localized corrosion

Japanese: localized corrosion(英語表記)localizedcorrosion
localized corrosion

...Even if the corrosion is general, if the corroded surface is very rough and uneven, it is called uneven corrosion, and may be included in the local corrosion below. Localized corrosion is corrosion that occurs in corrosion-resistant materials, and is a form of corrosion that occurs in which the progress of corrosion is concentrated in a specific location, even though most of the surface is actually corrosion-resistant, in a combination of a material and environment that is originally expected to be corrosion-resistant. The maximum corrosion depth is an appropriate parameter to represent the corrosion state, and the average erosion rate is not very meaningful in this case. ...

*Some of the terms that refer to "localized corrosion" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…形態としては全面腐食でも腐食面の凹凸が激しい荒れた状態をとる場合には不均一腐食uneven corrosionと呼び,次の局部腐食のなかに加える場合もある。局部腐食localized corrosionは耐食材料に生ずる腐食で,本来,耐食性が期待される材料と環境の組合せのなかで,実際にも表面の大部分は耐食性を示しているのにもかかわらず,ある特定の場所に腐食の進行が集中する形で起こる腐食の形態をいう。腐食の状況を表すパラメーターとしては最大侵食深さが適しており,平均侵食率はこの場合あまり意味をもたない。…

※「localized corrosion」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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