Influence of preparation conditions of Layered Double Hydroxide conversion films on corrosion protection

被引：135
|
作者：
Tedim, J. [1 ]
Zheludkevich, M. L. [1 ]
Bastos, A. C. [1 ]
Salak, A. N. [1 ]
Lisenkov, A. D. [1 ]
Ferreira, M. G. S. [1 ]
机构：
[1] Univ Aveiro, Dep Mat & Ceram Engn, CICECO, P-3810193 Aveiro, Portugal
来源：
ELECTROCHIMICA ACTA | 2014年 / 117卷
关键词：
LDH conversion films; Corrosion; Active Protection; EIS; ALUMINUM-ALLOY; MG ALLOY; COATINGS; INHIBITION; RESISTANCE; CHITOSAN; NANOCONTAINERS;
D O I：
10.1016/j.electacta.2013.11.111
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In this work, layered double hydroxide (LDH) conversion films were grown on aluminium alloy 2024 substrates. The effect of experimental conditions on the growth of LDH conversion films, including concentration of reactants and presence of corrosion inhibitor, was investigated. The protective performance provided by LDH films was assessed by electrochemical impedance spectroscopy (EIS), and rationalised in terms of structural and morphological characteristics surveyed by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The results show that corrosion protection increases when corrosion inhibitors (vanadates) are intercalated in LDHs and dilute solutions of Zn2+ are used to grow LDHs, (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：164 / 171
页数：8
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