In galvanic corrosion, which component tends to be protected from corrosion?

In galvanic corrosion, which component tends to be protected from corrosion?

• A. Anode
• B. Cathode
• C. Uniform Surface Corrosion
• D. Pitting

Answer: (B)

In galvanic corrosion, when two metals are in electrical contact in an electrolyte, electrons flow from the more active metal to the more noble metal. The active metal becomes the anode and corrodes, while the noble metal acts as the cathode and is protected from corrosion. So the component that tends to be protected is the cathode. The anode would be the one that corrodes, and uniform surface corrosion or pitting describe patterns of damage rather than a protected component.

In galvanic corrosion, when two metals are in electrical contact in an electrolyte, electrons flow from the more active metal to the more noble metal. The active metal becomes the anode and corrodes, while the noble metal acts as the cathode and is protected from corrosion. So the component that tends to be protected is the cathode. The anode would be the one that corrodes, and uniform surface corrosion or pitting describe patterns of damage rather than a protected component.