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Corrosion Behaviors of X80 Pipeline Steel in Different Simulated Alkaline Soil Solution

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Abstract:

Corrosion behaviors of X80 pipeline steel were investigated in different simulated alkaline soil solution using electrochemical test, EDS coupled to SEM and weight loss method. The results showed uniform corrosion was happened on X80 steel in Shanshan and Hami simulated solution, and local corrosion was the main failure mode for X80 steel in Yumen simulated solution. The ranking of corrosion rate of X80 steel from the biggest in simulated solution was Hami, Shanshan and Yumen. With the increasing of immersion time, a dense Ca2+ deposited layer was formed on the surface of X80 steel, which could inhibiting the Cl- effects on the corrosion of X80 steel in Shanshan and Hami solution. The SO42- competition absorbed effect could provide certain corrosion protection for X80 steel in Yumen solution at the early corrosion stage.

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Periodical:

Advanced Materials Research (Volumes 189-193)

Pages:

4261-4266

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.189-193.4261

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Online since:

February 2011

Authors:

Ying Wang, Hong Ying Yu, Yuan Cheng, Hai Tao Shan, Li Xin Zhang, Dong Bai Sun

Keywords:

Corrosion Kinetic, Saline Alkali Soil, Second West-East Gas Pipeline Project, Simulated Soil Solution, X80 Pipeline Steel

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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