Fabrication and characterization of graphene oxide/zirconium dioxide coatings produced by plasma electrolytic oxidation of Zr–1%Nb alloys
In this investigation, a graphene oxide (GO)/zirconium dioxide (ZrO2) composite coating was fabricated on Zr–1%Nb alloy by plasma electrolytic oxidation (PEO) process to improve the wear behavior and reduce friction performance of the Zr alloy. The GO-containing composite coating was mainly composed...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-02-01
|
| Series: | Results in Surfaces and Interfaces |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666845924000254 |
| _version_ | 1797262885148164096 |
|---|---|
| author | Meysam Karimi Mohammad Jafari Eskandari Masoud Araghchi |
| author_facet | Meysam Karimi Mohammad Jafari Eskandari Masoud Araghchi |
| author_sort | Meysam Karimi |
| collection | DOAJ |
| description | In this investigation, a graphene oxide (GO)/zirconium dioxide (ZrO2) composite coating was fabricated on Zr–1%Nb alloy by plasma electrolytic oxidation (PEO) process to improve the wear behavior and reduce friction performance of the Zr alloy. The GO-containing composite coating was mainly composed of the monoclinic (m-ZrO2) and tetragonal (t-ZrO2) phases and had a higher intensity of surface reactions, density, and thickness than the GO-free coating. Furthermore, the GO-containing coating exhibited lower icorr and more positive Ecorr than the GO-free coating. The optimal amount of GO sheets for improving the composite coating properties was found to be 2 wt%; use of more than 2 wt% of the GO sheets, however reduced the coating properties due to the increase in the conductivity of the electrolyte, the creation of stronger micro-discharges on the surface of the coating, and their aggregation. Additionally, the GO sheets improved the hydrophobicity of the PEO coating. |
| first_indexed | 2024-03-07T21:28:13Z |
| format | Article |
| id | doaj.art-e252ab8e27b840afab6b47d442194295 |
| institution | Directory Open Access Journal |
| issn | 2666-8459 |
| language | English |
| last_indexed | 2024-04-25T00:04:13Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Surfaces and Interfaces |
| spelling | doaj.art-e252ab8e27b840afab6b47d4421942952024-03-14T06:16:47ZengElsevierResults in Surfaces and Interfaces2666-84592024-02-0114100205Fabrication and characterization of graphene oxide/zirconium dioxide coatings produced by plasma electrolytic oxidation of Zr–1%Nb alloysMeysam Karimi0Mohammad Jafari Eskandari1Masoud Araghchi2Nuclear Science and Technology Research Institute (NSTRI), P.O. Box, 11365, 8486, Tehran, IranCorresponding author.; Nuclear Science and Technology Research Institute (NSTRI), P.O. Box, 11365, 8486, Tehran, IranNuclear Science and Technology Research Institute (NSTRI), P.O. Box, 11365, 8486, Tehran, IranIn this investigation, a graphene oxide (GO)/zirconium dioxide (ZrO2) composite coating was fabricated on Zr–1%Nb alloy by plasma electrolytic oxidation (PEO) process to improve the wear behavior and reduce friction performance of the Zr alloy. The GO-containing composite coating was mainly composed of the monoclinic (m-ZrO2) and tetragonal (t-ZrO2) phases and had a higher intensity of surface reactions, density, and thickness than the GO-free coating. Furthermore, the GO-containing coating exhibited lower icorr and more positive Ecorr than the GO-free coating. The optimal amount of GO sheets for improving the composite coating properties was found to be 2 wt%; use of more than 2 wt% of the GO sheets, however reduced the coating properties due to the increase in the conductivity of the electrolyte, the creation of stronger micro-discharges on the surface of the coating, and their aggregation. Additionally, the GO sheets improved the hydrophobicity of the PEO coating.http://www.sciencedirect.com/science/article/pii/S2666845924000254Plasma electrolytic oxidationGraphene oxideZirconium alloyWear behavior |
| spellingShingle | Meysam Karimi Mohammad Jafari Eskandari Masoud Araghchi Fabrication and characterization of graphene oxide/zirconium dioxide coatings produced by plasma electrolytic oxidation of Zr–1%Nb alloys Results in Surfaces and Interfaces Plasma electrolytic oxidation Graphene oxide Zirconium alloy Wear behavior |
| title | Fabrication and characterization of graphene oxide/zirconium dioxide coatings produced by plasma electrolytic oxidation of Zr–1%Nb alloys |
| title_full | Fabrication and characterization of graphene oxide/zirconium dioxide coatings produced by plasma electrolytic oxidation of Zr–1%Nb alloys |
| title_fullStr | Fabrication and characterization of graphene oxide/zirconium dioxide coatings produced by plasma electrolytic oxidation of Zr–1%Nb alloys |
| title_full_unstemmed | Fabrication and characterization of graphene oxide/zirconium dioxide coatings produced by plasma electrolytic oxidation of Zr–1%Nb alloys |
| title_short | Fabrication and characterization of graphene oxide/zirconium dioxide coatings produced by plasma electrolytic oxidation of Zr–1%Nb alloys |
| title_sort | fabrication and characterization of graphene oxide zirconium dioxide coatings produced by plasma electrolytic oxidation of zr 1 nb alloys |
| topic | Plasma electrolytic oxidation Graphene oxide Zirconium alloy Wear behavior |
| url | http://www.sciencedirect.com/science/article/pii/S2666845924000254 |
| work_keys_str_mv | AT meysamkarimi fabricationandcharacterizationofgrapheneoxidezirconiumdioxidecoatingsproducedbyplasmaelectrolyticoxidationofzr1nballoys AT mohammadjafarieskandari fabricationandcharacterizationofgrapheneoxidezirconiumdioxidecoatingsproducedbyplasmaelectrolyticoxidationofzr1nballoys AT masoudaraghchi fabricationandcharacterizationofgrapheneoxidezirconiumdioxidecoatingsproducedbyplasmaelectrolyticoxidationofzr1nballoys |