AL-BASED ALLOY PLATED STEEL MATERIAL HAVING EXCELLENT POST-COATING CORROSION RESISTANCE

摘要

This aluminum-based alloy plated steel material comprises a steel material and a coating layer formed on the surface of the steel material. The coating layer contains, in mass%, 10% to 50% iron, and 3% to 15% silicon, and is provided with: an aluminum-based alloy plating layer formed on the surface of the steel material; a layer containing ZnO formed on the surface of the aluminum-based alloy plating layer; and a ZnAl2O4 layer that is formed between the aluminum-based alloy plating layer and the layer containing the ZnO, and has a thickness of 0.05 µm to 2 µm.