Oxidation behavior of the T91 ferritic/martensitic steel and 304 austenitic stainless steel in supercritical water

被引：1
|
作者：
Wu, Jing [1 ]
An, Xuguang [2 ]
Wang, Hui [2 ]
机构：
[1] Yibin Univ, Fac Mat & Chem Engn, Yibin, Peoples R China
[2] Cheng Du Univ, Inst Adv Study, Interdisciplinary Mat Res Ctr, Chengdu, Peoples R China
来源：
ANTI-CORROSION METHODS AND MATERIALS | 2023年 / 70卷 / 03期
关键词：
Oxidation; Corrosion mechanism; 304 austenitic stainless steel; T91; ferritic; martensitic steel; FERRITIC-MARTENSITIC STEEL; MECHANICAL-PROPERTIES; EVOLUTION; STABILITY; CORROSION;
D O I：
10.1108/ACMM-01-2023-2746
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
PurposeThis study aims to report the oxidation behaviors of the T91 ferritic/martensitic steel (T91 steel) and 304 austenitic stainless steel (304 steel) in supercritical water (SCW) at 600 degrees C. Design/methodology/approachThe microstructure, elemental distribution and phase structure of the oxidation layers derived from the corrosion of the T91 steel and 304 steel were analyzed by scanning electron microscopy, Oxford Instrument X-ray spectroscopy, electron scattered diffraction and transmission electron microscopy. FindingsThe oxidation layers on the T91 steel and 304 steel have duplex structure. The two steels all suffer internal oxidation, and the phase of the internal oxidation layers are indexed as Fe-Cr spinel, although their morphologies are different. The formation of a continuous Cr-rich layer is not detected because of the relatively low Cr content of the steels, which is attributed to the corrosion property. Originality/valueThe accelerated corrosion and corrosion mechanism of the T91 steel and 304 steel with low Cr occurring in SCW at 600 degrees C was clarified.
引用
收藏
页码：108 / 111
页数：4
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