Relation between Self-Organization and Wear Mechanisms of Diamond Films
The study deals with tribological properties of diamond films that were tested under reciprocal sliding conditions against Si3N4 balls. Adhesive and abrasive wear are explained in terms of nonequilibrium thermodynamic model of friction and wear. Surface roughness alteration and film deformation indu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-04-01
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| Series: | Entropy |
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| Online Access: | http://www.mdpi.com/1099-4300/20/4/279 |
| _version_ | 1811307340381552640 |
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| author | Vitali Podgursky Andrei Bogatov Maxim Yashin Sergey Sobolev Iosif S. Gershman |
| author_facet | Vitali Podgursky Andrei Bogatov Maxim Yashin Sergey Sobolev Iosif S. Gershman |
| author_sort | Vitali Podgursky |
| collection | DOAJ |
| description | The study deals with tribological properties of diamond films that were tested under reciprocal sliding conditions against Si3N4 balls. Adhesive and abrasive wear are explained in terms of nonequilibrium thermodynamic model of friction and wear. Surface roughness alteration and film deformation induce instabilities in the tribological system, therefore self-organization can occur. Instabilities can lead to an increase of the real contact area between the ball and film, resulting in the seizure between the sliding counterparts (degenerative case of self-organization). However, the material cannot withstand the stress and collapses due to high friction forces, thus this regime of sliding corresponds to the adhesive wear. In contrast, a decrease of the real contact area leads to the decrease of the coefficient of friction (constructive self-organization). However, it results in a contact pressure increase on the top of asperities within the contact zone, followed by material collapse, i.e., abrasive wear. Mentioned wear mechanisms should be distinguished from the self-lubricating properties of diamond due to the formation of a carbonaceous layer. |
| first_indexed | 2024-04-13T09:01:35Z |
| format | Article |
| id | doaj.art-ed452651a8e541058211421bf880ab4a |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-13T09:01:35Z |
| publishDate | 2018-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-ed452651a8e541058211421bf880ab4a2022-12-22T02:53:07ZengMDPI AGEntropy1099-43002018-04-0120427910.3390/e20040279e20040279Relation between Self-Organization and Wear Mechanisms of Diamond FilmsVitali Podgursky0Andrei Bogatov1Maxim Yashin2Sergey Sobolev3Iosif S. Gershman4Department of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaDepartment of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaDepartment of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaDepartment of Mechanical Engineering, Gubkin Russian State University of Oil and Gas, Leninsky Prospect 65, 119991 Moscow, RussiaJoint Stock Company Railway Research Institute, Moscow State Technological University “Stankin” (MSTU “STANKIN”), 3rd Mytischinskaya Street 10, 129851 Moscow, RussiaThe study deals with tribological properties of diamond films that were tested under reciprocal sliding conditions against Si3N4 balls. Adhesive and abrasive wear are explained in terms of nonequilibrium thermodynamic model of friction and wear. Surface roughness alteration and film deformation induce instabilities in the tribological system, therefore self-organization can occur. Instabilities can lead to an increase of the real contact area between the ball and film, resulting in the seizure between the sliding counterparts (degenerative case of self-organization). However, the material cannot withstand the stress and collapses due to high friction forces, thus this regime of sliding corresponds to the adhesive wear. In contrast, a decrease of the real contact area leads to the decrease of the coefficient of friction (constructive self-organization). However, it results in a contact pressure increase on the top of asperities within the contact zone, followed by material collapse, i.e., abrasive wear. Mentioned wear mechanisms should be distinguished from the self-lubricating properties of diamond due to the formation of a carbonaceous layer.http://www.mdpi.com/1099-4300/20/4/279self-organizationtribologydiamond films |
| spellingShingle | Vitali Podgursky Andrei Bogatov Maxim Yashin Sergey Sobolev Iosif S. Gershman Relation between Self-Organization and Wear Mechanisms of Diamond Films Entropy self-organization tribology diamond films |
| title | Relation between Self-Organization and Wear Mechanisms of Diamond Films |
| title_full | Relation between Self-Organization and Wear Mechanisms of Diamond Films |
| title_fullStr | Relation between Self-Organization and Wear Mechanisms of Diamond Films |
| title_full_unstemmed | Relation between Self-Organization and Wear Mechanisms of Diamond Films |
| title_short | Relation between Self-Organization and Wear Mechanisms of Diamond Films |
| title_sort | relation between self organization and wear mechanisms of diamond films |
| topic | self-organization tribology diamond films |
| url | http://www.mdpi.com/1099-4300/20/4/279 |
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