EFFECT OF HYDROSTATIC PRESSURE OF 3.5%NaCl SOLUTION ON THE CORROSION BEHAVIOR OF EPOXY COATING

J Chin Soc Corr Pro

2010, Vol. 30

Issue (5): 374-378 DOI:

Research Articles

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EFFECT OF HYDROSTATIC PRESSURE OF 3.5%NaCl SOLUTION ON THE CORROSION BEHAVIOR OF EPOXY COATING

LIU Haoyu¹, LIANG Xiaofeng^1,2, SHAO Yawei¹, MENG Guozhe¹,ZHANG Tao¹, WANG Fuhui^1,3

1. Corrosion and Protection Laboratory, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001
2. Narada Power Source Co.Ltd, Hangzhou310013
3. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016

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Abstract The effect of hydrostatic pressures of 3.5%NaCl solution on the corrosion resistance of the epoxy coating was studied by using electrochemical impedance spectroscopy (EIS). The results revealed that the hydrostatic pressure greatly affected the failure process of the coating. The diffusion rate of the electrolyte solution through the coatings was accelerated in the solution under high hydrostatic pressure. Compared with the case under atmospheric pressure, the coating resistance was reduced; the charge-transfer resistance was decreased, metal corrosion reaction was more accelerated; the protection properties of the coating was deteriorated.

Key words: epoxy coating hydrostatic pressure EIS degradation

Received: 30 March 2009

ZTFLH:

TG174.46

Corresponding Authors: SHAO Yawei E-mail: shaoyawei@hrbeu.edu.cn

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Cite this article:

LIU Haoyu, LIANG Xiaofeng, SHAO Yawei, MENG Guozhe,ZHANG Tao, WANG Fuhui. EFFECT OF HYDROSTATIC PRESSURE OF 3.5%NaCl SOLUTION ON THE CORROSION BEHAVIOR OF EPOXY COATING. J Chin Soc Corr Pro, 2010, 30(5): 374-378.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2010/V30/I5/374

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