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实验设计了一种预先植入涂层内部的圆环状微电极,并基于预埋微电极的方法设计了适用于深海交变压力环境下有机涂层原位电化学阻抗测试的电极系统.结果表明:设计的预埋微电极有效避免了外置电极在使用过程中不易安装以及有机涂层本身厚度对电化学测试信号的影响等缺点,实现了原位的涂层服役性能评价.同时,该微电极可以在深海高压及交变压力环境下有效使用,测试结果与传统三电极测量装置具有较好的一致性,证明了微电极设计的有效性及可靠性.“,”A kind of circular loop microelectrode was designed and embedded in the coating body during coating fabrication.Then a novel electrochemical impedance spectroscopy (EIS) measurement system was developed based on the embedded-microelectrode (EM),which was suitable for in situ evaluation of the coating in alternating hydrostatic pressured (AHP) sea-water with the purpose of simulation of deep sea environments.The results showed that EM could avoid difficulties related with the installation of an external electrode and could overcome drawbacks that the detected signals of the corrosion of metal beneath thick coatings was too weak for the field measurement by an external electrode.Therefore,the EM can be utilized in high hydrostatic pressured or AHP sea-water environment.The EIS results of the EM system were consistent well with those of the traditional three-electrode measuring device.Consequently,the validity and reliability of EM were reasonably confirmed.