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首页> 外文期刊>Journal of Applied Polymer Science >Electrochemical synthesis and corrosion protection properties of poly(o-toluidine) coatings on low carbon steel
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Electrochemical synthesis and corrosion protection properties of poly(o-toluidine) coatings on low carbon steel

机译：低碳钢上聚（邻甲苯胺）涂层的电化学合成与腐蚀防护性能

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摘要

Uniform and strongly adherent poly(o-toluidine) (POT) coatings have been synthesized on low carbon steel (LCS) substrates by electrochemical polymerization (ECP) of o-toluidine under cyclic voltammetric conditions from an aqueous sodium tartrate solution. Cyclic voltammetry (CV), UV-visible absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) measurements, and scanning electron microscopy (SEM) were used to characterize these coatings, which indicates that the sodium tartrate is a suitable medium for the ECP of o-toluidine and it occurs without noticeable dissolution of LCS. Corrosion protection properties of the POT coatings were evaluated in aqueous 3% NaCl by the potentiodynamic polarization measurements and CV. The result of the potentiodynamic polarization demonstrates that the POT coating has ability to protect the LCS against corrosion. The corrosion potential was about 334 mV more positive in aqueous 3% NaCl for the POT-coated LCS than that of bare LCS and reduces the corrosion rate of LCS almost by a factor of 50. (c) 2005 Wiley Periodicals, Inc.
机译：在酒石酸钠水溶液中，在循环伏安条件下，通过邻甲苯胺的电化学聚合（ECP）在低碳钢（LCS）基材上合成了均匀且附着力强的聚邻甲苯胺（POT）涂层。循环伏安法（CV），紫外可见吸收光谱法，傅立叶变换红外光谱法（FTIR），X射线衍射（XRD）测量和扫描电子显微镜（SEM）表征了这些涂层，表明酒石酸钠是邻甲苯胺ECP的合适介质，它在没有LCS明显溶解的情况下发生。通过电位动力学极化测量和CV在3％NaCl水溶液中评估了POT涂层的防腐性能。电位动力极化的结果表明，POT涂层具有保护LCS免受腐蚀的能力。对于POT涂层的LCS，在3％NaCl水溶液中的腐蚀电位比裸LCS的腐蚀电位高约334 mV，并且使LCS的腐蚀速率几乎降低了50倍。（c）2005 Wiley Periodicals，Inc.

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