Corrosion resistance enhancement of magnesium alloy by N-doped graphene quantum dots and polymethyltrimethoxysilane composite coating

B. K. Jiang; A. Y. Chen; J. F. Gu; J. T. Fan; Y. Liu; P. Wang; H. J. Li; H. Sun; J. H. Yang; X. Y. Wang

doi:10.1016/j.carbon.2019.09.013

Corrosion resistance enhancement of magnesium alloy by N-doped graphene quantum dots and polymethyltrimethoxysilane composite coating

B. K. Jiang
, A. Y. Chen^*
, J. F. Gu
, J. T. Fan
, Y. Liu
, P. Wang
, H. J. Li
, H. Sun
, J. H. Yang
, X. Y. Wang

^*Corresponding author for this work

School of Mechatronical Engineering

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

86 Citations (Scopus)

Abstract

A composite coating of N-doped graphene quantum dots (N-GQDs)/polymethyltrimethoxysilane (PMTMS) is prepared on the surface of AZ91D magnesium alloy via electrodeposition and subsequent silane treatment. The microstructure of the N-GQDs/PMTMS composite coating is characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The corrosion resistance performance is investigated by electrochemical impedance spectroscopy (EIS) and immersion test in NaCl solution (3.5 wt%). The N-GQDs/PMTMS composite coating exhibits a significant enhancement of corrosion resistance due to the chemical bonding of N-GQDs coating with Mg substrate and PMTMS coating. The formation mechanisms and nature of the corrosion resistance of the N-GQDs/PMTMS coating are discussed.

Original language	English
Pages (from-to)	537-548
Number of pages	12
Journal	Carbon
Volume	157
DOIs	https://doi.org/10.1016/j.carbon.2019.09.013
Publication status	Published - Feb 2020

Keywords

Coating
Corrosion resistance
Electrochemical deposition
Magnesium
N-doped graphene quantum dots

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10.1016/j.carbon.2019.09.013

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@article{29b9ae9815714919a195baedecdfb4f9,

title = "Corrosion resistance enhancement of magnesium alloy by N-doped graphene quantum dots and polymethyltrimethoxysilane composite coating",

abstract = "A composite coating of N-doped graphene quantum dots (N-GQDs)/polymethyltrimethoxysilane (PMTMS) is prepared on the surface of AZ91D magnesium alloy via electrodeposition and subsequent silane treatment. The microstructure of the N-GQDs/PMTMS composite coating is characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The corrosion resistance performance is investigated by electrochemical impedance spectroscopy (EIS) and immersion test in NaCl solution (3.5 wt\%). The N-GQDs/PMTMS composite coating exhibits a significant enhancement of corrosion resistance due to the chemical bonding of N-GQDs coating with Mg substrate and PMTMS coating. The formation mechanisms and nature of the corrosion resistance of the N-GQDs/PMTMS coating are discussed.",

keywords = "Coating, Corrosion resistance, Electrochemical deposition, Magnesium, N-doped graphene quantum dots",

author = "Jiang, \{B. K.\} and Chen, \{A. Y.\} and Gu, \{J. F.\} and Fan, \{J. T.\} and Y. Liu and P. Wang and Li, \{H. J.\} and H. Sun and Yang, \{J. H.\} and Wang, \{X. Y.\}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2020",

month = feb,

doi = "10.1016/j.carbon.2019.09.013",

language = "English",

volume = "157",

pages = "537--548",

journal = "Carbon",

issn = "0008-6223",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Corrosion resistance enhancement of magnesium alloy by N-doped graphene quantum dots and polymethyltrimethoxysilane composite coating

AU - Jiang, B. K.

AU - Chen, A. Y.

AU - Gu, J. F.

AU - Fan, J. T.

AU - Liu, Y.

AU - Wang, P.

AU - Li, H. J.

AU - Sun, H.

AU - Yang, J. H.

AU - Wang, X. Y.

PY - 2020/2

Y1 - 2020/2

N2 - A composite coating of N-doped graphene quantum dots (N-GQDs)/polymethyltrimethoxysilane (PMTMS) is prepared on the surface of AZ91D magnesium alloy via electrodeposition and subsequent silane treatment. The microstructure of the N-GQDs/PMTMS composite coating is characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The corrosion resistance performance is investigated by electrochemical impedance spectroscopy (EIS) and immersion test in NaCl solution (3.5 wt%). The N-GQDs/PMTMS composite coating exhibits a significant enhancement of corrosion resistance due to the chemical bonding of N-GQDs coating with Mg substrate and PMTMS coating. The formation mechanisms and nature of the corrosion resistance of the N-GQDs/PMTMS coating are discussed.

AB - A composite coating of N-doped graphene quantum dots (N-GQDs)/polymethyltrimethoxysilane (PMTMS) is prepared on the surface of AZ91D magnesium alloy via electrodeposition and subsequent silane treatment. The microstructure of the N-GQDs/PMTMS composite coating is characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The corrosion resistance performance is investigated by electrochemical impedance spectroscopy (EIS) and immersion test in NaCl solution (3.5 wt%). The N-GQDs/PMTMS composite coating exhibits a significant enhancement of corrosion resistance due to the chemical bonding of N-GQDs coating with Mg substrate and PMTMS coating. The formation mechanisms and nature of the corrosion resistance of the N-GQDs/PMTMS coating are discussed.

KW - Coating

KW - Corrosion resistance

KW - Electrochemical deposition

KW - Magnesium

KW - N-doped graphene quantum dots

UR - https://www.scopus.com/pages/publications/85074730930

U2 - 10.1016/j.carbon.2019.09.013

DO - 10.1016/j.carbon.2019.09.013

M3 - Article

AN - SCOPUS:85074730930

SN - 0008-6223

VL - 157

SP - 537

EP - 548

JO - Carbon

JF - Carbon

ER -

Corrosion resistance enhancement of magnesium alloy by N-doped graphene quantum dots and polymethyltrimethoxysilane composite coating

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Keywords

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