**Introduction to Chemical Corrosion and Protective Film Theory** This book delves into the fundamentals of electrochemical corrosion theory, exploring the intricacies of electrode potentials and the processes that drive electrochemical corrosion. It examines the various factors contributing to corrosion, the rate of corrosion distribution, and the methods used to investigate metal corrosion. Readers will find a comprehensive overview of corrosion indicators, laboratory techniques, and electrochemical methods, alongside approaches for testing in natural conditions and field trials. This work serves as an essential resource for anyone looking to understand the complexities of corrosion and its prevention.