Corrosion protection by multilayer coating using layer-by-layer technique

SURFACE & COATINGS TECHNOLOGY

卷:205

Article

Gomes, E. C.¹ 

[1] ITA, Dept Chem, BR-12228900 Sao Jose Dos Campos, SP, Brazil

关键词: Polyaniline;    PVSS;    Layer-by-layer;    EIS;    2024 alloy;    Corrosion;   

DOI  :  10.1016/j.surfcoat.2010.10.061

来源: Elsevier

【 摘 要 】

In this work, polyaniline (PAni), a polycation, and poly (vinylsulfonic acid, sodium salt) (PVSS), a polyanion, were used for preparing multilayer thin films on AA2024 alloy surface using the layer-by-layer growth technique. The corrosion of AA2024 alloy surfaces coated with a number n (n = 0, 1, 5, 8, 10, 15) of multilayered thin films was investigated in 0.1 M NaCl aqueous solutions using potentiodynamic polarization, chronoamperometry and electrochemical impedance spectroscopy (EIS) techniques. These electrochemical tests were conducted at a temperature of (25 +/- 2) degrees C. Surface coated with 08 (PVSS / PAni) bilayers presented greater resistance to corrosion in the chloride containing environment. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.

【 授权许可】

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