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Adsorption behaviours of GLY on A3 steel

Gao Yanmin,Zhou Hongjian,Li Xiaowei(School of Materials Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang Jiangsu 212003,China)  
The adsorption behavior of GLY on A3 steel as well as its influence on corrosion behavior of A3 steel in the solution of NaHCO3 were discussed by polarization curves and electrochemical impedance spectroscopy(EIS).The results indicate that Glycine forms multilayer adsorption on the surface of sample.The process of desorption appears.Its mechanism of corrosion inhibition displays geometry coating effect.When GLY concentration reaches 100 mg/L,the best efficiency of corrosion inhibition exists.
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