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阴极保护时碳钢的交流阻抗特性和最佳防蚀电位
侯保荣¹, 西方笃², 水流徹², 春山志郎²
1.中国科学院海洋研究所青岛 266071;2.东京工业大学日本

摘要:

测定了在3.5％食盐水中碳钢的法拉第交流阻抗,其结果与理论解析结果一致。阴极保护的实际效率（保护效率p和保护电流利用率q的乘积即r=p×q）在腐蚀电位E′_cor附近表现出最大值,这个电位可以认为是阴极保护的最佳保护电位。由于法拉第交流阻抗值容易被测得,为此提出了一种对阴极保护系统进行监测管理的一种新方法。

关键词: 阴极保护碳钢交流阻抗防蚀电位

DOI：

分类号:

基金项目:中国科学院海洋研究所调查研究报告第2182号。赴日合作研究项目

THE IMPEDANCE AND OPTIMUM PROTECTION WHEN CARBON STEEL PROTECTED CATHODICALLY

Hou Baorong¹, Atsushi Nishikata², Tooru Tsuru², Shiro Haruyama²

1.Institute of Oceanology, Academia Sinica, Qingdao 266071;2.Faculty of Engineering, Tokyo Institute of Technology

Abstract:

The measured Faraday impedance of carbon steel in 3.5% NaCl solution, agreed with the theoretical. Marimum cathodic protection effecience (r) (protection effeciency p and utilization ratio of protection current q, r=p×q) is realized at around the corrosion potenntial E′_cor, which can be regarded as the Optimum protection potential. As the Faraday impedance can be easily measured, a new method for assessingand setting up cathodic protection is possible.

Key words: Cathodic protection, Carbon steel, Impedance, Corrosion potential

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