The Corrosion Resistance of Weathering Steels in Atmospheric Exposure and Laboratory-accelerated Corrosion Tests

摘要

The corrosion resistances of weathering steel and structure steel in atmospheric exposure and laboratory-accelerated corrosion tests have been investigated. The results showed that the corrosion rate of weathering steel was lower compared with structure steel due to the alloying additions of Cr, Cu, P and Ni. The chemical composition and morphology of the rust layers of weathering steel and structure steel have been studied in the two experiments. The results showed that the rust layers in the steels under two tests were similar. It illuminated that the laboratory test preferably simulated the Jiangjin site circumstance. But the difference between the two tests was in existence.