Research and development of weathering resistant bridge steel of Shougang

2017 3rd International Conference on Applied Materials and Manufacturing Technology

Yang, Yongda^1,2 ; Wang, Yanfeng^1,2 ; Huang, Leqing^1,2 ; Di, Guobiao^1,2 ; Ma, Changwen^1,2 ; Ma, Qingshen^1,2

Shougang Research Institute of Technology, Beijing

100043, China^1

Beijing Key Laboratory of Green Recyclable Process for Iron and Steel Production Technology, Beijing

100043, China^2

关键词: Composition design;    Corrosion reaction;    Guanting reservoir;    Percentage composition;    Properties and microstructures;    Research and development;    Rust layer structures;    Weathering-resistant;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/242/1/012059/pdf
DOI  :  10.1088/1757-899X/242/1/012059

来源: IOP

【 摘 要 】

To introduce the composition design and mechanical properties and microstructure of the weathering bridge steel which would be used for bridge of Guanting reservoir. We adopt cyclic immersion corrosion test to study corrosion resistance difference of weathering bridge steel and common bridge steel. At the same corrosion time, the weight loss and corrosion rate of weathering bridge steel are lower than the common bridge steel's. Testing phase composition of rust layer by X-ray diffraction, two kinds of test steel's rust layer is mainly composed of Goethite and Fe3O4and Fe2O3. At the same corrosion time, the percentage composition of goethite in rust layer of weathering bridge steel are significantly higher than common bridge steel's, the higher goethite content is, the compacter rust layer structure is. The compact rust layer would prevent the water and air passing the rust layer, and then preventing the further corrosion reaction, improving the corrosion resistance performance of weathering bridge steel.