This paper introduces a method in which a sacrificial anode with special shape was added between casings and pipeline for solving the corrosion problem in the special environment.
Once corrosive solution arrived at the substrate, galvanic corrosion occurred, and aluminum coatings acted as the sacrificial anode protecting the steel substrate from corrosion.
腐蚀介质到达基体时，将发生电偶腐蚀，铝涂层会作为牺牲阳极保护基体免受腐蚀。
3
Sacrificial anodes protection can decrease the degree of corrosion wear effectively.