US' Approach for Pressing China's Economic System Reform and its Effects on World Trade

The oxidation behavior of nickel‐based alloy Inconel 617 in supercritical water

“…[ 13,18,22 ] For exposure test of Alloy 690 in 450°C–550°C SCW, Cr oxidized to form a Cr‐rich compact inner layer via solid‐state growth mechanism while the growth of Ni‐rich outer layer was controlled by metal dissolution/oxide precipitation. [ 17 ] Chang et al [ 6 ] found that the oxides formed on Alloy 625 included Ni(Cr,Fe) 2 O 4 and Cr 2 O 3 . The oxidation rate‐controlling step depended on the diffusion of cations.…”

“…Nickel‐based alloys have been considered as candidate materials for 700°C power plants because of their good corrosion resistance. [ 2–9 ] An oxygen isotope tracer experiment of Inconel 740 has been performed to explore the mechanism for the formation of the oxide films. [ 2 ] The result indicates that the oxide film growth proceeded by outward chromium transport.…”

“…The oxidation rate of alloy 625 is lower than that of alloy 825. Chang et al [ 6 ] has investigated the influence of dissolved oxygen content on the corrosive behavior of alloy 625 in SCW. It has been found that oxygen content has an important impact on the composition and structure of oxides.…”