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Effect of Chloric Ions and Temperature on the Pitting Corrosion Behavior of Supermartensitic Stainless Steel in CO2-Saturated Chloride Solution

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Abstract:

Abstract. The pitting corrosion behavior of two kinds (W and Cu-free; W and Cu-bearing) of supermartensitic stainless steels (SMSS) were studied in CO2-saturated chloride solution with three chloric ion concentration: 21200, 50000, 100000ppm, and four different temperatures:19, 40, 60, 80°C by potentiodynamic polarization measurement. The results indicate that the pitting potential decreased with temperature increasing, and in a logarithmic relation with the chlorine concentration in both alloys. The pitting potential of supermartensitic stainless steel is increased by together adding tungsten and copper.

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Periodical:

Advanced Materials Research (Volumes 538-541)

Pages:

2342-2345

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.538-541.2342

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Cite this paper

Online since:

June 2012

Authors:

Jun Li, Dong Ye, Yong Mei Chen, Jie Su, Kun Yu Zhao

Keywords:

Pitting Potential, Potentiodynamic Polarization Curves, Supermartensitic Stainless Steels

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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