Durability of Titanium-Clad Steel Plates as an Anti-Corrosion System

A new anti-corrosion system that uses titanium-clad steel plates has been developed and applied to the splash and tidal zones of the steel piers on the Trans-Tokyo Bay Bridge. The 4-mm-thick steel plates, clad with 1-mm-thick titanium, are welded to the steel piers. To investigate the durability of this method, steel pipes 60 cm in diameter were protected by this method, exposed to a marine environment, and monitored for five years. No corrosion of the titanium-clad steel plate was observed after five years, showing that the method has sufficient long-term durability.