Tribological Performance of a Plasma Electrolytic Oxidation-Coated Mg Alloy in Graphene-Incorporated Ethanol

Sukanta Bhowmick; Faiz Muhaffel; Shayan Shirzadian; Huseyin Cimenoglu; Ahmet T. Alpas

doi:10.3390/lubricants12010009

Tribological Performance of a Plasma Electrolytic Oxidation-Coated Mg Alloy in Graphene-Incorporated Ethanol

Sukanta Bhowmick, Faiz Muhaffel, Shayan Shirzadian, Huseyin Cimenoglu, Ahmet T. Alpas^*

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

University of Windsor

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

1 Citation (Scopus)

Abstract

This study investigated the friction and wear characteristics of a plasma electrolytic oxidation (PEO)-coated Mg–Al alloy (AZ31) in sliding contact against steel using graphene nanoplatelets (GNPs) containing ethanol as a lubricant. The results revealed that the typically high coefficient of friction (COF) of PEO-coated surfaces under dry sliding (0.74) was notably reduced to 0.18 during the sliding tests conducted in GNP-free ethanol. When the ethanol contained 5 × 10⁻⁴ wt.% GNPs, the COF of the uncoated AZ31 alloy further dropped to 0.17. The PEO-coated surfaces achieved a significantly lower COF of 0.07 and demonstrated a marked reduction in wear rate, attributed to the formation of a tribolayer incorporating graphene. These findings highlight the significant potential of GNP-incorporated ethanol to improve the tribological performance of PEO-coated AZ31, presenting a promising avenue for advancing lightweight, sustainable, and efficient automotive technologies.

Original language	English
Article number	9
Journal	Lubricants
Volume	12
Issue number	1
DOIs	https://doi.org/10.3390/lubricants12010009
Publication status	Published - Jan 2024

Bibliographical note

Publisher Copyright:
© 2023 by the authors.

Funding

This paper has been financially supported by The Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant No. 06340-2018.

Funders	Funder number
Natural Sciences and Engineering Research Council of Canada	06340-2018

Keywords

ethanol
friction
graphene
lubrication
magnesium alloy
plasma electrolytic oxidation

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10.3390/lubricants12010009

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title = "Tribological Performance of a Plasma Electrolytic Oxidation-Coated Mg Alloy in Graphene-Incorporated Ethanol",

abstract = "This study investigated the friction and wear characteristics of a plasma electrolytic oxidation (PEO)-coated Mg–Al alloy (AZ31) in sliding contact against steel using graphene nanoplatelets (GNPs) containing ethanol as a lubricant. The results revealed that the typically high coefficient of friction (COF) of PEO-coated surfaces under dry sliding (0.74) was notably reduced to 0.18 during the sliding tests conducted in GNP-free ethanol. When the ethanol contained 5 × 10−4 wt.% GNPs, the COF of the uncoated AZ31 alloy further dropped to 0.17. The PEO-coated surfaces achieved a significantly lower COF of 0.07 and demonstrated a marked reduction in wear rate, attributed to the formation of a tribolayer incorporating graphene. These findings highlight the significant potential of GNP-incorporated ethanol to improve the tribological performance of PEO-coated AZ31, presenting a promising avenue for advancing lightweight, sustainable, and efficient automotive technologies.",

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author = "Sukanta Bhowmick and Faiz Muhaffel and Shayan Shirzadian and Huseyin Cimenoglu and Alpas, {Ahmet T.}",

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doi = "10.3390/lubricants12010009",

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AU - Bhowmick, Sukanta

AU - Muhaffel, Faiz

AU - Shirzadian, Shayan

AU - Cimenoglu, Huseyin

AU - Alpas, Ahmet T.

PY - 2024/1

Y1 - 2024/1

N2 - This study investigated the friction and wear characteristics of a plasma electrolytic oxidation (PEO)-coated Mg–Al alloy (AZ31) in sliding contact against steel using graphene nanoplatelets (GNPs) containing ethanol as a lubricant. The results revealed that the typically high coefficient of friction (COF) of PEO-coated surfaces under dry sliding (0.74) was notably reduced to 0.18 during the sliding tests conducted in GNP-free ethanol. When the ethanol contained 5 × 10−4 wt.% GNPs, the COF of the uncoated AZ31 alloy further dropped to 0.17. The PEO-coated surfaces achieved a significantly lower COF of 0.07 and demonstrated a marked reduction in wear rate, attributed to the formation of a tribolayer incorporating graphene. These findings highlight the significant potential of GNP-incorporated ethanol to improve the tribological performance of PEO-coated AZ31, presenting a promising avenue for advancing lightweight, sustainable, and efficient automotive technologies.

AB - This study investigated the friction and wear characteristics of a plasma electrolytic oxidation (PEO)-coated Mg–Al alloy (AZ31) in sliding contact against steel using graphene nanoplatelets (GNPs) containing ethanol as a lubricant. The results revealed that the typically high coefficient of friction (COF) of PEO-coated surfaces under dry sliding (0.74) was notably reduced to 0.18 during the sliding tests conducted in GNP-free ethanol. When the ethanol contained 5 × 10−4 wt.% GNPs, the COF of the uncoated AZ31 alloy further dropped to 0.17. The PEO-coated surfaces achieved a significantly lower COF of 0.07 and demonstrated a marked reduction in wear rate, attributed to the formation of a tribolayer incorporating graphene. These findings highlight the significant potential of GNP-incorporated ethanol to improve the tribological performance of PEO-coated AZ31, presenting a promising avenue for advancing lightweight, sustainable, and efficient automotive technologies.

KW - ethanol

KW - friction

KW - graphene

KW - lubrication

KW - magnesium alloy

KW - plasma electrolytic oxidation

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ER -

Tribological Performance of a Plasma Electrolytic Oxidation-Coated Mg Alloy in Graphene-Incorporated Ethanol

Abstract

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Keywords

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