Poly(3-octylthiophene) thermally treated as coating for corrosion protection of SS304 in sulfuric acid media

被引：5
作者：
Leon-Silva, U. [1 ]
Nicho, M. E. [2 ]
Gonzalez-Rodriguez, J. G. [2 ]
Chacon-Nava, J. G. [3 ]
Salinas-Bravo, V. M. [1 ]
机构：
[1] Inst Invest Elect, Temixco 62490, Morelos, Mexico
[2] UAEMor, Ctr Invest Ingn & Ciencias Aplicada, Cuernavaca 62209, Morelos, Mexico
[3] Ctr Invest Mat Avanzados, Chihuahua 31109, Chih, Mexico
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2013年 / 64卷 / 05期
关键词：
annealed; coatings; corrosion; poly(3-octylthiophene); stainless steel; MILD-STEEL; ELECTROCHEMICAL SYNTHESIS; THIN-FILMS; POLYTHIOPHENE; COMPOSITE; 304-STAINLESS-STEEL; POLYMER; HCL;
D O I：
10.1002/maco.201206538
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Poly(3-octylthiophene) (P3OT) was synthesized by direct oxidation of the 3-octylthiophene monomer using ferric chloride (FeCl3) as an oxidant. Using the drop-casting technique, P3OT coatings were deposited onto 304 type stainless steel electrodes. For the purpose of determining the effect of thermal annealing on the corrosion protection of stainless steel with P3OT coatings, the coated electrodes were thermally annealed for 30h at two different temperatures, 55 and 100 degrees C. The corrosion behavior of P3OT coated stainless steel was investigated in 0.5M sulfuric acid (H2SO4) at room temperature using potentiodynamic polarization curves (PPC), linear polarization resistance (LPR), and electrochemical impedance spectroscopy (EIS). The results indicated that the thermally treated P3OT coatings improved the corrosion resistance of the stainless steel in 0.5M H2SO4. The best corrosion protection was obtained by the P3OT coating annealed at 100 degrees C. In order to study the temperature effect on the morphology of the coatings before and after the corrosive environment and compare it with corrosion protection, atomic force microscopy (AFM) and scanning electronic microscopy (SEM) were used.
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页码：439 / 445
页数：7
相关论文
共 27 条
[1]  
BARRERA EW, 2006, REV COLOMBIANA FISIC, V38, P1331
[2]  
Barsoukov E, 2005, IMPEDANCE SPECTROSCOPY: THEORY, EXPERIMENT, AND APPLICATIONS, 2ND EDITION, pXII
[3]   Conducting polymers electrodeposited on active metals [J].
Biallozor, S ;
Kupniewska, A .
SYNTHETIC METALS, 2005, 155 (03) :443-449
[4]   Corrosion inhibition of mild steel by plant extract in dilute HCl medium [J].
Chauhan, L. R. ;
Gunasekaran, G. .
CORROSION SCIENCE, 2007, 49 (03) :1143-1161
[5]   Nano-composite of PtRu alloy electrocatalyst and electronically conducting polymer for use as the anode in a direct methanol fuel cell [J].
Choi, JH ;
Park, KW ;
Lee, HK ;
Kim, YM ;
Lee, JS ;
Sung, YE .
ELECTROCHIMICA ACTA, 2003, 48 (19) :2781-2789
[6]   STABILIZATION OF METAL-METAL OXIDE SURFACES USING ELECTROACTIVE POLYMER-FILMS [J].
DENG, Z ;
SMYRL, WH ;
WHITE, HS .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1989, 136 (08) :2152-2158
[7]  
Deng Z., 1991, J ELECTROCHEM SOC, V138, P1911, DOI 10.1149/1.2085899
[8]   Corrosion at metal interfaces - A study of corrosion rate and solution properties, including electrical conductance, viscosity, and density [J].
Dewan, AK ;
Valenzuela, DP ;
Dubey, ST ;
Dewan, AK .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2002, 41 (05) :914-921
[9]   Corrosion protection of stainless steel by separate polypyrrole electrode in acid solutions [J].
Hu, J. ;
Zhu, H. ;
Ma, Y. ;
Yi, T. ;
Mao, X. ;
Lin, A. ;
Gan, F. .
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, 2011, 62 (01) :68-73
[10]   Analysis on organic film degradation by dynamic impedance measurements [J].
Itagaki, Masayuki ;
Ono, Akira ;
Watanabe, Kunihiro ;
Katayama, Hideki ;
Noda, Kazuhiko .
CORROSION SCIENCE, 2006, 48 (11) :3802-3811
123