Effect of CO2 on Atmospheric Corrosion of UNS G10190 Steel under Thin Electrolyte Film

Chemical Research in Chinese Universities ›› 2000, Vol. 16 ›› Issue (1): 36-41.

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Effect of CO₂ on Atmospheric Corrosion of UNS G10190 Steel under Thin Electrolyte Film

WANG Feng-ping, ZHANG Xue-yuan, DU Yuan-long

State Key Lab for Corrosion and Protection, Institute of Corrosion and Protection of Metals, Chinese Academy of Sciences, Shenyang 110015, P. R. China

Received:1999-08-31 Online:2000-01-24 Published:2011-08-17
Supported by:
the National Natural Science Foundation of China(No.59871051)

Abstract

Abstract: The atmospheric corrosion of UNS G10190 steel under a thin electrolyte film in the atmosphere polluted by CO₂, has been studied in the lab using an atmospheric corrosion monitor (ACM) in combination with XRD and SEM observations of the surface of steel.The ACM study indicated that the corrosion rate of the steel increased with increasing carbon dioxide concentration.The XRD and SEM observations showed that no carbonate was found in the corrosion product on the steel surface.The corrosion product consisted of two layers, i.e., inner and outer layer.From the experimental results, it was concluded that CO₂ played an enhancing role in the atmospheric corrosion of UNS G10190 steel.The film of the corrosion product showed slight protection.

Key words: Atmospheric corrosion, Thin electrolyte film, Carbon dioxide, ACM, UNS G10190 steel

WANG Feng-ping, ZHANG Xue-yuan, DU Yuan-long . Effect of CO₂ on Atmospheric Corrosion of UNS G10190 Steel under Thin Electrolyte Film[J]. Chemical Research in Chinese Universities, 2000, 16(1): 36-41.

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Effect of CO₂ on Atmospheric Corrosion of UNS G10190 Steel under Thin Electrolyte Film

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