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通常是马蹄形状的,脚趾指向上游的,有时候也形成细长的坑槽状的在下游末端有从下部切开倾向的坑点。在铜金属表面上形成的大得足以由于压力变化或者被打碎或者被弄歪曲变形的空气气泡对这种类型的腐蚀起加速器的作用。活性侵蚀的冲击坑槽没有腐蚀生成物。在盐水或化学溶液或淡水在铜
Usually horseshoe-shaped, with the toes pointed upstream and sometimes also with slender, pit-shaped pits with a tendency to cut from the lower at the downstream end. An air bubble formed on the surface of the copper metal large enough to be deformed or crushed or distorted due to pressure acts as an accelerator against this type of corrosion. Impact erosion of the pit does not corrode the product. In saline or chemical solution or fresh water in copper