High-temperature corrosion of Fe-Ni-based alloy HR6W, Ni-based alloys Haynes 282 and Inconel 740 in supercritical water at 450 °C and 25 MPa
作者： Zefeng Jing , Donghai Xu , Shuzhong Wang , Shuwei Guo , Guanyu Jiang
DOI: 10.1016/J.JALLCOM.2021.160350
关键词:
摘要: Abstract In this work, Fe-Ni-based alloy HR6W, Ni-based alloys Haynes 282 and Inconel 740 were investigated in supercritical water at 450 °C 25 MPa for 30–200 h. all showed corrosion weight gain the whole exposure duration oxidation kinetics follow parabolic law. HR6W samples displayed lower better resistance under experimental conditions. A layer composed of network-shaped oxides was formed on surface sample. The height oxide particles sample is not consistent enough after 200 h, there large amount vacancies among clusters, which increases risk substrate destruction. dominant phases [FeCr2O4, NiFe2O4], [Fe3O4, NiFe2O4 Cr2O3], [Fe2O3, Fe3O4], respectively.
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