化工学报Issue(11)：4572-4577,6.DOI:10.11949/j.issn.0438-1157.20150427
海水压力对深海用环氧涂层防护性能的影响
Effect of seawater pressure on protection properties of epoxy coating used in deep sea
摘要
Abstract
The electrochemical corrosion behavior of the epoxy heavy-duty coating immersed in seawater under the alternating pressure was investigated by electrochemical impedance spectroscopy (EIS) and local electrochemical impedance spectroscopy(LEIS). The results showed that compared with atmospheric pressure, the coating resistance was lower, but the coating capacitance was higher under the alternating pressure. The coating resistance remained above 107Ω·cm2, showing that both coatings had good protective properties. The impedance around the defect region of the coating systems with artificial point defects was lower under the alternating pressure. It indicated that the permeation process of the electrolyte solution to the coating metal interface was easier under the alternating pressure, accelerating the corrosion of the steel under the coatings.关键词
腐蚀/环氧涂层/交变压力/电化学/LEISKey words
corrosion/epoxy coating/alternating pressure/electrochemistry/LEIS分类
矿业与冶金引用本文复制引用
高瑾,钱海燕,孙晓华,郭为民,李晓刚..海水压力对深海用环氧涂层防护性能的影响[J].化工学报,2015,(11):4572-4577,6.基金项目
国家重点基础研究发展计划项目（2014CB643300）；国家自然科学基金项目（51071027）。@@@@supported by the National Basic Research Program of China (2014CB643300) and the National Natural Science Foundation of China (51071027) （2014CB643300）
