The corrosion behavior of low-carbon steel(CS),P-bearing steel(PS)and P-RE weathering steel(P-REWS)exposed for two years in Jiangjin of China was investigated.The results showed that during 2-year exposure test,corrosion data of the experimental steels followed the bilogarithmic equation,and the average corrosion depth of PS and P-REWS was decreased by 19.5% and 28.2% respectively compared with that of CS.Scanning electron microscope,electrochemical impedance spectroscope and Fourier transform infrared spectroscope were used to characterize the corrosion products.The research results showed that P in steel could promote the formation of an amorphous ferric oxyhydroxide layer near the substrate.The addition of RE could effectively increase the charge transportation resistance of rust.
MI Feng-yiWANG Xiang-dongLIU Zhi-puWANG BingPENG YunTAO Dong-ping
