循环压力对环氧涂层在模拟深海环境中失效行为的影响

中国腐蚀与防护学报

2011, Vol. 31

Issue (4): 275-281

研究报告

本期目录 | 过刊浏览

循环压力对环氧涂层在模拟深海环境中失效行为的影响

唐俊文¹,邵亚薇¹,张涛¹,孟国哲¹,王福会^1,2

1. 哈尔滨工程大学材料科学与化学工程学院腐蚀与防护实验室哈尔滨 150001
2. 中国科学院金属研究所金属腐蚀与防护国家重点实验室沈阳 110016

EFFECT OF CYCLIC PRESSURE ON DEGRADATION BEHAVIOR OF EPOXY COATING IN SIMULATED DEEP OCEAN ENVIRONMENT

TANG Junwen¹, SHAO Yawei¹, ZHANG Tao¹, MENG Guozhe¹, WANG Fuhui^1,2

1. Corrosion and Protection Laboratory, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001
2. State Key Laboratory for Corrosion and Protection, Institute of Metals Research, Chinese Academy of Sciences, Shenyang 110016

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摘要: 在模拟深海环境下，利用电化学阻抗技术并结合重量法，研究了循环压力对纯环氧涂层在3.5 mass% NaCl溶液中失效行为的影响。结果表明，循环压力条件下，涂层的阻抗行为呈周期性变化规律：在高压条件下浸泡时，有机涂层电容较高、涂层电阻较低；而常压条件下两者都较高。循环压力增大，腐蚀介质更容易扩散到涂层内部，使得涂层吸水量增加，涂层电阻降低，涂层防护性能恶化。

关键词 ：环氧涂层, 循环压力, 深海腐蚀, 电化学阻抗谱

Abstract：The effect of cyclic pressure on the degradation behavior of the epoxy coating on carbon steel surface in 3.5% NaCl solution in a simulated deep-ocean environment was studied using electrochemical impedance spectroscopy (EIS) and weight method. The results showed that the EIS characteristics displayed a periodic variation under the cyclic pressure condition. The coating capacitance at high pressure was higher and the coating resistance was lower than that at atmospheric pressure during immersion periods, respectively. With increasing the cyclic pressure, the corrosion medium such as water had diffused to the coating/metal interface more easily. As a result, the increase of the water absorption capacity of the epoxy coating and the decrease of coating resistance were observed. The coating protection properties were obviously deteriorated.

Key words： epoxy coating cyclic pressure deep ocean corrosion electrochemical impedance spectroscopy(EIS)

收稿日期: 2010-05-24

ZTFLH:

TG174.41

通讯作者: 邵亚薇 E-mail: shaoyawei@hrbeu.edu.cn

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

作者简介: 唐俊文，男，1985年生，博士生，研究方向为材料腐蚀与防护

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引用本文:

唐俊文,邵亚薇,张涛,孟国哲,王福会. 循环压力对环氧涂层在模拟深海环境中失效行为的影响[J]. 中国腐蚀与防护学报, 2011, 31(4): 275-281.
TANG Jun-Wen, SHAO Ya-Wei, ZHANG Shou, MENG Guo-Zhe, YU Fu-Hui. EFFECT OF CYCLIC PRESSURE ON DEGRADATION BEHAVIOR OF EPOXY COATING IN SIMULATED DEEP OCEAN ENVIRONMENT. J Chin Soc Corr Pro, 2011, 31(4): 275-281.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2011/V31/I4/275

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