From the experiment result of metal specimens buried in underground, discussing the influence of AC stray current on cathode protection by using galvanicanode method.
根据室外现场埋片试验结果，讨论了杂散电流对牺牲阳极阴极保护性能的影响。
2
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
By insulating flange at the junction between the new and old pipe, the long line galvanic cell is "broken up" - the anode (new pipe) is electrically separated from the cathode (old pipe).