Corrosion behavior of 304 stainless steel in supercritical water

被引：1

作者：

Zhang, Xiaohui ^{[1
]}

Fan, Jingjing ^{[1
]}

Krolczyk, Grzegorz M. ^{[2
]}

Zhang, Xiaoyu ^{[1
]}

Ren, Lu ^{[3
]}

Gupta, Munish Kumar ^{[2
,4
]}

Chen, Siyu ^{[1
]}

Li, Zhixiong ^{[2
]}

机构：

[1] Xuzhou Univ Technol, Sch Elect & Control Engn, Xuzhou 221018, Peoples R China

[2] Opole Univ Technol, Fac Mech Engn, PL-45758 Opole, Poland

[3] Ningbo Univ, Fac Mech Engn & Mech, Ningbo 315211, Peoples R China

[4] Graph Era Deemed Univ, Dept Mech Engn, Dehra Dun, Uttarakhand, India

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2024年 / 206卷

基金：

中国国家自然科学基金;

关键词：

304 stainless steel; Corrosion behavior; Oxide layer; Supercritical water; RESISTANCE; STEEL; SALT;

D O I：

10.1016/j.supflu.2023.106158

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Supercritical water (SCW) has strong reactivity and the ability to fuse non-polar substances, but it requires higher corrosion resistance of structural materials. To select reliable candidate materials for a supercritical water system, this study investigated the corrosion behavior of 304 stainless steel (304 SS) in supercritical water (798 K/ 24 MPa). After soaking 304 SS in supercritical water for 200 h, the oxidation kinetics, surface morphology, and element diffusion were studied by weight measurement, scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersion spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The surface of 304 SS shows an isolated and discontinuous oxidation deposition. It is determined that the oxide layer is a single layer, mainly composed of Fe-Cr-rich spinel, with a small amount of magnetite attached to the surface of the oxide layer. Besides, the oxidation mechanism was also studied since some pores were found on the surface due to pitting.

引用

页数：11

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