Effect of Nitrogen on Electrochemical Behavior of Weathering Steel in Corrosion Solution Simulated Industrial Atmosphere
In order to study the influence of nitrogen alloying on corrosion resistance of weathering steel, electrochemical tests were carried out in Solartron (1287+1260) electrochemical work station. Firstly, polarization curves were obtained by using potentiodynamic scanning method with scanning range of -0.3V～0).5V (SCE). After nitrogen alloying, E0 of weathering steel varied scarcely but I0 decreased and Rp increased remarkably. Secondly, alternating current impedance tests on coupons were caried out with frequency range of 106Hz～10-2Hz. According to the analysis from Z-View software, equivalent circuits have been solved. From experimental phenomena, a conclusion could be drawn that rust layer of nitrogen alloyed weathering steel was more compact and effective than that of traditional weathering steel, so the corrosion resistance of nitrogen alloyed weathering steel increased.
weathering steel nitrogen alloying polarization curve EIS
WANG Bo WANG De-yong LIU Cheng-jun JIANG Mao-fa
School of Materials and Metallurgy, Northeastern University, Shenyang 110004,China
国际会议
北京
英文
350-354
2007-09-18（万方平台首次上网日期，不代表论文的发表时间）