静水压力下Q235钢环氧涂层在3.5%NaCl溶液中的失效过程

中国腐蚀与防护学报

2010, Vol. 30

Issue (5): 374-378

研究报告

本期目录 | 过刊浏览

静水压力下Q235钢环氧涂层在3.5%NaCl溶液中的失效过程

刘浩宇¹,梁小峰^1,2,邵亚薇¹,孟国哲¹,张涛¹,王福会^1,3

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. 浙江南都电源动力股份有限公司杭州 310013
3. 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 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

全文: PDF(1087 KB)

摘要: 利用电化学阻抗谱（EIS）研究了一种适用于深海环境的重防护环氧涂料在3.5%NaCl溶液中常压以及3.5 MPa下的破坏机制，探讨了静水压力对涂< 层失效过程的影响。结果表明，静水压力加速了电解质溶液在涂层中的渗透，对涂层的失效过程有着明显的影响。与常压下相比，静水压力下涂层电阻更小，涂层的失效过程更快；涂层/金属界面的电荷转移电阻更小，界面处金属腐蚀反应更快，涂层下金属基体更容易发生腐蚀，涂层的防护性能变差。

关键词 ：涂料, 静水压力, 电化学阻抗谱, 失效过程

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

收稿日期: 2009-03-30

ZTFLH:

TG174.46

基金资助:

国家自然科学基金项目(50771038)资助

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: 刘浩宇，男，1985年生，硕士生，研究方向为材料腐蚀与防护

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引用本文:

刘浩宇,梁小峰,邵亚薇,孟国哲,张涛,王福会. 静水压力下Q235钢环氧涂层在3.5%NaCl溶液中的失效过程[J]. 中国腐蚀与防护学报, 2010, 30(5): 374-378.
LIU Gao-Yu. 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.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2010/V30/I5/374

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