A series in which the natural potentials of metals and alloys in a certain environment are measured and arranged in order of magnitude. While the ionization tendency of metals is based on the theoretically calculated standard electrode potential for pure metals, the corrosion potential series is based on actual measurements, so it is possible to rank alloy materials as well, which is useful for predicting the possibility of contact corrosion between dissimilar metals. Naturally, the ranking will change if the environment changes. When two metal materials are brought into contact with each other, there is a risk of accelerated corrosion. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
ある環境における金属および合金の自然電位を実測し,その大きさの順序に配列した列。金属のイオン化傾向が純金属に対する理論的に求めた標準電極電位をもとにしているのに対し,腐食電位列は実測値をもとにしているので,合金材料に対しても順位をつけることができ,異種金属の接触腐食の可能性を推測するのに役立つ。当然ながら環境が変わると順位も変化する。二つの金属材料の相対的な位置がより卑なほうにある金属が両者を接触させたとき,加速された腐食を受ける危険性をもっている。
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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