By Brian Goldie, Technology Publishing Co.; and Brian Wyatt, Corrosion Control Associates Ltd.

This article describes how cathodic protection and coatings can be employed to combat corrosion on metal structures, including steel pipelines. The authors discuss the basic mechanisms of corrosion, how CP fits in to stop or slow this process, the different kinds of CP systems, and how CP works in tandem with protective coatings to protect structures from corrosion....