What is galvanic corrosion?

Galvanic corrosion refers specifically to the deterioration of metals that occurs when two dissimilar metals are electrically connected in the presence of an electrolyte, such as water. This process is driven by an electrochemical reaction that occurs when an electrical current flows between these metals, leading to the accelerated deterioration of one of the metals, typically the less noble metal.

In a marine environment, this phenomenon is especially relevant due to the presence of seawater, which acts as an electrolyte, facilitating this corrosive process. Understanding galvanic corrosion is crucial for marine applications, as it can lead to significant structural damage over time if not properly managed. Protective measures, such as using sacrificial anodes or ensuring proper bonding techniques, are often implemented to mitigate the effects of galvanic corrosion.

The other choices do not accurately describe galvanic corrosion as they refer to different processes related to electrical systems and materials.