Metal coatings are used to impart a variety of properties to components that aren’t otherwise present in the base metal itself. These properties can include improved wear, corrosion, or chemical resistance, they can be applied for aesthetic reasons, to help to reduce friction, fretting, and galling, or for a variety of other reasons. Coatings can be a cost-effective way of meeting performance requirements without having to resort to the use of an exotic or expensive base metal.
