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Corrosion Engineering, Science and Technology
The International Journal of Corrosion Processes and Corrosion Control
Volume 48, 2013 - Issue 5
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Original Article

Influence of AC interference to corrosion of Q235 carbon steel

Y T Li Institute of OceanologyChinese Academy of Sciences, Qingdao266071, ChinaCorrespondence[email protected]
,
X Li Institute of OceanologyChinese Academy of Sciences, Qingdao266071, China; University of Chinese Academy of SciencesBeijing100049, China
,
G W Cai Institute of OceanologyChinese Academy of Sciences, Qingdao266071, China; University of Chinese Academy of SciencesBeijing100049, China
&
L H Yang Institute of OceanologyChinese Academy of Sciences, Qingdao266071, China
Pages 322-326 | Received 13 Oct 2012, Accepted 26 Dec 2012, Published online: 18 Nov 2013
 
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Abstract

The alternating current (AC) has a strong influence on the corrosion of carbon steel Q235 in soil. AC corrosion1–3 was investigated by morphology observation, weight loss analysis and electrochemical measurement. The results of morphology observation and weight loss analysis showed that AC increased the corrosion rate and the influence was weakened when a protective layer was built up. The electrochemical tests confirmed that in the presence of AC, the corrosion potential shifted toward the negative direction and the exchange current density increased.4–9

The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (grant no. 41276074).

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