ウッドセラミックスを用いた接地電極の腐食評価

抄録

Grounding is necessary for almost all electrical equipment and appliance. The grounding electrode is installed under the ground, therefore which is in the soil for a long time period. The grounding electrode can be damaged by corrosion. There are two kinds of corrosion, i.e., wet corrosion and dry corrosion. The wet corrosion is a primary phenomenon occurring in the soil. An application of woodceramics, which is a carbon material made from woody material, is focused on tolerance to corrosion. Copper and woodceramics electrodes are set in sodium chloride solution or artificial sea water, and then the corrosion potential and current are measured. As a result, the corrosion current was detected at copper electrode. However, with woodceramics electrode, the current with electrolysis for sodium chloride solution was detected, corrosion current was not detected. Hence, it is indicated that woodceramics has resistant to corrosion for sea water as compared with copper.