Research on the Corrosion Resistance of High Strength Weathering Steel S450AW
The corrosion resistance of high-strength weathering steel S450AW was analyzed by using full immersion corrosion tests and scanning electron microscopy to investigate the effects of full immersion time,sulfuric acid concentration,and Cl-concentration on the full immersion corrosion of S450AW.The results showed that Cl-had a suppressive effect on the corrosion of S450AW in sodium chloride sulfate solution,and the higher the concentration of Cl-,the stronger the corrosion resistance of S450AW steel.With the increase of sulfuric acid concentration,the corrosion rate of S450AW showed a trend of first increasing and then decreasing.The increase of sulfuric acid concentration and the acceleration of hydrogen evolution reaction increased the thickness and density of the corrosion layer,enhancing the corrosion resistance of the material.
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