resumo
Zn-Al layered double hydroxide (LDH) film has been directly grown on aluminum-zinc alloy coating at the conditions of either absence or presence of carbonate anions. Based on the comparative analysis of chemical composition and crystal structure parameters of the obtained LDH phase, arrangements of the intercalated species in the interlayer were modeled. It was found that the LDH phase formed on Zn-Al alloy coating in different solutions is characterized by the cations ratio Zn/Al similar to 1 and intercalated with OH- anion (and not with CO32-). The likely formation mechanism of such an LDH phase with low anion exchangeability is proposed. (C) 2013 The Electrochemical Society. All rights reserved.
palavras-chave
DIFFRACTION; BEHAVIOR
categoria
Electrochemistry; Materials Science
autores
Salak, AN; Lisenkov, AD; Zheludkevich, ML; Ferreira, MGS
nossos autores
Aleksey Lisenkov
Bolseiro de pós-Doutoramento
Andrei Salak
Investigador
Mário Guerreiro Silva Ferreira
Professor Catedrático
Mikhail Zheludkevich
Investigador Principal ConvidadoProjectos
Modeling of atmospheric corrosion of steel protected by aluminium based alloys applied by hot dip processing - AtCorAS (AtCorAS)
Corrosion adn corrosion protection in multi-material systems (PTDC/CTM/108446/2008)
RMNE-UA-National Network of Electron Microscopy (REDE/1509/RME/2005 )
agradecimentos
The authors thank Dr. S. V. Lamaka for useful discussion. This work was supported by the projects RFSR-CT-2011-00015 (ATCO-RAS), PTDC/CTM/108446/2008 and REDE/1509/RME/2005. A. D. L. acknowledges the Foundation for Science and Technology (FCT-Portugal, grant SFRH/BD/78628/2011) for their financial support.