To understand the phenomenon of corrosion, it is necessary to know the basic principles of various disciplines like chemistry, metallurgy and material science. It is also necessary to have elementary knowledge of other branches of engineering. In the present system it is difficult to develop a curriculum that would cover all these aspects. "Principles and Prevention of Corrosion" aims at fulfilling these gaps so that the reader would know as to how and why the corrosion takes place. It is also useful for practicing engineers as well as design engineers who are concerned about corrosion. The book will also help the reader appreciate other works which are devoted to specific topics like cathodic protection, protective coatings and experiments techniques in corrosion.