In this study, a calcium-aluminum-layered double hydroxide (CaAl-LDH) thin film was grown on an AA6082 aluminum alloy, for the very first time, by using a facile in situ growth method in an effort to investigate the CaAl-LDH structural geometry and corresponding corrosion resistance properties. The structure and surface morphologies of the CaAl-LDH thin film were studied using a scanning electron microscope (SEM) equipped with an EDS detector, a transmission electron microscope (TEM), an X-ray diffractometer (XRD), and a Fourier transform infrared spectrometer (FT-IR), while the electron impendence spectra (EIS) and potentiodynamic curves were recorded to understand the LDH anticorrosion behavior. The findings demonstrated that thin, well-developed CaAl-LDH coatings with different surface morphologies can be prepared with eminent corrosion resistance properties. Specifically, the CaAl-LDH thin film synthesized at 140 °C-24 h synthetic conditions showed a large impedance modulus of 7.3 Ω cm2 at 0.01 Hz (|Z|f = 0.01 Hz), along with a low corrosion current density (Icorr) of 0.0007 μA cm-2, while a vertically orientated rod like structure with a uniform surface morphology was observed.

In situ growth of a CaAl-NO3--layered double hydroxide film directly on an aluminum alloy for corrosion resistance / Iqbal, Muhammad Ahsan; Sun, Luyi; Lachance, Anna Marie; Ding, Hao; Fedel, Michele. - In: DALTON TRANSACTIONS. - ISSN 1477-9226. - 49:13(2020), pp. 3956-3964. [10.1039/c9dt01773a]

In situ growth of a CaAl-NO3--layered double hydroxide film directly on an aluminum alloy for corrosion resistance

Iqbal, Muhammad Ahsan;Fedel, Michele
2020-01-01

Abstract

In this study, a calcium-aluminum-layered double hydroxide (CaAl-LDH) thin film was grown on an AA6082 aluminum alloy, for the very first time, by using a facile in situ growth method in an effort to investigate the CaAl-LDH structural geometry and corresponding corrosion resistance properties. The structure and surface morphologies of the CaAl-LDH thin film were studied using a scanning electron microscope (SEM) equipped with an EDS detector, a transmission electron microscope (TEM), an X-ray diffractometer (XRD), and a Fourier transform infrared spectrometer (FT-IR), while the electron impendence spectra (EIS) and potentiodynamic curves were recorded to understand the LDH anticorrosion behavior. The findings demonstrated that thin, well-developed CaAl-LDH coatings with different surface morphologies can be prepared with eminent corrosion resistance properties. Specifically, the CaAl-LDH thin film synthesized at 140 °C-24 h synthetic conditions showed a large impedance modulus of 7.3 Ω cm2 at 0.01 Hz (|Z|f = 0.01 Hz), along with a low corrosion current density (Icorr) of 0.0007 μA cm-2, while a vertically orientated rod like structure with a uniform surface morphology was observed.
2020
13
Iqbal, Muhammad Ahsan; Sun, Luyi; Lachance, Anna Marie; Ding, Hao; Fedel, Michele
In situ growth of a CaAl-NO3--layered double hydroxide film directly on an aluminum alloy for corrosion resistance / Iqbal, Muhammad Ahsan; Sun, Luyi; Lachance, Anna Marie; Ding, Hao; Fedel, Michele. - In: DALTON TRANSACTIONS. - ISSN 1477-9226. - 49:13(2020), pp. 3956-3964. [10.1039/c9dt01773a]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/302279
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