Where is damage to wood typically found in cases of galvanic corrosion?

Damage to wood in cases of galvanic corrosion is typically found near the cathode. In a galvanic cell, two different metals are connected in the presence of an electrolyte, which leads to a flow of electrical current. The anode is where the electrochemical reaction that results in corrosion takes place, while the cathode undergoes a reduction reaction.

In the specific scenario with wood, the concern arises when it is in contact with metal components that are part of a galvanic system. The cathodic area, where lesser corrosion occurs, can still lead to significant moisture accumulation and deterioration, especially if the wood is improperly shielded or protected. Over time, this moisture can foster decay processes, leading to damage to the wood in proximity to the metallic elements rather than the metal that is corroding at the anode.

This understanding helps illustrate why the focus is on areas close to the cathode and suggests that protective measures should prioritize both the metal parts and their interaction with wood to prevent degradation effectively.