Corrosion and wettability of PEO coatings on magnesium by addition of potassium stearate

Corrosion and wettability of PEO coatings on magnesium by addition of potassium stearate

Hydrophobic PEO coatings were fabricated in an electrolyte containing potassium stearate. The wetting behaviour of coated samples was studied using dynamic and static contact angle. Also, the corrosion behaviour of the samples was evaluated by polarization method. The dynamic contact angle and hyste...

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Main Authors: S.S. Farhadi, M. Aliofkhazraei, Gh. Barati Darband, A. Abolhasani, A. Sabour Rouhaghdam
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2017-06-01
Series:Journal of Magnesium and Alloys
Online Access:http://www.sciencedirect.com/science/article/pii/S2213956717300245
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spelling doaj-47cdd59ef6f3494d8d63c6f161864e9f2021-02-02T07:11:40ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672017-06-0152210216Corrosion and wettability of PEO coatings on magnesium by addition of potassium stearateS.S. Farhadi0M. Aliofkhazraei1Gh. Barati Darband2A. Abolhasani3A. Sabour Rouhaghdam4Department of Materials Science, Faculty of Engineering, Tarbiat Modares University, P.O.Box: 14115-143, Tehran, IranCorresponding author. Department of Materials Science, Faculty of Engineering, Tarbiat Modares University, P.O. Box: 14115-143, Tehran, Iran.; Department of Materials Science, Faculty of Engineering, Tarbiat Modares University, P.O.Box: 14115-143, Tehran, IranDepartment of Materials Science, Faculty of Engineering, Tarbiat Modares University, P.O.Box: 14115-143, Tehran, IranDepartment of Materials Science, Faculty of Engineering, Tarbiat Modares University, P.O.Box: 14115-143, Tehran, IranDepartment of Materials Science, Faculty of Engineering, Tarbiat Modares University, P.O.Box: 14115-143, Tehran, IranHydrophobic PEO coatings were fabricated in an electrolyte containing potassium stearate. The wetting behaviour of coated samples was studied using dynamic and static contact angle. Also, the corrosion behaviour of the samples was evaluated by polarization method. The dynamic contact angle and hysteresis of the contact angle for PEO coating were evaluated by Wilhelmy plate method. There was an increase in the contact angle of the nanocomposite and traditional PEO coatings when potassium stearate was added to the electrolyte up to 130°. The more hydrophobic coatings, showed more corrosion resistance in 3.5 wt.% NaCl solution. The synergistic effect of potassium stearate and nanoparticles increased the hydrophobicity because of assembling of fatty acid on ceramic powder. Keywords: Magnesium, Coatings, Wilhelmy plate, Plasma electrolytic oxidation, Corrosionhttp://www.sciencedirect.com/science/article/pii/S2213956717300245
collection DOAJ
language English
format Article
sources DOAJ
author S.S. Farhadi
M. Aliofkhazraei
Gh. Barati Darband
A. Abolhasani
A. Sabour Rouhaghdam
spellingShingle S.S. Farhadi
M. Aliofkhazraei
Gh. Barati Darband
A. Abolhasani
A. Sabour Rouhaghdam
Corrosion and wettability of PEO coatings on magnesium by addition of potassium stearate
Journal of Magnesium and Alloys
author_facet S.S. Farhadi
M. Aliofkhazraei
Gh. Barati Darband
A. Abolhasani
A. Sabour Rouhaghdam
author_sort S.S. Farhadi
title Corrosion and wettability of PEO coatings on magnesium by addition of potassium stearate
title_short Corrosion and wettability of PEO coatings on magnesium by addition of potassium stearate
title_full Corrosion and wettability of PEO coatings on magnesium by addition of potassium stearate
title_fullStr Corrosion and wettability of PEO coatings on magnesium by addition of potassium stearate
title_full_unstemmed Corrosion and wettability of PEO coatings on magnesium by addition of potassium stearate
title_sort corrosion and wettability of peo coatings on magnesium by addition of potassium stearate
publisher KeAi Communications Co., Ltd.
series Journal of Magnesium and Alloys
issn 2213-9567
publishDate 2017-06-01
description Hydrophobic PEO coatings were fabricated in an electrolyte containing potassium stearate. The wetting behaviour of coated samples was studied using dynamic and static contact angle. Also, the corrosion behaviour of the samples was evaluated by polarization method. The dynamic contact angle and hysteresis of the contact angle for PEO coating were evaluated by Wilhelmy plate method. There was an increase in the contact angle of the nanocomposite and traditional PEO coatings when potassium stearate was added to the electrolyte up to 130°. The more hydrophobic coatings, showed more corrosion resistance in 3.5 wt.% NaCl solution. The synergistic effect of potassium stearate and nanoparticles increased the hydrophobicity because of assembling of fatty acid on ceramic powder. Keywords: Magnesium, Coatings, Wilhelmy plate, Plasma electrolytic oxidation, Corrosion
url http://www.sciencedirect.com/science/article/pii/S2213956717300245
work_keys_str_mv AT ssfarhadi corrosionandwettabilityofpeocoatingsonmagnesiumbyadditionofpotassiumstearate
AT maliofkhazraei corrosionandwettabilityofpeocoatingsonmagnesiumbyadditionofpotassiumstearate
AT ghbaratidarband corrosionandwettabilityofpeocoatingsonmagnesiumbyadditionofpotassiumstearate
AT aabolhasani corrosionandwettabilityofpeocoatingsonmagnesiumbyadditionofpotassiumstearate
AT asabourrouhaghdam corrosionandwettabilityofpeocoatingsonmagnesiumbyadditionofpotassiumstearate
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