CARBON STEEL CORROSION INDUCED BY ALTERNATING CURRENT

J Chin Soc Corr Pro

2011, Vol. 31

Issue (4): 270-274 DOI:

Research Articles

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CARBON STEEL CORROSION INDUCED BY ALTERNATING CURRENT

WENG Yongji¹, WANG Ning^1,2

1. College of Science, China University of Petroleum, Beijing 102200
2. Luoyang Petrochemical Engineering Corporation of SINOPEC, Luoyang 471003

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Abstract Mass loss tests were performed for carbon steel corrosion induced by alternating current，as well as the measurement of polarization curves under AC interference. The results show that the AC corrosion rate of carbon steel follows a power function with the AC interference intensity within AC current density 0~250 A/m², which concerned in this paper. The effect of AC interference on the polarization curves (1) decreasing the surface reaction resistance, and (2) decreasing both of the anodic and cathodic Tafel slopes. Thereby, the AC corrosion characteristics and rules were well explained and the AC corrosion mechanism was also discussed.

Key words: carbon steel AC induced corrosion mass loss power function polarization Tafel slope

Received: 28 May 2010

ZTFLH:

TG171

Corresponding Authors: WENG Yongji E-mail: weng_yj@139.com

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Cite this article:

WENG Yongji, WANG Ning. CARBON STEEL CORROSION INDUCED BY ALTERNATING CURRENT. J Chin Soc Corr Pro, 2011, 31(4): 270-274.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2011/V31/I4/270

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