A Combined Experimental and Theoretical Study on the Mechanisms Behind Tribocharging Phenomenon and the Influence of Triboemission
This work describes recent research into the mechanisms behind tribocharging and the influence of triboemission. The term tribocharging is a type of contact-induced electrification and refers to the transfer of charge between rubbing components. The term triboemission, on the other hand, refers to e...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Japanese Society of Tribologists
2019-12-01
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| Series: | Tribology Online |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/trol/14/5/14_367/_pdf/-char/en |
| _version_ | 1818842706406801408 |
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| author | Alessandra Ciniero Giulio Fatti Maria Clelia Righi Daniele Dini Tom Reddyhoff |
| author_facet | Alessandra Ciniero Giulio Fatti Maria Clelia Righi Daniele Dini Tom Reddyhoff |
| author_sort | Alessandra Ciniero |
| collection | DOAJ |
| description | This work describes recent research into the mechanisms behind tribocharging and the influence of triboemission. The term tribocharging is a type of contact-induced electrification and refers to the transfer of charge between rubbing components. The term triboemission, on the other hand, refers to emission of electrons, ions and photons generated when surfaces are rubbed together. The understanding of tribocharging is of wide interest for several industrial applications and in particular the combination of tribocharging and triboemission may be important in lubricated contacts in the formation of boundary lubricant films. We report the use of a unique vacuum measurement system that enables to measure surface charge variations while simultaneously recording triboemission events during the sliding of a diamond tip on silica specimens. Results show for the first time that tribocharging and triboemission behavior are linked and depend on the surface wear. The contribution of contact-induced electrification to the charging of the surface is then described by means of density functional theory (DFT). Results give insight into the transfer of charge from the SiO2 amorphous surface (silica) to the C(111) surface (diamond ) and into the variation of charging during simulated sliding contact. |
| first_indexed | 2024-12-19T04:46:14Z |
| format | Article |
| id | doaj.art-c0a4db3cec3d449bbb8e0da06d165c68 |
| institution | Directory Open Access Journal |
| issn | 1881-2198 |
| language | English |
| last_indexed | 2024-12-19T04:46:14Z |
| publishDate | 2019-12-01 |
| publisher | Japanese Society of Tribologists |
| record_format | Article |
| series | Tribology Online |
| spelling | doaj.art-c0a4db3cec3d449bbb8e0da06d165c682022-12-21T20:35:29ZengJapanese Society of TribologistsTribology Online1881-21982019-12-0114536737410.2474/trol.14.367trolA Combined Experimental and Theoretical Study on the Mechanisms Behind Tribocharging Phenomenon and the Influence of TriboemissionAlessandra Ciniero0Giulio Fatti1Maria Clelia Righi2Daniele Dini3Tom Reddyhoff4Department of Physics, Informatics and Mathematics, University of Modena and Reggio EmiliaDepartment of Physics, Informatics and Mathematics, University of Modena and Reggio EmiliaDepartment of Physics, Informatics and Mathematics, University of Modena and Reggio EmiliaTribology Group, Department of Mechanical Engineering, Imperial College LondonTribology Group, Department of Mechanical Engineering, Imperial College LondonThis work describes recent research into the mechanisms behind tribocharging and the influence of triboemission. The term tribocharging is a type of contact-induced electrification and refers to the transfer of charge between rubbing components. The term triboemission, on the other hand, refers to emission of electrons, ions and photons generated when surfaces are rubbed together. The understanding of tribocharging is of wide interest for several industrial applications and in particular the combination of tribocharging and triboemission may be important in lubricated contacts in the formation of boundary lubricant films. We report the use of a unique vacuum measurement system that enables to measure surface charge variations while simultaneously recording triboemission events during the sliding of a diamond tip on silica specimens. Results show for the first time that tribocharging and triboemission behavior are linked and depend on the surface wear. The contribution of contact-induced electrification to the charging of the surface is then described by means of density functional theory (DFT). Results give insight into the transfer of charge from the SiO2 amorphous surface (silica) to the C(111) surface (diamond ) and into the variation of charging during simulated sliding contact.https://www.jstage.jst.go.jp/article/trol/14/5/14_367/_pdf/-char/entribochargingtriboemissionsilica amorphousdiamonddft |
| spellingShingle | Alessandra Ciniero Giulio Fatti Maria Clelia Righi Daniele Dini Tom Reddyhoff A Combined Experimental and Theoretical Study on the Mechanisms Behind Tribocharging Phenomenon and the Influence of Triboemission Tribology Online tribocharging triboemission silica amorphous diamond dft |
| title | A Combined Experimental and Theoretical Study on the Mechanisms Behind Tribocharging Phenomenon and the Influence of Triboemission |
| title_full | A Combined Experimental and Theoretical Study on the Mechanisms Behind Tribocharging Phenomenon and the Influence of Triboemission |
| title_fullStr | A Combined Experimental and Theoretical Study on the Mechanisms Behind Tribocharging Phenomenon and the Influence of Triboemission |
| title_full_unstemmed | A Combined Experimental and Theoretical Study on the Mechanisms Behind Tribocharging Phenomenon and the Influence of Triboemission |
| title_short | A Combined Experimental and Theoretical Study on the Mechanisms Behind Tribocharging Phenomenon and the Influence of Triboemission |
| title_sort | combined experimental and theoretical study on the mechanisms behind tribocharging phenomenon and the influence of triboemission |
| topic | tribocharging triboemission silica amorphous diamond dft |
| url | https://www.jstage.jst.go.jp/article/trol/14/5/14_367/_pdf/-char/en |
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