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首页> 外文期刊>Applied Surface Science >Electrodeposition of polyaniline, poly(2-iodoaniline), and poly(aniline-co-2-iodoaniline) on steel surfaces and corrosion protection of steel
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Electrodeposition of polyaniline, poly(2-iodoaniline), and poly(aniline-co-2-iodoaniline) on steel surfaces and corrosion protection of steel

机译：聚苯胺，聚（2-碘苯胺）和聚（苯胺-co-2-碘苯胺）在钢表面的电沉积及钢的腐蚀防护

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摘要

Polyaniline (PANi), poly(2-iodoaniline) (PIANi), and poly(aniline-co-2-iodoaniline) (co-PIANi) were synthesized using cyclic voltammetry in acetonitrile solution containing tetrabuthylammonium perchlorate (TBAP) and perchloric acid (HClO4) on 304-stainless steel electrodes. Adherent and black polymer films were obtained on the electrodes. The structure and properties of these polymer films were characterized by FTIR and UV-vis spectroscopy and electrochemical method. The corrosion performance of PANi, PIANi, and co-PIANi coated electrodes were investigated in 0.5 M hydrochloric acid (HCl) solutions by potentiodynamic polarization technique, open circuit potential-time curves and electrochemical impedance spectroscopy, EIS. It was found that the PANi film could provide much better protection than PIANi, and co-PLANi and PANi films have barrier property as well as acting as passivator. On the other hand PIANi and co-PIANi films are acting as barrier coatings which were related with the prevention of cathodic reaction taking place at metalelectrolyte interface. EIS measurement shows that every coating gives protection efficiency of greater than 75% after 48 h of immersion time in corrosive test solution. (c) 2005 Elsevier B.V. All rights reserved.
机译：在含有高氯酸四丁铵盐（TBAP）和高氯酸（HClO4）的乙腈溶液中使用循环伏安法合成了聚苯胺（PANi），聚（2-碘苯胺）（PIANi）和聚（苯胺-co-2-碘苯胺）（co-PIANi） ）在304不锈钢电极上。在电极上获得了粘附的黑色聚合物薄膜。这些聚合物薄膜的结构和性能通过FTIR和UV-可见光谱和电化学方法表征。通过电位动力学极化技术，开路电势-时间曲线和电化学阻抗谱EIS，研究了在0.5 M盐酸（HCl）溶液中PANi，PIANi和co-PIANi涂层电极的腐蚀性能。已发现，PANi膜可提供比PIANi更好的保护，并且co-PLANi和PANi膜具有阻隔性能并可用作钝化剂。另一方面，PIANi和co-PIANi膜用作阻挡涂层，与防止在金属电解质界面发生阴极反应有关。 EIS测量表明，在腐蚀性测试溶液中浸泡48小时后，每种涂层的保护效率均高于75％。 （c）2005 Elsevier B.V.保留所有权利。

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