Investigation of the deterioration of passive films in H2S-containing solutionsReport as inadecuate




Investigation of the deterioration of passive films in H2S-containing solutions - Download this document for free, or read online. Document in PDF available to download.

International Journal of Minerals, Metallurgy, and Materials

, Volume 24, Issue 8, pp 943–953

First Online: 29 July 2017Received: 28 December 2016Revised: 24 February 2017Accepted: 27 February 2017

Abstract

The effect of H2S on the corrosion behavior of 316L stainless steel was investigated using electrochemical methods by changing the gas condition from CO2 to H2S and then back to CO2. The presence of H2S showed an acceleration effect on the corrosion of 316L stainless steel in comparison with CO2. The acceleration effect remained even after the complete removal of H2S by CO2, indicating that the passive film was irreversibly damaged. X-ray photoelectron spectroscopy XPS analysis indicated that the passive film was composed of Cr2O3, Fe2O3, and FeS2 after being immersed in H2S-containing solutions. The semiconducting property of the passive film was then investigated by using the Mott–Schottky approach. The presence of sulfides resulted in higher acceptor and donor densities and thus was responsible for the deterioration of passive films.

Keywordsstainless steel passive films hydrogen sulfide corrosion This article is published with open access at link.springer.com

Download to read the full article text



Author: Zhu Wang - Lei Zhang - Xian Tang - Zhao-yang Cui - Jun-peng Xue - Min-xu Lu

Source: https://link.springer.com/



DOWNLOAD PDF




Related documents