Abstract
Use of Mg alloy structural parts can enable lightweight automobiles for improved energy efficiency. High corrosion susceptibility of Mg alloys, however, remains as a technical challenge against their application in vehicle-structures. This work investigates open-air plasma assisted Si–O–C coating as a corrosion barrier for AZ91D Mg alloy. The open-air plasma coating does not involve wet chemical process and is amenable to the industries experienced in other plasma-based processes. As-deposited coatings on AZ91D substrates were characterized by advanced microscopic characterization techniques, including SEM, STEM, and EDS. Corrosion evaluation was performed using electrochemical impedance spectroscopy, polarization, and H2 collection measurements in 3.5 wt.% NaCl solution. Post-immersion AZ91D samples, that were uncoated or Si– O–C coated condition, were also characterized by SEM, STEM, and EDS. The results indicate that plasma assisted Si–O–C coating delayed the initiation of corrosion and the progression of corrosion attack.
Original language | English |
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Title of host publication | Magnesium Technology 2023 |
Editors | Steven Barela, Aeriel Leonard, Petra Maier, Neale R. Neelameggham, Victoria M. Miller |
Publisher | Springer Science and Business Media Deutschland GmbH |
Pages | 55-57 |
Number of pages | 3 |
ISBN (Print) | 9783031226458 |
DOIs | |
State | Published - 2023 |
Event | Magnesium Technology Symposium held during the 152nd TMS Annual Meeting and Exhibition, TMS 2023 - San Diego, United States Duration: Mar 19 2023 → Mar 23 2023 |
Publication series
Name | Minerals, Metals and Materials Series |
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ISSN (Print) | 2367-1181 |
ISSN (Electronic) | 2367-1696 |
Conference
Conference | Magnesium Technology Symposium held during the 152nd TMS Annual Meeting and Exhibition, TMS 2023 |
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Country/Territory | United States |
City | San Diego |
Period | 03/19/23 → 03/23/23 |
Funding
This work was supported by the Lightweight Metals Core Program, Vehicle Technologies Office, U.S. Department of Energy. 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). Acknowledgements This work was supported by the Lightweight Metals Core Program, Vehicle Technologies Office, U.S. Department of Energy. 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).
Keywords
- Environmental effects
- Magnesium
- Process technology