文献类型：期刊文献

英文题名：Nonuniform Corrosion in the Vertical Direction of Q345 Steel in a Real Ocean Environment

作者：Hu, Jiezhen[1,2,3];Huang, Huan[1];Hu, Xin[1];Deng, Peichang[2,4];Zheng, Guo[5];Chen, Jiahong[1];Tu, Zhiwen[1]

机构：[1]Guangdong Ocean Univ, Coll Mech Engn, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Zhanjiang Key Lab Corros & Protect Ocean Engn Equi, Zhanjiang 524088, Peoples R China;[3]Guangdong Ocean Univ, Guangdong Prov Ocean Equipment & Mfg Engn Technol, Zhanjiang 524088, Peoples R China;[4]Guangdong Ocean Univ, Coll Chem & Environm, Zhanjiang 524088, Peoples R China;[5]Zhanjiang Power Co Ltd, Zhanjiang 524099, Peoples R China

年份：2025

卷号：2025

期号：1

外文期刊名：JOURNAL OF CHEMISTRY

收录：SCI-EXPANDED(收录号：WOS:001403484700001)、、Scopus(收录号：2-s2.0-105000659248)、WOS

基金：The authors are sincerely grateful for the financial support from the Natural Science Foundation of China (51801033), the Science and Technology Development Fundation of Zhanjiang (2022A01029), and the Postgraduate Education Innovation Project of Guangdong Ocean University.

语种：英文

外文关键词：array electrode technology; corrosion monitoring system; coulometer principle; nonuniform corrosion; self-coupling

外文摘要：The aim of this investigation was to study nonuniform corrosion in the vertical direction of Q345 steel in the South China Sea. First, a metal corrosion monitoring system was designed and applied based on the coulometer principle and array electrode technology. Then, through coulometer testing, weightlessness analysis, electrochemical testing, and surface morphology observation, the corrosion behavior of Q345 steel used in an offshore wind turbine in Zhanjiang Bay in the South China Sea was studied. The results revealed that within the first 30 days of the experiment, the array electrodes connected by electricity exhibited sacrificial anode/cathode protection with self-coupling. Therefore, the corrosion rates of the electrodes were slowed. Between 60 and 120 days, the array electrodes underwent a transition in the anode/cathode region. In actual marine environments, the most severely corroded areas of long metal structures were near the sea surface and seabed and had to be prioritized for protection.