ANTI-CORROSIVE COATING STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a chromium-free coating structure capable of achieving sufficient anti-corrosive performance.SOLUTION: A coating structure 20 has: a first coating 21 that coats a surface 10A of a base material 10, a target of anti-corrosive treatment, and contains a sacrificial anti-corrosive agent greater in ionization tendency than the surface 10A; and a second coating 22 put on the first coating 21. The second coating 22 contains a corrosion inhibitor 221 that can be eluted from the second coating 22 and adheres to the base material 10 exposed due to breakage of the first coating 21 and the second coating 22.SELECTED DRAWING: Figure 2