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Surface Stabilization and Rust Structure of Weathering Steel |
SHI Jian( ), HU Xuewen, HE Bo, YANG Zheng, WANG Fei, GUO Rui |
Technology Center of Masteel, Ma'anshan Iron and Steel Co. Ltd., Ma'anshan 243000, China |
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Abstract Aiming at the problem of emerging traces of fluid flow containing rust products on the surface of the bare weathering steel during real service in atmosphere, a stabilizing treatment solution for the weathering steel was designed, and after stabilization treatment, the weathering steel was exposed in a real atmosphere for 0.5 a. The evolution process of the forming rust layer on the weathering steel was monitored and characterized. The corrosion kinetic curve shows that the weight variation of weathering steel gradually reaches a stable state through four stages, and the mass gain (loss) of each stage changes linearly. The enrichment of Cu and Cr in the rust increases the electrochemical protectiveness of the rust layer, reduces the corrosion rate and shortens the stabilization process of the bare weathering steel.
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Received: 11 October 2021
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Corresponding Authors:
SHI Jian
E-mail: stoneshi810@163.com
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About author: SHI Jian, E-mail: stoneshi810@163.com
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