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51316-7362-Interaction of H2S/CO2/O2 on Hydrogen Permeation of X70 Steel in Sour Humidity Corrosion Environment

Corrosion performance of 3%Cr steel in CO2 and CO2-H2S environments was investigated using high temperature and high pressure autoclave. Corrosion scales were characterized by x-ray powder diffraction, scanning electron microscopy and energy-dispersive X-ray spectroscopy.

Product Number: 51316-7362-SG
ISBN: 7362 2016 CP
Author: Wei Liu
Publication Date: 2016
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$20.00
$20.00

 

Corrosion performance of 3%Cr steel in CO2 and CO2-H2S environments was investigated using high temperature and high pressure autoclave. Corrosion scales were characterized by XRD, SEM and EDS. The existence of Cr element and H2S both reduced general corrosion rates of 3Cr steel compared with API X60 steel. Under CO2 and CO2-low H2S partial pressure environments, the Cr-rich layer on 3Cr steel played a decisive role in inhibiting corrosion due to the hydrolytic action of Cr3+ and the formation of chromium compound. Under CO2-H2S environment, 3Cr steel still exhibited higher corrosion resistance than carbon steel and would be a promising material option.

 Key words: downloadable, 3Cr Steel, CO2-H2S corrosion, Corrosion scale, Mechanism

 

 

Corrosion performance of 3%Cr steel in CO2 and CO2-H2S environments was investigated using high temperature and high pressure autoclave. Corrosion scales were characterized by XRD, SEM and EDS. The existence of Cr element and H2S both reduced general corrosion rates of 3Cr steel compared with API X60 steel. Under CO2 and CO2-low H2S partial pressure environments, the Cr-rich layer on 3Cr steel played a decisive role in inhibiting corrosion due to the hydrolytic action of Cr3+ and the formation of chromium compound. Under CO2-H2S environment, 3Cr steel still exhibited higher corrosion resistance than carbon steel and would be a promising material option.

 Key words: downloadable, 3Cr Steel, CO2-H2S corrosion, Corrosion scale, Mechanism

 

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