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Metals 2019, 9(3), 294; https://doi.org/10.3390/met9030294

Corrosion Behavior of 2205 Duplex Stainless Steels in HCl Solution Containing Sulfide

1
School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
2
School of Material Science and Engineering, Southwest Petroleum University, Chengdu 610500, China
3
Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing 100083, China
4
MATEIS UMR CNRS 5510, INSA Lyon, Université de Lyon, 69621 Villeurbanne CEDEX, France
*
Author to whom correspondence should be addressed.
Received: 26 December 2018 / Revised: 24 February 2019 / Accepted: 26 February 2019 / Published: 5 March 2019
(This article belongs to the Special Issue The Electrochemical and Corrosion Behaviour of Structural Materials)
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Abstract

The corrosion behavior of 2205 DSS in HCl solutions containing sulfide were investigated using mass loss test, electrochemical measurements, scanning Kelvin probe, scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). The results showed that Na2S had significant effect on corrosion behavior of 2205 DSS in dilute HCl solutions. Slight Na2S can prevent the passive film from localized attacking of Cl in HCl solution with a concentration lower than 0.1 mol/L. However, when the concentration of HCl solution higher than 0.137 mol/L, Na2S addition will tremendously promote corrosion. The intergranular corrosion combined surficial active dissolution of 2205 DSS could happen in HCl + Na2S solution. View Full-Text
Keywords: duplex stainless steel; hydrochloric acid; sulfide; EIS; XPS duplex stainless steel; hydrochloric acid; sulfide; EIS; XPS
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Tang, J.; Yang, X.; Wang, Y.; Wang, H.; Xiao, Y.; Apreutesei, M.; Nie, Z.; Normand, B. Corrosion Behavior of 2205 Duplex Stainless Steels in HCl Solution Containing Sulfide. Metals 2019, 9, 294.

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