Open-air plasma-assisted deposition of organosilicon coating for corrosion protection of AZ91D Mg alloy

Jiheon Jun; Yi Feng Su; John E. Wade; Daphne Pappas; Andrew Sy; Ryan Robinson; Yong Chae Lim

doi:10.1007/s11998-023-00876-2

Open-air plasma-assisted deposition of organosilicon coating for corrosion protection of AZ91D Mg alloy

Jiheon Jun, Yi Feng Su, John E. Wade, Daphne Pappas, Andrew Sy, Ryan Robinson, Yong Chae Lim

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

2 Scopus citations

Abstract

As a corrosion barrier layer, open-air plasma-assisted organosilicon coating was applied on AZ91D Mg alloy. Organosilicon-coated AZ91D samples, prepared from two different plasma coating processes, were used for corrosion evaluation based on multistep electrochemical and H₂ collection measurements in 3.5 wt% sodium chloride (NaCl) solution. Some coated AZ91D samples were characterized with and without corrosion exposure in NaCl solution using electron microscopies and X-ray chemical analysis techniques. The results indicate that the organosilicon coatings from open-air plasma processes are effective to delay the initiation of corrosion attack and also reduce the corrosion rate for AZ91D substrate. The corrosion attack was considered to develop after permeation of NaCl solution through the coating layer.

Original language	English
Pages (from-to)	1097-1111
Number of pages	15
Journal	Journal of Coatings Technology and Research
Volume	21
Issue number	3
DOIs	https://doi.org/10.1007/s11998-023-00876-2
State	Published - May 2024

Funding

This work was funded by Light Metals Core Program under U.S. Department of Energy, Vehicle Technologies Office. The authors appreciate J. Allen Haynes, ORNL technical reviewers for their assistance. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).

Funders	Funder number
Light Metals Core Program
U.S. Department of Energy	DE-AC05-00OR22725

Keywords

Corrosion
Magnesium alloy
Open-air plasma
Organosilicon (silane) coating
Surface characterization

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10.1007/s11998-023-00876-2

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title = "Open-air plasma-assisted deposition of organosilicon coating for corrosion protection of AZ91D Mg alloy",

abstract = "As a corrosion barrier layer, open-air plasma-assisted organosilicon coating was applied on AZ91D Mg alloy. Organosilicon-coated AZ91D samples, prepared from two different plasma coating processes, were used for corrosion evaluation based on multistep electrochemical and H2 collection measurements in 3.5 wt% sodium chloride (NaCl) solution. Some coated AZ91D samples were characterized with and without corrosion exposure in NaCl solution using electron microscopies and X-ray chemical analysis techniques. The results indicate that the organosilicon coatings from open-air plasma processes are effective to delay the initiation of corrosion attack and also reduce the corrosion rate for AZ91D substrate. The corrosion attack was considered to develop after permeation of NaCl solution through the coating layer.",

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author = "Jiheon Jun and Su, {Yi Feng} and Wade, {John E.} and Daphne Pappas and Andrew Sy and Ryan Robinson and Lim, {Yong Chae}",

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doi = "10.1007/s11998-023-00876-2",

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AU - Jun, Jiheon

AU - Su, Yi Feng

AU - Wade, John E.

AU - Pappas, Daphne

AU - Sy, Andrew

AU - Robinson, Ryan

AU - Lim, Yong Chae

N1 - Publisher Copyright: © UT-Battelle, LLC and The Author(s), under exclusive licence to American Coatings Association 2024.

PY - 2024/5

Y1 - 2024/5

N2 - As a corrosion barrier layer, open-air plasma-assisted organosilicon coating was applied on AZ91D Mg alloy. Organosilicon-coated AZ91D samples, prepared from two different plasma coating processes, were used for corrosion evaluation based on multistep electrochemical and H2 collection measurements in 3.5 wt% sodium chloride (NaCl) solution. Some coated AZ91D samples were characterized with and without corrosion exposure in NaCl solution using electron microscopies and X-ray chemical analysis techniques. The results indicate that the organosilicon coatings from open-air plasma processes are effective to delay the initiation of corrosion attack and also reduce the corrosion rate for AZ91D substrate. The corrosion attack was considered to develop after permeation of NaCl solution through the coating layer.

AB - As a corrosion barrier layer, open-air plasma-assisted organosilicon coating was applied on AZ91D Mg alloy. Organosilicon-coated AZ91D samples, prepared from two different plasma coating processes, were used for corrosion evaluation based on multistep electrochemical and H2 collection measurements in 3.5 wt% sodium chloride (NaCl) solution. Some coated AZ91D samples were characterized with and without corrosion exposure in NaCl solution using electron microscopies and X-ray chemical analysis techniques. The results indicate that the organosilicon coatings from open-air plasma processes are effective to delay the initiation of corrosion attack and also reduce the corrosion rate for AZ91D substrate. The corrosion attack was considered to develop after permeation of NaCl solution through the coating layer.

KW - Corrosion

KW - Magnesium alloy

KW - Open-air plasma

KW - Organosilicon (silane) coating

KW - Surface characterization

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Open-air plasma-assisted deposition of organosilicon coating for corrosion protection of AZ91D Mg alloy

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