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

Picture for Interaction of H2S/CO2/O2 on Hydrogen Permeation of X70 Steel in Sour Humidity Corrosion Environment
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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
Industry: Science of Corrosion
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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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Picture for Localized Corrosion of Mild Steel under Iron Sulfide Layers in CO2/H2S Environment
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51318-10990-Localized Corrosion of Mild Steel under Iron Sulfide Layers in CO2/H2S Environment

Product Number: 51318-10990-SG
Author: Saba Navabzadeh Esmaeely / Gheorghe Bota / Bruce Brown / Srdjan Nesic
Publication Date: 2018
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Mild steel specimens (API 5L X65) were pretreated to form a pyrrhotite layer on the surface using high temperature sulfidation in oil, then exposed to a range of aqueous CO2 and H2S corrosion environments, leading to initiation of localized corrosion.

 
Picture for Electrochemical Model of Sour Corrosion of Mild Steel - Validation at High H2S Partial Pressures
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Electrochemical Model of Sour Corrosion of Mild Steel - Validation at High H2S Partial Pressures

Product Number: 51317--9098-SG
ISBN: 9098 2017 CP
Author: Saba Navabzadeh Esmaeely
Publication Date: 2017
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H2S corrosion mechanisms, specifically at high partial pressures of H2S (pH2S), have not been extensively studied because of experimental difficulties and associated safety issues. The current study was conducted under well-controlled conditions at pH2S of 0.05 and 0.096 MPa.
Picture for 11293 Effect of H2S/CO2 Corrosion Scale on Hydrogen Permeation
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11293 Effect of H2S/CO2 Corrosion Scale on Hydrogen Permeation

Product Number: 51300-11293-SG
ISBN: 2011 11293 CP
Author: Wenhui Hao, Lei Zhang, Han Li, Minxu Lu and Lining Xu
Publication Date: 2011
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