Abstract
Corrosion of a motor car is an electrochemical process caused by retained moisture and trapped water. De-icing salts spread on high ways accelerate the corrosion during winter. Flying stones and gravel from the roads damage the paint. Galvanized-, galvannealed and zinc primer coated steels are used successfully in main corroded parts, e. g. doors, front fenders, rocker panels. The coating itself gives the protection and when these steels are painted, the protective effect is more striking. The current change from anodic to cathodic electrophoretically deposited primer is also expected to bring about more resistance.
