zhu 1 , Yuyang Li 1 , Chenhao Ma 1 , Xueying Liu 1 , Guangkui Liu 2 , Shuo Wang 3 , Hong Xu 1 , Naiqiang Zhang 1
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The corrosion tests of Inconel 740 H in supercritical water were carried out at 600–700 °C and 25 MPa. The weight gain elevated with the rise in exposure time and temperature. The oxidation kinetics follows parabolic law in all cases. The temperature has an enhanced impact on oxide phase composition. Cr2O3 was the major oxide phase and the oxides containing Ti, Ni Co, Fe or Nb were also detected at different temperatures. A marked experiment was performed in H216O/16O2 and subsequently in H216O/18O2. The oxygen isotope profile showed that oxidation proceeded by outward chromium transport. The related mechanism was discussed.
中文翻译：
镍基合金Inconel 740 H在超临界水中的腐蚀行为
Inconel 740 H 在超临界水中的腐蚀试验在 600-700 °C 和 25 MPa 下进行。体重增加随着暴露时间和温度的增加而增加。在所有情况下，氧化动力学都遵循抛物线定律。温度对氧化物相组成具有增强的影响。Cr 2 O 3是主要的氧化物相，在不同温度下也检测到含有Ti、Ni Co、Fe或Nb的氧化物。在 H 2 16 O/ 16 O 2和随后在 H 2 16 O/ 18 O 2 中进行了显着的实验. 氧同位素分布表明氧化是通过向外的铬传输进行的。讨论了相关机制。
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