The anticorrosion action of EDA on copper in dilute HCl solution and the effect of sulfide ions on the inhibiting efficiency were studied by the Tafel plot method.The corrosion potential of Cu shifted to more positive value and the corrosion current density decreased after the addition of Na_(2)S to the solution.The results indicated that sulphide ions could increase the inhibiting efficiency of EDA because of the synergistic inhibition effect between EDA and Na_2S,resulting from the adsorption of HS~(-)on the surface of Cu,facilitated the adsorption of EDA to form a highly protective adsorbed layer which prevented Cu from corrosion.


Copper, Corrosion inhibitor, EDA, Na_(2)S

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[1]Sh i Zh ilong(史志龙),Pang Zhengzh i(庞正智).E ffi-c iency of arylsubstituted-benzim idazoles as copper corro-sion inh ib itors in HC l solution[J].Journal of Be ijing U-n iversity of Chem ical Technology,2002,29(2):52~54.
[2]Helena O tm ac ic,Em a Stupn isek-D isac.Copper corrosioninh ib itors in near neutral m ed ia[J].E lectroch im ica Ac-ta,2002,48:985~991.
[3]Zhang Daquan(张大全),Goo L ixin(高立新),ZhouGuod ing(周国定)et al.Corrosion inh ib ition of 2-M er-captobenzim idazole and 1-Phenyl-5-m ercapto-tetrazolefor copper in HC l solution[J].Journal of East Ch inaUn iversity of Sc ience and Technology,2002,28:429~431.
[4]Stupn isek-L isac E,Kop jar D,M ance A D.The inh ib i-tionof copper corrosion in ac id m ed ia[J].Bu lletin of E-lectrochem istry,1998,14(1):10~15.
[5]Ashour E A,Hegazy H S,Ateya B G.E ffects of su lfi-de ions on the integrity of the protective film of benzotri-azole on alpha brass in salt water[J].Journal of the-E lectrochem ical Soc iety,2000,147(5):1767~1769.
[6]D irk J,Joach im S,P ickeringH W.App lication of aquar-tz-crystalm icrobalance to the study of copper corrosionin ac id-solution inh ib ited by triazole-iodode protective,film s[J].Journal of the E lectrochem ical Soc iety,1995,142(7):2170~2173.
[7]Zhou Zh ihu i(周志辉).Research on corrosion ru le of-copper in pure water and app lication of inh ib itors[J].North Ch ina E lectric Power,2004,4:22.
[8]Sury P.S im ilarities in the corrosion behaviour of iron,cobalt and n ickel in ac id solution.A review w ith spe-c ialreference to the su lph ide adsorption[J].CorrosionSc ience,1976,16:879~901.



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