文献类型：期刊文献

英文题名：Research on the Optimal Protection Parameters of Graphene Composite Conductive Coatings Combined with Impressed Current Cathodic Protection Technology in Marine Atmospheric Environments

作者：Hu, Jiezhen[1,2,3];Liu, Dahai[1];Deng, Peichang[2,4];Shangguan, Juyu[1];Zheng, Guo[5];Yang, Jingrong[1]

机构：[1]Guangdong Ocean Univ, Coll Mech Engn, Zhanjiang 524088, Peoples R China;[2]Zhanjiang Key Lab Corros & Protect Ocean Engn & Eq, Zhanjiang 524088, Peoples R China;[3]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：2024

卷号：14

期号：10

外文期刊名：COATINGS

收录：SCI-EXPANDED(收录号：WOS:001342770000001)、、Scopus(收录号：2-s2.0-85207504498)、WOS

基金：This study was funded by the Natural Science Foundation of Guangdong Province (No. 2021A1515012129), the Science & Technology Development Foundation of Zhanjiang (2022A01029), and the Zhanjiang Power Company Limited of Guangdong.

语种：英文

外文关键词：applied current cathodic protection; marine atmospheric environment; coating damage rate; impressed voltage; coating protection

外文摘要：Based on the principle of a micropore-filling electrolyte, a graphene composite conductive coating combined with impressed current cathodic protection (ICCP) technology was constructed and applied in a marine atmospheric environment. To further explore the optimal protection parameters of the graphene composite conductive coating combined with ICCP technology in a marine atmospheric environment, the effects of the coating damage area (A), impressed voltage (B), and distance from the contact point (C) on the protective performance of the coating were investigated via orthogonal experiments. The optimal protection voltage and effective protection distance were verified by super-depth-of-field morphology observations and electrochemical tests. The orthogonal experimental results show that the primary and secondary orders affecting the protective performance of the conductive graphene composite coating are as follows: applied voltage (B) > coating damage area (A) > distance from the point of contact (C). The optimal protective parameters of the coating in the marine atmospheric environment are an applied voltage of 0.7 V, a damage rate of <= 1%, and a distance from the point of contact of 190 mm. The experimental results show that the corrosion potential of the sample is the highest under an applied voltage of 0.7 V, and the corrosion products do not diffuse to the surface of the coating. When the polarization resistance (Rp) values at 110 mm and 190 mm from the negative electrode at the point of contact are greater, the corrosion rate is lower, and the coating protection performance is better.