Anticorrosive coating structure, metal member having the same, anticorrosive treatment method and surface treatment agent

摘要

An anticorrosive coating structure having a structure in which an intermediate layer and a silane coupling layer are laminated in this order on the surface of a metal base material is formed. The intermediate layer is formed of an oxide or hydroxide of one or more metals selected from the group consisting of Ce, La and Y. It is desirable that the intermediate layer contains one or more elements selected from the group consisting of Mo, W and V. As a result, a surface having high corrosion resistance and excellent heat resistance, solvent resistance and slidability can be provided.