Materials Science and Engineering: An Introduction

Published by Wiley
ISBN 10: 1118324579
ISBN 13: 978-1-11832-457-8

Chapter 17 - Corrosion and Degradation of Materials - Questions and Problems - Page 722: 17.24

Answer

The corrosion rate will be higher on small anode-to-cathode area ratio than for a large ratio. This is because for some given current flow associated with the corrosion reaction, for a small area ratio, the current density at the anode will be greater than for a large ratio. The corrosion rate is proportional to the current density according to corrosion rate equation.

Work Step by Step

The corrosion rate will be higher on small anode-to-cathode area ratio than for a large ratio. This is because for some given current flow associated with the corrosion reaction, for a small area ratio, the current density at the anode will be greater than for a large ratio. The corrosion rate is proportional to the current density according to corrosion rate equation.
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