Technician A says galvanic corrosion is a desirable form of corrosion. Technician B says the zinc coating on galvanized steel is a form of sacrificial corrosion. Who is correct?

Question

Quizplus · Accepted Answer

Technician B is correct because the zinc coating on galvanized steel acts as a sacrificial anode to protect the underlying steel from corrosion, which is a deliberate use of sacrificial corrosion. Galvanic corrosion is not desirable as it involves the deterioration of metals when they are in electrical contact in the presence of an electrolyte.

Technician a Says Galvanic Corrosion Is a Desirable Form of Corrosion