Effect of thermal treatment corrosion resistance of polyaniline in H2SO4–HF acid mixture solution.pdf

Corrosion Science 51 (2009) 3007–3013 Contents lists available at ScienceDirect Corrosion Science journal homepage: /locate/corsci Effect of thermal treatment on the corrosion resistance of polyaniline in H SO –HF 2 4 acid mixture solution N.D. Nam a, J.G. Kim a,*, Y.J. Lee b, Y.K. Son b a Department of Advanced Materials Engineering, Sungkyunkwan University, 300 Chunchun-Dong, Jangan-Gu, Suwon 440-746, South Korea b Department of Chemistry, Sungkyunkwan University, 300 Chunchun-Dong, Jangan-Gu, Suwon 440-746, South Korea a r t i c l e i n f o a b s t r a c t Article history: The corrosion resistance and conduction properties of polyaniline (PANi)-coated 316L stainless steel were Received 30 April 2009 improved by the thermal treatment. Electrochemical analyses of the PANi specimens demonstrated Accepted 11 August 2009 excellent corrosion resistance with high protection efficiency ( P96.21%) and charge transfer resistance, Available online 19 August 2009 2 as well as a very low corrosion current density (1 lA/cm ). In addition, it also performed better conduc- 2 tive propert