Effects of Interfacial Bonding on Friction and Wear at Silica/Silica Interfaces
Static friction between amorphous silica surfaces with a varying number of interfacial siloxane (Si–O–Si) bridges was studied using molecular dynamic simulations. Static friction was found to increase linearly with the applied normal pressure, which can be explained in the framework of Prandlt–Tomli...
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| Format: | Article |
| Language: | English |
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Springer US
2016
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| Online Access: | http://hdl.handle.net/1721.1/105434 https://orcid.org/0000-0003-1630-4052 |
| _version_ | 1826199180460163072 |
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| author | Li, Ao Szlufarska, Izabela Liu, Y. |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Li, Ao Szlufarska, Izabela Liu, Y. |
| author_sort | Li, Ao |
| collection | MIT |
| description | Static friction between amorphous silica surfaces with a varying number of interfacial siloxane (Si–O–Si) bridges was studied using molecular dynamic simulations. Static friction was found to increase linearly with the applied normal pressure, which can be explained in the framework of Prandlt–Tomlinson’s model. Friction force was found to increase with concentration of siloxane bridges, but with a decreasing gradient, with the latter being due to interactions between neighboring siloxane bridges. In addition, we identified atomic-level wear mechanisms of silica. These mechanisms include both transfer of individual atoms accompanied by breaking interfacial siloxane bridges and transfer of atomic cluster initialized by rupturing of surface Si–O bonds. Our simulations showed that small clusters are continually formed and dissolved at the sliding interface, which plays an important role in wear at silica/silica interface. |
| first_indexed | 2024-09-23T11:15:40Z |
| format | Article |
| id | mit-1721.1/105434 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:15:40Z |
| publishDate | 2016 |
| publisher | Springer US |
| record_format | dspace |
| spelling | mit-1721.1/1054342022-10-01T02:26:13Z Effects of Interfacial Bonding on Friction and Wear at Silica/Silica Interfaces Li, Ao Szlufarska, Izabela Liu, Y. Massachusetts Institute of Technology. Department of Materials Science and Engineering Static friction between amorphous silica surfaces with a varying number of interfacial siloxane (Si–O–Si) bridges was studied using molecular dynamic simulations. Static friction was found to increase linearly with the applied normal pressure, which can be explained in the framework of Prandlt–Tomlinson’s model. Friction force was found to increase with concentration of siloxane bridges, but with a decreasing gradient, with the latter being due to interactions between neighboring siloxane bridges. In addition, we identified atomic-level wear mechanisms of silica. These mechanisms include both transfer of individual atoms accompanied by breaking interfacial siloxane bridges and transfer of atomic cluster initialized by rupturing of surface Si–O bonds. Our simulations showed that small clusters are continually formed and dissolved at the sliding interface, which plays an important role in wear at silica/silica interface. National Science Foundation (U.S.) (Grant EAR-0910779) United States. Army Research Office (Grant W911NF-12-1-0548) 2016-11-22T21:19:51Z 2016-11-22T21:19:51Z 2014-10 2014-07 2016-08-18T15:41:56Z Article http://purl.org/eprint/type/JournalArticle 1023-8883 1573-2711 http://hdl.handle.net/1721.1/105434 Li, Ao et al. “Effects of Interfacial Bonding on Friction and Wear at Silica/Silica Interfaces.” Tribology Letters 56.3 (2014): 481–490 https://orcid.org/0000-0003-1630-4052 en http://dx.doi.org/10.1007/s11249-014-0425-x Tribology Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Springer Science+Business Media New York application/pdf Springer US Springer US |
| spellingShingle | Li, Ao Szlufarska, Izabela Liu, Y. Effects of Interfacial Bonding on Friction and Wear at Silica/Silica Interfaces |
| title | Effects of Interfacial Bonding on Friction and Wear at Silica/Silica Interfaces |
| title_full | Effects of Interfacial Bonding on Friction and Wear at Silica/Silica Interfaces |
| title_fullStr | Effects of Interfacial Bonding on Friction and Wear at Silica/Silica Interfaces |
| title_full_unstemmed | Effects of Interfacial Bonding on Friction and Wear at Silica/Silica Interfaces |
| title_short | Effects of Interfacial Bonding on Friction and Wear at Silica/Silica Interfaces |
| title_sort | effects of interfacial bonding on friction and wear at silica silica interfaces |
| url | http://hdl.handle.net/1721.1/105434 https://orcid.org/0000-0003-1630-4052 |
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