Corrosion Resistance of Zinc-based Coating for Hot Forming and Its Comparison with Aluminum-silicon Coating

摘要

Hot formed part is widely used in the automotive industry to meet increasing requirements of safety and light weight. However, the corrosion protection is also a major aspect for automotive materials. For this reason, aluminized, galvanized and galvannealed hot forming steels were developed. Here the corrosion resistance of hot formed zinc-based coating was evaluated by cycle corrosion test. And it was compared with aluminum-silicon coated steel.