Influence of Anodizing Parameters on Tribological Properties and Wettability of Al<sub>2</sub>O<sub>3</sub> Layers Produced on the EN AW-5251 Aluminum Alloy
The article presents the effect of anodizing parameters of the EN AW-5251 aluminum alloy on the thickness and roughness of Al<sub>2</sub>O<sub>3</sub> layers as well as their wettability and tribological properties in a sliding combination with the T7W material. The input var...
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2022-11-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/21/7732 |
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| author | Mateusz Niedźwiedź Marek Bara Władysław Skoneczny Sławomir Kaptacz Grzegorz Dercz |
| author_facet | Mateusz Niedźwiedź Marek Bara Władysław Skoneczny Sławomir Kaptacz Grzegorz Dercz |
| author_sort | Mateusz Niedźwiedź |
| collection | DOAJ |
| description | The article presents the effect of anodizing parameters of the EN AW-5251 aluminum alloy on the thickness and roughness of Al<sub>2</sub>O<sub>3</sub> layers as well as their wettability and tribological properties in a sliding combination with the T7W material. The input variables were the current density of 1, 2, 3 A/dm<sup>2</sup> and the electrolyte temperature of 283, 293, 303 K. The tribological tests were performed on the T-17 tester in reciprocating motion, in conditions of technically dry friction. The tests were carried out on a 15 km road with a constant average slip speed of 0.2 m/s and a constant unit pressure of 1 MPa. The measurement of the wettability of the layers was performed using the sitting drop method, determining the contact angles on the basis of which the surface free energy was calculated. The profilographometric measurements were made. The analysis of the test results showed that the anodizing parameters significantly affect the thickness of the Al<sub>2</sub>O<sub>3</sub> layers. The performed correlation analysis also showed a significant relationship between the roughness parameters and the wettability of the surface of the layers, which affects the ability to create and maintain a sliding film, which in turn translates into sliding resistance and wear of the T7W material. The analysis of friction and wear tests showed that the layer with hydrophobic properties produced at a current density of 1 A/dm<sup>2</sup> in an electrolyte at a temperature of 283 K is the most favorable for sliding associations with T7W material. |
| first_indexed | 2024-03-09T18:53:22Z |
| format | Article |
| id | doaj.art-eaacee1b40d64f34be9545ab11512183 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T18:53:22Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-eaacee1b40d64f34be9545ab115121832023-11-24T05:39:57ZengMDPI AGMaterials1996-19442022-11-011521773210.3390/ma15217732Influence of Anodizing Parameters on Tribological Properties and Wettability of Al<sub>2</sub>O<sub>3</sub> Layers Produced on the EN AW-5251 Aluminum AlloyMateusz Niedźwiedź0Marek Bara1Władysław Skoneczny2Sławomir Kaptacz3Grzegorz Dercz4Institute of Materials Engineering, Faculty of Science and Technology, University of Silesia in Katowice, 41-500 Chorzów, PolandInstitute of Materials Engineering, Faculty of Science and Technology, University of Silesia in Katowice, 41-500 Chorzów, PolandInstitute of Materials Engineering, Faculty of Science and Technology, University of Silesia in Katowice, 41-500 Chorzów, PolandInstitute of Materials Engineering, Faculty of Science and Technology, University of Silesia in Katowice, 41-500 Chorzów, PolandInstitute of Materials Engineering, Faculty of Science and Technology, University of Silesia in Katowice, 41-500 Chorzów, PolandThe article presents the effect of anodizing parameters of the EN AW-5251 aluminum alloy on the thickness and roughness of Al<sub>2</sub>O<sub>3</sub> layers as well as their wettability and tribological properties in a sliding combination with the T7W material. The input variables were the current density of 1, 2, 3 A/dm<sup>2</sup> and the electrolyte temperature of 283, 293, 303 K. The tribological tests were performed on the T-17 tester in reciprocating motion, in conditions of technically dry friction. The tests were carried out on a 15 km road with a constant average slip speed of 0.2 m/s and a constant unit pressure of 1 MPa. The measurement of the wettability of the layers was performed using the sitting drop method, determining the contact angles on the basis of which the surface free energy was calculated. The profilographometric measurements were made. The analysis of the test results showed that the anodizing parameters significantly affect the thickness of the Al<sub>2</sub>O<sub>3</sub> layers. The performed correlation analysis also showed a significant relationship between the roughness parameters and the wettability of the surface of the layers, which affects the ability to create and maintain a sliding film, which in turn translates into sliding resistance and wear of the T7W material. The analysis of friction and wear tests showed that the layer with hydrophobic properties produced at a current density of 1 A/dm<sup>2</sup> in an electrolyte at a temperature of 283 K is the most favorable for sliding associations with T7W material.https://www.mdpi.com/1996-1944/15/21/7732aluminum alloysoxide layercontact anglessurface free energytribology |
| spellingShingle | Mateusz Niedźwiedź Marek Bara Władysław Skoneczny Sławomir Kaptacz Grzegorz Dercz Influence of Anodizing Parameters on Tribological Properties and Wettability of Al<sub>2</sub>O<sub>3</sub> Layers Produced on the EN AW-5251 Aluminum Alloy Materials aluminum alloys oxide layer contact angles surface free energy tribology |
| title | Influence of Anodizing Parameters on Tribological Properties and Wettability of Al<sub>2</sub>O<sub>3</sub> Layers Produced on the EN AW-5251 Aluminum Alloy |
| title_full | Influence of Anodizing Parameters on Tribological Properties and Wettability of Al<sub>2</sub>O<sub>3</sub> Layers Produced on the EN AW-5251 Aluminum Alloy |
| title_fullStr | Influence of Anodizing Parameters on Tribological Properties and Wettability of Al<sub>2</sub>O<sub>3</sub> Layers Produced on the EN AW-5251 Aluminum Alloy |
| title_full_unstemmed | Influence of Anodizing Parameters on Tribological Properties and Wettability of Al<sub>2</sub>O<sub>3</sub> Layers Produced on the EN AW-5251 Aluminum Alloy |
| title_short | Influence of Anodizing Parameters on Tribological Properties and Wettability of Al<sub>2</sub>O<sub>3</sub> Layers Produced on the EN AW-5251 Aluminum Alloy |
| title_sort | influence of anodizing parameters on tribological properties and wettability of al sub 2 sub o sub 3 sub layers produced on the en aw 5251 aluminum alloy |
| topic | aluminum alloys oxide layer contact angles surface free energy tribology |
| url | https://www.mdpi.com/1996-1944/15/21/7732 |
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