Hydrothermal treatment and butylphosphonic acid derived self-assembled monolayers for improving the surface chemistry and corrosion resistance of AZ61 magnesium alloy

Chung Wei Yang; Cheng Liu; Da Jun Lin; Ming Long Yeh; Tzer Min Lee

doi:10.1038/s41598-017-17199-z

Hydrothermal treatment and butylphosphonic acid derived self-assembled monolayers for improving the surface chemistry and corrosion resistance of AZ61 magnesium alloy

Chung Wei Yang, Cheng Liu, Da Jun Lin, Ming Long Yeh, Tzer Min Lee

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

8 Citations (Scopus)

Abstract

The hydrothermal treatment followed by a self-assembled monolayer (SAM) of 1-butylphosphonic acid through the tethering by aggregation and growth (T-BAG) method was employed to produce protective surface coatings on the Mg-6Al-1Zn alloy (AZ61) for reducing the degradation rate in physiological environments. Potentiodynamic polarization measurements revealed that the organic self-assembled monolayer and Mg(OH)₂ coating can further enhance the surface chemical stability and corrosion resistance of Mg alloys. SAM-treated Mg(OH)₂ coatings can be served as a more passive surface layer as a result of their much higher charge transfer resistance and the presence of Warburg impedance in electrochemical impedance spectroscopy measurement.

Original language	English
Article number	16910
Journal	Scientific reports
Volume	7
Issue number	1
DOIs	https://doi.org/10.1038/s41598-017-17199-z
Publication status	Published - 2017 Dec 1

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title = "Hydrothermal treatment and butylphosphonic acid derived self-assembled monolayers for improving the surface chemistry and corrosion resistance of AZ61 magnesium alloy",

abstract = "The hydrothermal treatment followed by a self-assembled monolayer (SAM) of 1-butylphosphonic acid through the tethering by aggregation and growth (T-BAG) method was employed to produce protective surface coatings on the Mg-6Al-1Zn alloy (AZ61) for reducing the degradation rate in physiological environments. Potentiodynamic polarization measurements revealed that the organic self-assembled monolayer and Mg(OH)2 coating can further enhance the surface chemical stability and corrosion resistance of Mg alloys. SAM-treated Mg(OH)2 coatings can be served as a more passive surface layer as a result of their much higher charge transfer resistance and the presence of Warburg impedance in electrochemical impedance spectroscopy measurement.",

author = "Yang, {Chung Wei} and Cheng Liu and Lin, {Da Jun} and Yeh, {Ming Long} and Lee, {Tzer Min}",

note = "Funding Information: This study was supported by Ministry of Science and Technology (MOST 104-2221-E-006 -100 -MY2) and Kaohsiung Medical University (KMU-KMUH Co-Project of Key Research, grant No. KMU-DK105005). Publisher Copyright: {\textcopyright} 2017 The Author(s).",

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doi = "10.1038/s41598-017-17199-z",

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AU - Yang, Chung Wei

AU - Liu, Cheng

AU - Lin, Da Jun

AU - Yeh, Ming Long

AU - Lee, Tzer Min

N1 - Funding Information: This study was supported by Ministry of Science and Technology (MOST 104-2221-E-006 -100 -MY2) and Kaohsiung Medical University (KMU-KMUH Co-Project of Key Research, grant No. KMU-DK105005). Publisher Copyright: © 2017 The Author(s).

PY - 2017/12/1

Y1 - 2017/12/1

N2 - The hydrothermal treatment followed by a self-assembled monolayer (SAM) of 1-butylphosphonic acid through the tethering by aggregation and growth (T-BAG) method was employed to produce protective surface coatings on the Mg-6Al-1Zn alloy (AZ61) for reducing the degradation rate in physiological environments. Potentiodynamic polarization measurements revealed that the organic self-assembled monolayer and Mg(OH)2 coating can further enhance the surface chemical stability and corrosion resistance of Mg alloys. SAM-treated Mg(OH)2 coatings can be served as a more passive surface layer as a result of their much higher charge transfer resistance and the presence of Warburg impedance in electrochemical impedance spectroscopy measurement.

AB - The hydrothermal treatment followed by a self-assembled monolayer (SAM) of 1-butylphosphonic acid through the tethering by aggregation and growth (T-BAG) method was employed to produce protective surface coatings on the Mg-6Al-1Zn alloy (AZ61) for reducing the degradation rate in physiological environments. Potentiodynamic polarization measurements revealed that the organic self-assembled monolayer and Mg(OH)2 coating can further enhance the surface chemical stability and corrosion resistance of Mg alloys. SAM-treated Mg(OH)2 coatings can be served as a more passive surface layer as a result of their much higher charge transfer resistance and the presence of Warburg impedance in electrochemical impedance spectroscopy measurement.

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Hydrothermal treatment and butylphosphonic acid derived self-assembled monolayers for improving the surface chemistry and corrosion resistance of AZ61 magnesium alloy

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