What is a primary function of cathodic protection?

What is a primary function of cathodic protection?

• A. To eliminate all corrosion
• B. To reduce corrosion rates
• C. To increase voltage
• D. To prevent electrical surges

Answer: (B)

A primary function of cathodic protection is to reduce corrosion rates. Cathodic protection achieves this by making the metal surface a cathode in an electrochemical cell, which counteracts the oxidation reactions that lead to corrosion. This method is particularly effective for structures such as pipelines, tanks, and ships, where corrosion can lead to significant material loss and structural failure over time. While it is important to note that cathodic protection cannot completely eliminate all corrosion, it significantly minimizes the corrosion process, allowing for longer service life and reduced maintenance costs for metal structures. Therefore, focusing on reducing corrosion rates reflects the practical implementation and expected outcomes of cathodic protection systems in various industrial applications.

A primary function of cathodic protection is to reduce corrosion rates. Cathodic protection achieves this by making the metal surface a cathode in an electrochemical cell, which counteracts the oxidation reactions that lead to corrosion. This method is particularly effective for structures such as pipelines, tanks, and ships, where corrosion can lead to significant material loss and structural failure over time.

While it is important to note that cathodic protection cannot completely eliminate all corrosion, it significantly minimizes the corrosion process, allowing for longer service life and reduced maintenance costs for metal structures. Therefore, focusing on reducing corrosion rates reflects the practical implementation and expected outcomes of cathodic protection systems in various industrial applications.