Study on Corrosion Characteristics of Grounding Materials in High Corrosion Area

Abstract Due to the differences in causes of corrosion, soil corrosion characteristics coastal mountains and areas may be quite different. As a result, there are causes, status service life grounding grids transmission line towers built areas. Based on difference apparent resistivity under area with high this paper selects 12 samples for physical chemical analysis. The analysis results show that two typical soils acid weak alkaline erection area, which highly corrosive but different mechanisms. Then liquids were extracted, polarization curve test carbon steel galvanized steel, commonly used grid poles towers, was carried out 7 consecutive days, laws obtained. corrosiveness acidic is much greater than weakly soil. rates 3.7 times 5.2 soil, respectively. In addition, using extracted liquid, 30-day accelerated experiment performed an empirical formula change weight time Combined surface morphology rate after analyzed mechanism materials. research provide reference selection application