Effect of Deposition of NaCl on the Initial Atmospheric Corrosion of Q235

J Chin Soc Corr Pro

2006, Vol. 26

Issue (1): 26-30 DOI:

Research Report

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Effect of Deposition of NaCl on the Initial Atmospheric Corrosion of Q235

;;Xiaogang Li;;

北京科技大学

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Abstract The influence of NaCl on the initial atmospheric corrosion of Q235 steel in simulated atmospheric environment including 5×10-6(volume) SO2 and 1%(volume) CO2 are investigated by mass gain,SEM and X-ray diffraction techniques.The results show that Q235 steel suffer a serious corrosion under the cooperative effect of NaCl,CO2 and SO2 .It proved that the cooperative effect of SO2 and CO2 is important for the corrosion aggravating of Q235 steel when the NaCl is existed.The presence of NaCl accelerated and catalyzed the reaction of initial stage of atmospheric corrosion for carbon steel.The massgain in the presence of NaCl was near decuple higher than that in the absence of NaCl.The corrosion products mainly are Fe3O4,γ－Fe2O3 and γ－FeOOH.

Key words: Simulate Atmospheric Environment Q235 Steel Atmospheric Corrosion

Received: 01 September 2004

ZTFLH:

TG172.3

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Cite this article:

Xiaogang Li. Effect of Deposition of NaCl on the Initial Atmospheric Corrosion of Q235. J Chin Soc Corr Pro, 2006, 26(1): 26-30 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2006/V26/I1/26

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