Scratch-resistant anticorrosion sol-gel coating for the protection of AZ31 magnesium alloy via a low temperature sol-gel route

Heming Wang; Robert Akid; Mohamed Gobara

doi:10.1016/j.corsci.2010.04.002

Scratch-resistant anticorrosion sol-gel coating for the protection of AZ31 magnesium alloy via a low temperature sol-gel route

Heming Wang, Robert Akid, Mohamed Gobara

Research output: Contribution to journal › Article › peer-review

Abstract

A novel hybrid sol-gel/polyaniline coating has been developed for application onto an AZ31 magnesium alloy for corrosion protection. Electrochemical Impedance Spectroscopy in 3.5. wt% NaCl and diluted Harrison's solutions, along with salt spray tests showed that the coating possesses excellent corrosion resistance. The hybrid coating was modified by doping with silica nanoparticles (for scratch resistance) and cured at a low temperature of 75 °C. Whilst conventional sol-gel methods tend to limit the coating thickness values up to 10 μm, the new hybrid sol-gel/polyaniline system presented here allows thick coatings to be deposited, in this case, around 50-60 μm. © 2010 Elsevier Ltd.

Original language	English
Pages (from-to)	2565-2570
Number of pages	5
Journal	Corrosion Science
Volume	52
Issue number	8
DOIs	https://doi.org/10.1016/j.corsci.2010.04.002
Publication status	Published - Aug 2010

Keywords

A. AZ31
A. Magnesium alloy
A. Polyaniline
A. Sol-gel coating
C. Corrosion protection

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10.1016/j.corsci.2010.04.002

http://shura.shu.ac.uk/2494/

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title = "Scratch-resistant anticorrosion sol-gel coating for the protection of AZ31 magnesium alloy via a low temperature sol-gel route",

abstract = "A novel hybrid sol-gel/polyaniline coating has been developed for application onto an AZ31 magnesium alloy for corrosion protection. Electrochemical Impedance Spectroscopy in 3.5. wt% NaCl and diluted Harrison's solutions, along with salt spray tests showed that the coating possesses excellent corrosion resistance. The hybrid coating was modified by doping with silica nanoparticles (for scratch resistance) and cured at a low temperature of 75 °C. Whilst conventional sol-gel methods tend to limit the coating thickness values up to 10 μm, the new hybrid sol-gel/polyaniline system presented here allows thick coatings to be deposited, in this case, around 50-60 μm. {\textcopyright} 2010 Elsevier Ltd.",

keywords = "A. AZ31, A. Magnesium alloy, A. Polyaniline, A. Sol-gel coating, C. Corrosion protection",

author = "Heming Wang and Robert Akid and Mohamed Gobara",

year = "2010",

month = aug,

doi = "10.1016/j.corsci.2010.04.002",

language = "English",

volume = "52",

pages = "2565--2570",

journal = "Corrosion Science",

issn = "1879-0496",

publisher = "Elsevier BV",

number = "8",

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TY - JOUR

T1 - Scratch-resistant anticorrosion sol-gel coating for the protection of AZ31 magnesium alloy via a low temperature sol-gel route

AU - Wang, Heming

AU - Akid, Robert

AU - Gobara, Mohamed

PY - 2010/8

Y1 - 2010/8

N2 - A novel hybrid sol-gel/polyaniline coating has been developed for application onto an AZ31 magnesium alloy for corrosion protection. Electrochemical Impedance Spectroscopy in 3.5. wt% NaCl and diluted Harrison's solutions, along with salt spray tests showed that the coating possesses excellent corrosion resistance. The hybrid coating was modified by doping with silica nanoparticles (for scratch resistance) and cured at a low temperature of 75 °C. Whilst conventional sol-gel methods tend to limit the coating thickness values up to 10 μm, the new hybrid sol-gel/polyaniline system presented here allows thick coatings to be deposited, in this case, around 50-60 μm. © 2010 Elsevier Ltd.

AB - A novel hybrid sol-gel/polyaniline coating has been developed for application onto an AZ31 magnesium alloy for corrosion protection. Electrochemical Impedance Spectroscopy in 3.5. wt% NaCl and diluted Harrison's solutions, along with salt spray tests showed that the coating possesses excellent corrosion resistance. The hybrid coating was modified by doping with silica nanoparticles (for scratch resistance) and cured at a low temperature of 75 °C. Whilst conventional sol-gel methods tend to limit the coating thickness values up to 10 μm, the new hybrid sol-gel/polyaniline system presented here allows thick coatings to be deposited, in this case, around 50-60 μm. © 2010 Elsevier Ltd.

KW - A. AZ31

KW - A. Magnesium alloy

KW - A. Polyaniline

KW - A. Sol-gel coating

KW - C. Corrosion protection

U2 - 10.1016/j.corsci.2010.04.002

DO - 10.1016/j.corsci.2010.04.002

M3 - Article

SN - 1879-0496

VL - 52

SP - 2565

EP - 2570

JO - Corrosion Science

JF - Corrosion Science

IS - 8

ER -

Scratch-resistant anticorrosion sol-gel coating for the protection of AZ31 magnesium alloy via a low temperature sol-gel route

Abstract

Keywords

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