Search
Filters
Close

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

51313-02526-Effect of pH on the Electrochemical Behavior of UNS S31803 Duplex SS in H2S-CO2-Cl– Environment

Product Number: 51313-02526-SG
ISBN: 02526 2013 CP
Author: Jinhui Ding
Publication Date: 2013
$0.00
$20.00
$20.00

The corrosion behavior of duplex stainless steel(DSS) in H2S-Cl- environment has been discussed for a long time. However there has been limited work conducted in environments where high concentration of H2S CO2 and Cl- coordinated to cause localised corrosion of DSS.

In this paper the electrochemical behavior of 2205 DSS was investigated in environments containing 60kPa H2S 40kPa CO2 and 150000ppm Cl- at 60?. The pH in test environments was adjusted to 4.5 3.5 3.3 and 3.0 respectively by adding different content of CH3COOH. Cyclic potentiodynamic polarization measurements and electrochemical impedance spectroscopy were conducted to reveal the effect of pH on electrochemical behavior of 2205 DSS. From the cyclic potentiodynamic polarization curves some important characterisation parameters such as Ecorr Epit Epp ?E and Ipass were obtained and analysed. The EIS datas were analysed by using equivalent circuit and calculating the values of relavant elements. The results indicated that decrease of pH accelerated corrosion process and made passive film more susceptible to be attacked.
 

The corrosion behavior of duplex stainless steel(DSS) in H2S-Cl- environment has been discussed for a long time. However there has been limited work conducted in environments where high concentration of H2S CO2 and Cl- coordinated to cause localised corrosion of DSS.

In this paper the electrochemical behavior of 2205 DSS was investigated in environments containing 60kPa H2S 40kPa CO2 and 150000ppm Cl- at 60?. The pH in test environments was adjusted to 4.5 3.5 3.3 and 3.0 respectively by adding different content of CH3COOH. Cyclic potentiodynamic polarization measurements and electrochemical impedance spectroscopy were conducted to reveal the effect of pH on electrochemical behavior of 2205 DSS. From the cyclic potentiodynamic polarization curves some important characterisation parameters such as Ecorr Epit Epp ?E and Ipass were obtained and analysed. The EIS datas were analysed by using equivalent circuit and calculating the values of relavant elements. The results indicated that decrease of pH accelerated corrosion process and made passive film more susceptible to be attacked.
 

Product tags
Also Purchased
Picture for Duplex Stainless Steel Chloride Stress Corrosion Cracking Risk in Refining
Available for download

51313-02520-Duplex Stainless Steel Chloride Stress Corrosion Cracking Risk in Refining

Product Number: 51313-02520-SG
ISBN: 02520 2013 CP
Author: Karly Moore
Publication Date: 2013
$20.00
Picture for SCC Mechanism of UNS S31803 Duplex Stainless Steel Under High H2S-CO2 Pressure with High Cl– Content
Available for download

51313-02531-SCC Mechanism of UNS S31803 Duplex Stainless Steel Under High H2S-CO2 Pressure with High Cl– Content

Product Number: 51313-02531-SG
ISBN: 02531 2013 CP
Author: Jinhui Ding
Publication Date: 2013
$20.00
Picture for Test Devices to Assess SCC in Ultra High Pressure of H2S
Available for download

51313-02524-Test Devices to Assess SCC in Ultra High Pressure of H2S

Product Number: 51313-02524-SG
ISBN: 02524 2013 CP
Author: Giovanna Gabetta
Publication Date: 2013
$20.00