Beneficial role of Sn in rapid rust stabilization of weathering steel in marine environments  

作　　者：Liu Yang Xuequn Cheng Xiaogang Li 

机构地区：[1]Institute of Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第5期1141-1150,共10页矿物冶金与材料学报(英文版)

基　　金：support of the National Natural Science Foundation of China(No.52171063).

摘　　要：Weathering steel exhibits excellent corrosion resistance and is widely used in bridges,towers,railways,highways,and other engineering projects that are exposed to the atmosphere for long periods of time.However,before the formation of stable rust layers,weathering steel is prone to liquid rust sagging and spattering,leading to environmental pollution and city appearance concerns.These factors limit the application and development of weathering steel.In this study,a rapid and environmentally friendly method was de-veloped by introducing alloying elements,specifically investigating the role of Sn in the rapid stabilization of rust layers in marine atmo-spheric environments.The rust layer formed on weathering low-alloy steel exposed to prolonged outdoor conditions and laboratory im-mersion experiments was explored using electron probe micro-analyzer(EPMA),micro-Raman,X-ray photoelectron spectroscopy(XPS),and electrochemical measurements.Results showed an optimal synergistic effect between Sn and Cr,which facilitated the accelerated densification of the rust layer.This beneficial effect enhanced the capability of the rust layer to resist Cl^(-)erosion and improved the protec-tion performance of the rust layer.

关 键 词：marine atmosphere rapid stabilization weathering steel SN 

分 类 号：TG172[金属学及工艺—金属表面处理]