材料期刊网

Industrial Atmospheric Corrosion Resistance of PRE Weathering Steel

MI Fengyi , WANG Xiangdong , LIU Zhipu , WANG Bing , PENG Yun , TAO Dongping

钢铁研究学报(英文版)

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.

关键词: weathering steel , industrial atmosphere , rust layer , synergistic effect