University of Science and Technology of China (USTC) - School of Materials Science and Engineering; Chinese Academy of Sciences (CAS) - Key Laboratory of Nuclear Materials and Safety Assessment
University of Science and Technology of China (USTC) - School of Materials Science and Engineering
Abstract
The corrosion behavior of 304LN austenitic stainless steel in supercritical CO2 at 650 ℃ was investigated. The results show that 304LN follows Wagner’s law kinetics, forming a protective oxide film consisting of SiO2, (Cr, Mn)3O4, and Cr2O3 from the inner to outer layers. A shallow carburization depth of approximately 130 nm indicates excellent resistance to carburization. The roles of key elements in 18/8 austenitic stainless steel represented by 304LN, such as Cr, Ni, and Si, were analyzed, highlighting their contributions to anti-carburization performance and corrosion resistance under harsh conditions.
Keywords: 304LN, Supercritical carbon dioxide, Corrosion, TEM, Carburization
Li, Nanfu and Wu, Bin and Wang, Jiazhen and Shu, Ming and Zhang, Yusheng and Li, Yifeng and Wang, Jianqiu and Han, En-Hou and Ming, Hongliang, Corrosion Behavior of 304ln Stainless Steel in High-Temperature Supercritical Carbon Dioxide: Oxidation and Carburization. Available at SSRN: https://ssrn.com/abstract=5077435 or http://dx.doi.org/10.2139/ssrn.5077435
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