Barrier and mechanical properties of carbon steel coated with SiOx/SiOxCyHz gradual films prepared by PECVD

Detalhes bibliográficos
Autor(a) principal: Rangel, Rita C.C. [UNESP]
Data de Publicação: 2019
Outros Autores: Cruz, Nilson C. [UNESP], Milella, Antonella, Fracassi, Francesco, Rangel, Elidiane C. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.surfcoat.2019.124996
http://hdl.handle.net/11449/201340
Resumo: Carbon steel is the most commonly used material for sheets, plates, bars and tubes in mechanical metallurgy and construction industry. However, the susceptibility of carbon steel to oxidation under real conditions of use turns preventive and corrective repairs mandatory. Many published studies show that plasma deposited silica and organosilicon layers can be used as corrosion barriers, being the first one more efficient due to its higher chemical density and inertness. However, the performance of SiOx layers may be affected by mechanical stress, and especially by defects generated in the deposition process or by the substrate finishing. To associate the good corrosion resistance of the silicon oxide films to the flexibility of organosilicon ones, some authors created multilayered systems, intercalating organosilicon and silica layers. However, the adhesion between the organosilicon and inorganic layers in these multilayered systems is still a problem, since there is a well-defined interface between them and both layers are just slightly interconnected. In this sense, the purpose of the present work is to create, from plasma polymerization of hexamethyldisiloxane, an organosilicon-silica gradual system and to investigate its barrier and mechanical properties. SiOx/SiOxCyHz gradual films were deposited by low pressure radiofrequency (13.56 MHz) plasmas using HMDSO, Ar and O2 mixtures. The change of an organosilicon to inorganic coating or vice versa was made only by adjusting the plasma conditions without interrupting the process. The influence of the carbon steel native oxide pre-deposition treatment in O2 plasma was also evaluated. Electrochemical Impedance Spectroscopy, EIS was used to evaluate the corrosion resistance provided by the gradual system to the carbon steel. Infrared spectroscopy, FTIR, was applied to analyze the chemical composition and molecular structure. The thickness of the films was measured by profilometry. Surface wettability was assessed from contact angle measurements using an automated goniometer. The morphology of the samples was inspected by secondary electrons micrographs acquired using a scanning electron microscope while the mechanical properties of the systems were examined by nanoindentation. The oxidation treatment performed on the substrate surface prior to deposition improve the corrosion resistance of the samples. The total corrosion resistance increases six orders of magnitude when carbon steel was coated with a quaternary gradual coating of only 2 μm.
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spelling Barrier and mechanical properties of carbon steel coated with SiOx/SiOxCyHz gradual films prepared by PECVDCorrosion resistanceHMDSOMechanical propertiesPlasma depositionSiOx/SiOxCyHz gradual layersCarbon steel is the most commonly used material for sheets, plates, bars and tubes in mechanical metallurgy and construction industry. However, the susceptibility of carbon steel to oxidation under real conditions of use turns preventive and corrective repairs mandatory. Many published studies show that plasma deposited silica and organosilicon layers can be used as corrosion barriers, being the first one more efficient due to its higher chemical density and inertness. However, the performance of SiOx layers may be affected by mechanical stress, and especially by defects generated in the deposition process or by the substrate finishing. To associate the good corrosion resistance of the silicon oxide films to the flexibility of organosilicon ones, some authors created multilayered systems, intercalating organosilicon and silica layers. However, the adhesion between the organosilicon and inorganic layers in these multilayered systems is still a problem, since there is a well-defined interface between them and both layers are just slightly interconnected. In this sense, the purpose of the present work is to create, from plasma polymerization of hexamethyldisiloxane, an organosilicon-silica gradual system and to investigate its barrier and mechanical properties. SiOx/SiOxCyHz gradual films were deposited by low pressure radiofrequency (13.56 MHz) plasmas using HMDSO, Ar and O2 mixtures. The change of an organosilicon to inorganic coating or vice versa was made only by adjusting the plasma conditions without interrupting the process. The influence of the carbon steel native oxide pre-deposition treatment in O2 plasma was also evaluated. Electrochemical Impedance Spectroscopy, EIS was used to evaluate the corrosion resistance provided by the gradual system to the carbon steel. Infrared spectroscopy, FTIR, was applied to analyze the chemical composition and molecular structure. The thickness of the films was measured by profilometry. Surface wettability was assessed from contact angle measurements using an automated goniometer. The morphology of the samples was inspected by secondary electrons micrographs acquired using a scanning electron microscope while the mechanical properties of the systems were examined by nanoindentation. The oxidation treatment performed on the substrate surface prior to deposition improve the corrosion resistance of the samples. The total corrosion resistance increases six orders of magnitude when carbon steel was coated with a quaternary gradual coating of only 2 μm.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Laboratory of Technological Plasmas (LaPTec) São Paulo State University (UNESP) Science and Technology Institute of Sorocaba (ICTS), Av. Três de Março, 511Department of Chemistry University of Bari Aldo Moro, Via Orabona 4Laboratory of Technological Plasmas (LaPTec) São Paulo State University (UNESP) Science and Technology Institute of Sorocaba (ICTS), Av. Três de Março, 511FAPESP: 2012/14708-2FAPESP: 2013/05012-7FAPESP: 2014/24707-9Universidade Estadual Paulista (Unesp)University of Bari Aldo MoroRangel, Rita C.C. [UNESP]Cruz, Nilson C. [UNESP]Milella, AntonellaFracassi, FrancescoRangel, Elidiane C. [UNESP]2020-12-12T02:30:06Z2020-12-12T02:30:06Z2019-11-25info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.surfcoat.2019.124996Surface and Coatings Technology, v. 378.0257-8972http://hdl.handle.net/11449/20134010.1016/j.surfcoat.2019.1249962-s2.0-85075370602Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSurface and Coatings Technologyinfo:eu-repo/semantics/openAccess2021-10-22T17:19:53Zoai:repositorio.unesp.br:11449/201340Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:31:47.625487Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Barrier and mechanical properties of carbon steel coated with SiOx/SiOxCyHz gradual films prepared by PECVD
title Barrier and mechanical properties of carbon steel coated with SiOx/SiOxCyHz gradual films prepared by PECVD
spellingShingle Barrier and mechanical properties of carbon steel coated with SiOx/SiOxCyHz gradual films prepared by PECVD
Rangel, Rita C.C. [UNESP]
Corrosion resistance
HMDSO
Mechanical properties
Plasma deposition
SiOx/SiOxCyHz gradual layers
title_short Barrier and mechanical properties of carbon steel coated with SiOx/SiOxCyHz gradual films prepared by PECVD
title_full Barrier and mechanical properties of carbon steel coated with SiOx/SiOxCyHz gradual films prepared by PECVD
title_fullStr Barrier and mechanical properties of carbon steel coated with SiOx/SiOxCyHz gradual films prepared by PECVD
title_full_unstemmed Barrier and mechanical properties of carbon steel coated with SiOx/SiOxCyHz gradual films prepared by PECVD
title_sort Barrier and mechanical properties of carbon steel coated with SiOx/SiOxCyHz gradual films prepared by PECVD
author Rangel, Rita C.C. [UNESP]
author_facet Rangel, Rita C.C. [UNESP]
Cruz, Nilson C. [UNESP]
Milella, Antonella
Fracassi, Francesco
Rangel, Elidiane C. [UNESP]
author_role author
author2 Cruz, Nilson C. [UNESP]
Milella, Antonella
Fracassi, Francesco
Rangel, Elidiane C. [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
University of Bari Aldo Moro
dc.contributor.author.fl_str_mv Rangel, Rita C.C. [UNESP]
Cruz, Nilson C. [UNESP]
Milella, Antonella
Fracassi, Francesco
Rangel, Elidiane C. [UNESP]
dc.subject.por.fl_str_mv Corrosion resistance
HMDSO
Mechanical properties
Plasma deposition
SiOx/SiOxCyHz gradual layers
topic Corrosion resistance
HMDSO
Mechanical properties
Plasma deposition
SiOx/SiOxCyHz gradual layers
description Carbon steel is the most commonly used material for sheets, plates, bars and tubes in mechanical metallurgy and construction industry. However, the susceptibility of carbon steel to oxidation under real conditions of use turns preventive and corrective repairs mandatory. Many published studies show that plasma deposited silica and organosilicon layers can be used as corrosion barriers, being the first one more efficient due to its higher chemical density and inertness. However, the performance of SiOx layers may be affected by mechanical stress, and especially by defects generated in the deposition process or by the substrate finishing. To associate the good corrosion resistance of the silicon oxide films to the flexibility of organosilicon ones, some authors created multilayered systems, intercalating organosilicon and silica layers. However, the adhesion between the organosilicon and inorganic layers in these multilayered systems is still a problem, since there is a well-defined interface between them and both layers are just slightly interconnected. In this sense, the purpose of the present work is to create, from plasma polymerization of hexamethyldisiloxane, an organosilicon-silica gradual system and to investigate its barrier and mechanical properties. SiOx/SiOxCyHz gradual films were deposited by low pressure radiofrequency (13.56 MHz) plasmas using HMDSO, Ar and O2 mixtures. The change of an organosilicon to inorganic coating or vice versa was made only by adjusting the plasma conditions without interrupting the process. The influence of the carbon steel native oxide pre-deposition treatment in O2 plasma was also evaluated. Electrochemical Impedance Spectroscopy, EIS was used to evaluate the corrosion resistance provided by the gradual system to the carbon steel. Infrared spectroscopy, FTIR, was applied to analyze the chemical composition and molecular structure. The thickness of the films was measured by profilometry. Surface wettability was assessed from contact angle measurements using an automated goniometer. The morphology of the samples was inspected by secondary electrons micrographs acquired using a scanning electron microscope while the mechanical properties of the systems were examined by nanoindentation. The oxidation treatment performed on the substrate surface prior to deposition improve the corrosion resistance of the samples. The total corrosion resistance increases six orders of magnitude when carbon steel was coated with a quaternary gradual coating of only 2 μm.
publishDate 2019
dc.date.none.fl_str_mv 2019-11-25
2020-12-12T02:30:06Z
2020-12-12T02:30:06Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.surfcoat.2019.124996
Surface and Coatings Technology, v. 378.
0257-8972
http://hdl.handle.net/11449/201340
10.1016/j.surfcoat.2019.124996
2-s2.0-85075370602
url http://dx.doi.org/10.1016/j.surfcoat.2019.124996
http://hdl.handle.net/11449/201340
identifier_str_mv Surface and Coatings Technology, v. 378.
0257-8972
10.1016/j.surfcoat.2019.124996
2-s2.0-85075370602
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Surface and Coatings Technology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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