In automotive industry, zinc coated steel is largely used thanks to its high corrosion resistance and sacrificial protection. However, zinc layer must be thick to assure a good protection. As a consequence, consumption of zinc is very intensive and coating prices are increasing. A large number of new coated steel formulations have consequently been studied for many years in order to reduce the consumption of zinc and its cost in coatings. Several studies have shown that the addition of magnesium into the metallic coating allows to improve corrosion resistance without increasing coating thickness.
展开▼
