...The value of the cathodic current (corrosion protection current) required to lower the potential of a steel structure to this value varies greatly depending on the environment and the number of years that have passed since construction. There are two methods for supplying corrosion protection current to a structure: the galvanic anode method and the external power source method. The galvanic anode method uses a material with a low electrode potential when dissolved, such as zinc, aluminum, or magnesium, by shorting it to the structure and using it as a so-called sacrificial anode. *Some of the terminology used in reference to the "external power supply system" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…鉄鋼構造物の電位をこの値まで下げるために必要なカソード電流(防食電流)の値は環境や経過年数によって大幅に変化する。構造物に防食電流を供給するには流電陽極方式と外部電源方式との二つの方式がある。流電陽極方式は亜鉛,アルミニウム,マグネシウムなどの溶解時の電極電位の低い材料を構造物と短絡していわゆる犠牲陽極として用いるものである。… ※「外部電源方式」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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