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copper couple corrosion

2025-12-19View Original

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When dissimilar metals come into contact with each other or are connected through other conductors, and are in the same medium, it can cause local corrosion at the points of contact. For metals with a lower potential, the dissolution rate increases, while for metals with a higher potential, the dissolution rate decreases. This type of corrosion is known as galvanic corrosion, or contact corrosion, dual-metal corrosion. See the diagram of galvanic corrosion below

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