Regularities of the Formation of a Green Superhydrophobic Protective Coating on an Aluminum Alloy after Surface Modification with Stearic Acid Solutions

It has been shown that solutions of stearic acid in a dimethyl sulfoxide–water binary mixture allow superhydrophobic protective coatings to be created on an aluminum alloy surface with a minimum impact on the environment. The superhydrophobicity and self-cleaning ability of the coating that we devel...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Aleksey Abrashov, Nelya Grigoryan, Yuri Korshak, Tigran Vagramyan, Oleg Grafov, Yaroslav Mezhuev
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	superhydrophobic materials corrosion protection protection of aluminum alloys stearic acid aluminum passivation Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/e6266b3f63ac4c74907a59eaa33e4072
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e6266b3f63ac4c74907a59eaa33e4072
record_format	dspace
spelling	oai:doaj.org-article:e6266b3f63ac4c74907a59eaa33e40722021-11-25T18:21:27ZRegularities of the Formation of a Green Superhydrophobic Protective Coating on an Aluminum Alloy after Surface Modification with Stearic Acid Solutions10.3390/met111117182075-4701https://doaj.org/article/e6266b3f63ac4c74907a59eaa33e40722021-10-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1718https://doaj.org/toc/2075-4701It has been shown that solutions of stearic acid in a dimethyl sulfoxide–water binary mixture allow superhydrophobic protective coatings to be created on an aluminum alloy surface with a minimum impact on the environment. The superhydrophobicity and self-cleaning ability of the coating that we developed have been confirmed by measurements of droplet wetting angles and roll-off angles. These properties appear due to the formation of a multimodal micro-rough surface that mainly consists of aluminum stearate. The coatings formed in this manner have been studied by ellipsometry, XPS, and scanning probe microscopy. Their protective ability has been estimated by the “droplet-express” method and in a salt fog chamber. The protective ability of the coating is determined by the DMSO/H<sub>2</sub>O ratio, the concentration of stearic acid, and the duration and temperature of modification of the aluminum alloy; it is controlled by a competition between the processes of aluminum stearate formation and hydrolysis. It has been shown that adsorption of stearic acid on an aluminum stearate coating increases its permeability and decreases its protective capability. The results presented in this article are useful for optimizing the conditions of applying green superhydrophobic stearate coatings on aluminum alloys in order to achieve a maximum protective effect.Aleksey AbrashovNelya GrigoryanYuri KorshakTigran VagramyanOleg GrafovYaroslav MezhuevMDPI AGarticlesuperhydrophobic materialscorrosion protectionprotection of aluminum alloysstearic acidaluminum passivationMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1718, p 1718 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	superhydrophobic materials corrosion protection protection of aluminum alloys stearic acid aluminum passivation Mining engineering. Metallurgy TN1-997
spellingShingle	superhydrophobic materials corrosion protection protection of aluminum alloys stearic acid aluminum passivation Mining engineering. Metallurgy TN1-997 Aleksey Abrashov Nelya Grigoryan Yuri Korshak Tigran Vagramyan Oleg Grafov Yaroslav Mezhuev Regularities of the Formation of a Green Superhydrophobic Protective Coating on an Aluminum Alloy after Surface Modification with Stearic Acid Solutions
description	It has been shown that solutions of stearic acid in a dimethyl sulfoxide–water binary mixture allow superhydrophobic protective coatings to be created on an aluminum alloy surface with a minimum impact on the environment. The superhydrophobicity and self-cleaning ability of the coating that we developed have been confirmed by measurements of droplet wetting angles and roll-off angles. These properties appear due to the formation of a multimodal micro-rough surface that mainly consists of aluminum stearate. The coatings formed in this manner have been studied by ellipsometry, XPS, and scanning probe microscopy. Their protective ability has been estimated by the “droplet-express” method and in a salt fog chamber. The protective ability of the coating is determined by the DMSO/H<sub>2</sub>O ratio, the concentration of stearic acid, and the duration and temperature of modification of the aluminum alloy; it is controlled by a competition between the processes of aluminum stearate formation and hydrolysis. It has been shown that adsorption of stearic acid on an aluminum stearate coating increases its permeability and decreases its protective capability. The results presented in this article are useful for optimizing the conditions of applying green superhydrophobic stearate coatings on aluminum alloys in order to achieve a maximum protective effect.
format	article
author	Aleksey Abrashov Nelya Grigoryan Yuri Korshak Tigran Vagramyan Oleg Grafov Yaroslav Mezhuev
author_facet	Aleksey Abrashov Nelya Grigoryan Yuri Korshak Tigran Vagramyan Oleg Grafov Yaroslav Mezhuev
author_sort	Aleksey Abrashov
title	Regularities of the Formation of a Green Superhydrophobic Protective Coating on an Aluminum Alloy after Surface Modification with Stearic Acid Solutions
title_short	Regularities of the Formation of a Green Superhydrophobic Protective Coating on an Aluminum Alloy after Surface Modification with Stearic Acid Solutions
title_full	Regularities of the Formation of a Green Superhydrophobic Protective Coating on an Aluminum Alloy after Surface Modification with Stearic Acid Solutions
title_fullStr	Regularities of the Formation of a Green Superhydrophobic Protective Coating on an Aluminum Alloy after Surface Modification with Stearic Acid Solutions
title_full_unstemmed	Regularities of the Formation of a Green Superhydrophobic Protective Coating on an Aluminum Alloy after Surface Modification with Stearic Acid Solutions
title_sort	regularities of the formation of a green superhydrophobic protective coating on an aluminum alloy after surface modification with stearic acid solutions
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e6266b3f63ac4c74907a59eaa33e4072
work_keys_str_mv	AT alekseyabrashov regularitiesoftheformationofagreensuperhydrophobicprotectivecoatingonanaluminumalloyaftersurfacemodificationwithstearicacidsolutions AT nelyagrigoryan regularitiesoftheformationofagreensuperhydrophobicprotectivecoatingonanaluminumalloyaftersurfacemodificationwithstearicacidsolutions AT yurikorshak regularitiesoftheformationofagreensuperhydrophobicprotectivecoatingonanaluminumalloyaftersurfacemodificationwithstearicacidsolutions AT tigranvagramyan regularitiesoftheformationofagreensuperhydrophobicprotectivecoatingonanaluminumalloyaftersurfacemodificationwithstearicacidsolutions AT oleggrafov regularitiesoftheformationofagreensuperhydrophobicprotectivecoatingonanaluminumalloyaftersurfacemodificationwithstearicacidsolutions AT yaroslavmezhuev regularitiesoftheformationofagreensuperhydrophobicprotectivecoatingonanaluminumalloyaftersurfacemodificationwithstearicacidsolutions
_version_	1718411291487371264

Regularities of the Formation of a Green Superhydrophobic Protective Coating on an Aluminum Alloy after Surface Modification with Stearic Acid Solutions

Ejemplares similares