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Journal of Chinese Society for Corrosion and protection  2012, Vol. 32 Issue (6): 496-500    DOI:
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EFFECT OF AGING ON ELECTROCHEMICAL CORROSION BEHAVIOR OF 2205 DUPLEX STAINLESS STEEL IN SULFUR ENVIRONMENTS
ZHANG Yu, WANG Jun, SHI Shukun, WANG Yuansheng
School of Manufaturing Science and Engineering, Sichuan University, Chengdu 610065
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Abstract  

Effect of aging treatment on electrochemical corrosion of 2205 duplex stainless steel (DDS) in 3.5% NaCl and (1, 5, 10) g/L S solution were studied by potentio-dynamic scanning (PDS) and electrochemical impendence spectroscopy (EIS). The research shows that the σ-phase was precipitated at the γ/α interfaces after aging treatment(800℃), it has a harmful effect on the corrosion of 2205 DDS. The corrosion rate of 2205 DDS increases with the amount of σ-phase, which increases with aging time. Besides, it also promotes the corrosion rate of 2205 DDS with adding sulfur.

Key words:  2205 DDS      aging treatment      &sigma      phase      electrochemical corrosion behavior     
Received:  01 December 2011     
ZTFLH:  TG172  
Corresponding Authors:  WANG Jun     E-mail:  srwangjun@163.com

Cite this article: 

ZHANG Yu, WANG Jun, SHI Shukun, WANG Yuansheng. EFFECT OF AGING ON ELECTROCHEMICAL CORROSION BEHAVIOR OF 2205 DUPLEX STAINLESS STEEL IN SULFUR ENVIRONMENTS. Journal of Chinese Society for Corrosion and protection, 2012, 32(6): 496-500.

URL: 

https://www.jcscp.org/EN/     OR     https://www.jcscp.org/EN/Y2012/V32/I6/496

 


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