A poly(butyl methacrylate)/graphene oxide/TiO2 nanocomposite coating with superior corrosion protection for AZ31 alloy in chloride solution

Ahmed Abdel Nazeer; Entesar Al-Hetlani; Mohamed O. Amin; Tatiana Quiñones-Ruiz; Igor K. Lednev

doi:10.1016/j.cej.2018.12.077

A poly(butyl methacrylate)/graphene oxide/TiO₂ nanocomposite coating with superior corrosion protection for AZ31 alloy in chloride solution

Ahmed Abdel Nazeer, Entesar Al-Hetlani, Mohamed O. Amin, Tatiana Quiñones-Ruiz, Igor K. Lednev

Kuwait University

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

57 Scopus citations

Abstract

A promising new nanocomposite coating based on poly(butyl methacrylate) (poly(BMA)), graphene oxide (GO) and TiO₂ nanoparticles (NPs) (i.e., poly(BMA)/GO/TiO₂ blend) is reported for magnesium alloy (AZ31) protection in 3.5% NaCl solution. A significant decrease in the corrosion current and a pronounced increase in the charge transfer resistance were observed using poly(BMA)/GO/TiO₂ nanocomposite which acted as an excellent passivation layer for ion diffusion and corrosion. The addition of GOto poly(BMA) retarded the corrosive ions diffusion by forming longer and wrapped pathways. Embedding TiO₂ NPs into the poly(BMA)/GO coating, resulted in charge transfer blockage at metal/electrolyte interface which suppressed metal dissolution.

Original language	English
Pages (from-to)	485-498
Number of pages	14
Journal	Chemical Engineering Journal
Volume	361
DOIs	https://doi.org/10.1016/j.cej.2018.12.077
State	Published - 1 Apr 2019

Keywords

Corrosion protection
Graphene oxide
Mg-alloy (AZ31)
Nanocomposite coating
Poly(BMA)

Funding Agency

Kuwait Foundation for the Advancement of Sciences

Access to Document

10.1016/j.cej.2018.12.077

Cite this

@article{99797087174d41aca6668215bd0c079b,

title = "A poly(butyl methacrylate)/graphene oxide/TiO2 nanocomposite coating with superior corrosion protection for AZ31 alloy in chloride solution",

abstract = "A promising new nanocomposite coating based on poly(butyl methacrylate) (poly(BMA)), graphene oxide (GO) and TiO2 nanoparticles (NPs) (i.e., poly(BMA)/GO/TiO2 blend) is reported for magnesium alloy (AZ31) protection in 3.5% NaCl solution. A significant decrease in the corrosion current and a pronounced increase in the charge transfer resistance were observed using poly(BMA)/GO/TiO2 nanocomposite which acted as an excellent passivation layer for ion diffusion and corrosion. The addition of GOto poly(BMA) retarded the corrosive ions diffusion by forming longer and wrapped pathways. Embedding TiO2 NPs into the poly(BMA)/GO coating, resulted in charge transfer blockage at metal/electrolyte interface which suppressed metal dissolution.",

keywords = "Corrosion protection, Graphene oxide, Mg-alloy (AZ31), Nanocomposite coating, Poly(BMA)",

author = "Nazeer, {Ahmed Abdel} and Entesar Al-Hetlani and Amin, {Mohamed O.} and Tatiana Qui{\~n}ones-Ruiz and Lednev, {Igor K.}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2019",

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day = "1",

doi = "10.1016/j.cej.2018.12.077",

language = "English",

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T1 - A poly(butyl methacrylate)/graphene oxide/TiO2 nanocomposite coating with superior corrosion protection for AZ31 alloy in chloride solution

AU - Nazeer, Ahmed Abdel

AU - Al-Hetlani, Entesar

AU - Amin, Mohamed O.

AU - Quiñones-Ruiz, Tatiana

AU - Lednev, Igor K.

PY - 2019/4/1

Y1 - 2019/4/1

N2 - A promising new nanocomposite coating based on poly(butyl methacrylate) (poly(BMA)), graphene oxide (GO) and TiO2 nanoparticles (NPs) (i.e., poly(BMA)/GO/TiO2 blend) is reported for magnesium alloy (AZ31) protection in 3.5% NaCl solution. A significant decrease in the corrosion current and a pronounced increase in the charge transfer resistance were observed using poly(BMA)/GO/TiO2 nanocomposite which acted as an excellent passivation layer for ion diffusion and corrosion. The addition of GOto poly(BMA) retarded the corrosive ions diffusion by forming longer and wrapped pathways. Embedding TiO2 NPs into the poly(BMA)/GO coating, resulted in charge transfer blockage at metal/electrolyte interface which suppressed metal dissolution.

AB - A promising new nanocomposite coating based on poly(butyl methacrylate) (poly(BMA)), graphene oxide (GO) and TiO2 nanoparticles (NPs) (i.e., poly(BMA)/GO/TiO2 blend) is reported for magnesium alloy (AZ31) protection in 3.5% NaCl solution. A significant decrease in the corrosion current and a pronounced increase in the charge transfer resistance were observed using poly(BMA)/GO/TiO2 nanocomposite which acted as an excellent passivation layer for ion diffusion and corrosion. The addition of GOto poly(BMA) retarded the corrosive ions diffusion by forming longer and wrapped pathways. Embedding TiO2 NPs into the poly(BMA)/GO coating, resulted in charge transfer blockage at metal/electrolyte interface which suppressed metal dissolution.

KW - Corrosion protection

KW - Graphene oxide

KW - Mg-alloy (AZ31)

KW - Nanocomposite coating

KW - Poly(BMA)

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