A comparative study of oxide scales grown on stainless steel and nickel-based superalloys in ultra-high temperature supercritical water at 800 degrees C

作者：Behnamian Yashar^*; Mostafaei Amir; Kohandehghan Alireza; Amirkhiz Babak Shalchi; Serate Dominic; Sun Yifei; Liu Subiao; Aghaie Ermia; Zeng Yimin; Chmielus Markus; Zheng Wenyue; Guzonas David; Chen Weixing^*; Luo Jing Li^*

来源：Corrosion Science, 2016, 106: 188-207.

DOI：10.1016/j.corsci.2016.02.004

• Stainless steel
• Nickel
• SEM
• TEM
• High temperature corrosion
• Oxidation

This study investigates the oxidation behavior of several stainless steels and nickel-based superalloys exposed to supercritical water at 800 degrees C for 12h. Characterization of the resulting oxide layers were conducted using weight change measurements, X-ray diffraction, scanning/transmission electron microscopy, and energy dispersive spectroscopy. Although the exposure time is only 12 h, the thickness of the oxide layers formed was as high as 1 mu m, comprising different spinel structures. The influence of alloying elements such as Al, Nb, Mo, Mn and Ti on the corrosion behavior is investigated and possible corrosion mechanisms for each candidate alloy are discussed.

• 出版日期2016-5