Electrochemical Synthesis of Polyaniline and its Anticorrosion Performance for X70 Steel

Abstract:

The effects of preparation conditions on the synthesis of polyaniline and its anticorrosion performance were investigated using single-factor method. The experimental results showed that the better conditions for electrochemical synthesis of polyaniline films are 0.5 M aniline, 0.8 M H2SO4, range of sweep voltage 1.6 V~-0.3V (Init =-0.3V), sensitivity 1.e-002, sweep segment 8, scan rate 0.1V/s. The anticorrosion performances of polyaniline films were investigated in 5% and 2.5% MgCl2 solutions respectively. Polarization and AC impedance technique tests proved that the polyaniline film owned a better anticorrosion performance to X70 in 2.5% MgCl2 solution than the denser one. And, it was found that polyaniline films adhered to X70 steel exhibited good barrier properties for a prolonged corrosion process. The above results provided some experimental data and theoretical guidance of polyaniline anticorrosion properties for some metals, especially for metals using in oil and natural gas industry.

• Periodical: Advanced Materials Research (Volume 534)
• Pages: 82-85
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.534.82
• Online since: June 2012
• Authors: Wen Jun Fan, Jia Li Mu, Shao Yun Shan, Li Hong Jiang, Ya Ming Wang, Qing Ming Jia
• Keywords: Anticorrosion, Electrochemical, Polyaniline, X70 Steel

References

[1] W. DeBerry: J. Electrochem. Soc. Vol. 132(1985), p.102.

[2] A. Meneguszi, M.C. Pharm, J.C. Lacroix, B. Piro, A. Ademier, C.A. Fer-reira, P.C. Laceze: J. Electrochem. Soc. Vol. 148(2001), p.121.

[3] G. Kousik, S, Pitchumani, N. G. Renganathan: Prog. Org. Coat. Vol. 43(2001), p.286.

[4] J.I. Iribarren, F. Liesa, F. Cadena, L. Bilurbina: Mater. Corr. Vol. 55(2004), p.689.

[5] S. Sathiyanarayanan, S. Muthukrishnan, G. Venkatachari: Prog. Org. Coat. Vol. 55(2006), p.5.

[6] A.A. Hermas, M. Nakayama, K. Ogura: Electrochim. Acta. Vol. 50(2005), p.3640.

[7] C.K. Tan, D.J. Blackwood: Corros. Sci. Vol. 45(2003), p.545.