Novel Technique for the Application of Azole Corrosion Inhibitors on Copper Surface

A new method was proposed for the application of azole corrosion inhibitors on the surface of copper. This method depends on the vacuum pyrolysis of the inhibitor in the presence of copper specimens. Three azole inhibitors namely; benzotriazole (Azole (1)), N-[Benzotriazol-1-yl(phenyl)-methylene]-N-phenyl-hydrazine (Azole (2)) and N-[Benzotriazol-1-yl-(4-methoxy-phenyl)-methylene]-N-phenyl-hydrazine (Azole (3)) were tested. After pyrolysis copper samples were electrochemically tested in sulfide polluted salt water and compared to the behavior of copper tested in the sulfide polluted salt water containing dissolved benzotriazole. Results showed that copper specimens treated in the presence of Azoles (2) and (3) exhibit excellent corrosion resistance. Those samples could resist the poisoning effect of sulfide ions. Azole (1) shows good resistance at low sulfide concentration and failed at the high concentration. Surface investigation support the results of electrochemical tests. [doi:10.2320/matertrans.M2010141]

[1]  H. Takenouti,et al.  The influence of pH value on the efficiency of imidazole based corrosion inhibitors of copper , 2010 .

[2]  L. Kavitha,et al.  A study on new benzotriazole derivatives as inhibitors on copper corrosion in ground water , 2009 .

[3]  K. F. Khaled.  Experimental and atomistic simulation studies of corrosion inhibition of copper by a new benzotriazole derivative in acid medium , 2009 .

[4]  S. Milić,et al.  Films formed on copper surface in chloride media in the presence of azoles , 2009 .

[5]  S. Milić,et al.  Some aspects of copper corrosion in presence of benzotriazole and chloride ions , 2009 .

[6]  L. Bonaldo,et al.  Investigation of the inhibition effect of indole-3-carboxylic acid on the copper corrosion in 0.5 M H2SO4 , 2008 .

[7]  A. Kokalj,et al.  A comparative electrochemical and quantum chemical calculation study of BTAH and BTAOH as copper corrosion inhibitors in near neutral chloride solution , 2008 .

[8]  I. Milošev,et al.  Impedance and XPS study of benzotriazole films formed on copper, copper-zinc alloys and zinc in chloride solution , 2008 .

[9]  Y. A. Ibrahim,et al.  Gas-phase Thermolysis of Benzotriazole Derivatives. Part 4. Pyrolysis of 1-Acylbenzotriazole phenylhydrazones. Interesting Direct Routes Towards N-Aminobenzimidazoles , 2008 .

[10]  I. Ghayad,et al.  Effect of sulfide pollution on the stability of the protective film of benzotriazole on copper , 2007 .

[11]  Zachary D. Schultz,et al.  Infrared-visible sum frequency generation investigation of Cu corrosion inhibition with benzotriazole. , 2004, Analytical chemistry.

[12]  D. Tromans,et al.  Growth of Passivating CuBTA Films on Copper in Aqueous Chloride/Benzotriazole Solutions , 2002 .

[13]  M. J. Weaver,et al.  A Vibrational Structural Analysis of Benzotriazole Adsorption and Phase Film Formation on Copper Using Surface-Enhanced Raman Spectroscopy , 1999 .

[14]  G. Thornton,et al.  Probing molecular orientation in corrosion inhibition via a NEXAFS study of benzotriazole and related molecules on Cu(100) , 1998 .

[15]  Guo‐ding Zhou,et al.  A study of the electrochemical formation of Cu(I)-BTA films on copper electrodes and the mechanism of copper corrosion inhibition in aqueous chloride/benzotriazole solutions , 1994 .

[16]  L. Garverick,et al.  Corrosion in the Petrochemical Industry , 1994 .

[17]  H. Nishihara,et al.  Sers and impedance study of the equilibrium between complex formation and adsorption of benzotriazole and 4-hydroxybenzotriazole on a copper electrode in sulphate solutions , 1990 .

[18]  H. Nishihara,et al.  A SERS study on inhibition mechanisms of benzotriazole and its derivatives for copper corrosion in sulphate solutions , 1988 .

[19]  F. Heakal,et al.  Impedance studies of the inhibitive effect of benzotriazole on the corrosion of copper in sodium chloride medium , 1981 .