Review on Soil Corrosion and Protection of Grounding Grids

• Published in: Materials Vol. 17; no. 2; p. 507
• Main Authors: Zhao, Jing, Meng, Xian, Ren, Xiao, Li, Shengfang, Zhang, Fuhao, Yang, Xiaofang, Xu, Junyao, Yuan, Yuan
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01.01.2024
• Subjects: Bibliometrics; Carbon steel; Carbon steels; Cathodic protection; Copper; Corrosion; corrosion mechanism; Corrosion potential; Corrosion prevention; Corrosion resistance; corrosion-protection measures; Electric equipment; Electrical equipment and supplies; Electrical machinery; Electrodes; Galvanized steel; Galvanized steels; grounding grid; Heat resistance; Keywords; Microbial corrosion; soil corrosion; Soil ecology; Soil microbiology; Soil properties; Soils; Steel; Steel, Galvanized; Trends; Underground corrosion; Zinc; China; grounding grid; corrosion-protection measures; soil corrosion; corrosion mechanism
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma17020507

The corrosion of grounding grid materials in soil is a prominent factor in power and electrical equipment failure. This paper aims to delve into the corrosion characteristics of grounding grid materials and the corresponding methods of safeguarding against this phenomenon. Firstly, the influencing factors of the soil environment on the corrosion of the grounding grid are introduced, including soil physicochemical properties, microorganisms, and stray currents. Then, the corrosion behavior and durability of common grounding grid materials such as copper, carbon steel, and galvanized steel are discussed in detail and compared comprehensively. In addition, commonly used protective measures in China and outside China, including anti-corrosion coatings, electrochemical protection, and other technologies are introduced. Finally, it summarizes the current research progress and potential future directions of this field of study.