To address the more stringent corrosion requirements, a number of coating processes have been developed. These include electroplating, hot-dip, galvanizing and sherardizing. Though these newer coating processes improve corrosion resistance, they still incurr the following problems: poor adhesion of the paint to the coating and destruction of the paint film after white corrosion begins to form. The first problem occurs with electroplating and hot-dip coatings, while the second occurs for all types of coatings, including mechanical galvanizing and sherardizing.