Corrosion Behavior of Austenitic Steel 304 in Nearcritical Aqueous Solutions

DOI

10.2991/isesce-15.2015.38How to use a DOI?

Keywords

Austenitic steel, Nearcritical Aqueous Solutions, Corrosion, Chlorides

Abstract

In this paper, the corrosion characteristics of Austenitic steel 304 in nearcritical aqueous solutions containing 1000 ppm chlorides, and chemical oxygen demand (COD) of 2000 ppm, was investigated. The samples surface were examined using scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The results indicated that the most serious corrosion issues occurred at 360 among three temperatures: 350 , 360 and 400 . The water density and ion products play key roles in influencing the corrosion resistance of alloys under nearcritical aqueous solutions, while effects of temperatures on the stability of the scales are relatively minor. The corrosion resistance of 304 Steel in alkalescent solutions was better than that in other solutions. Generally, 7.5 - 9 was an appropriate pH range.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yanhui Li
AU  - Shuzhong Wang
AU  - Laisheng Wang
AU  - Pengfei Yu
AU  - Jianqiao Yang
PY  - 2015/12
DA  - 2015/12
TI  - Corrosion Behavior of Austenitic Steel 304 in Nearcritical Aqueous Solutions
BT  - Proceedings of the 2015 International Symposium on Energy Science and Chemical Engineering
PB  - Atlantis Press
SP  - 189
EP  - 192
SN  - 2352-5401
UR  - https://doi.org/10.2991/isesce-15.2015.38
DO  - 10.2991/isesce-15.2015.38
ID  - Li2015/12
ER  -