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...

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Autores principales:	Alessandra Ciniero, Giulio Fatti, Maria Clelia Righi, Daniele Dini, Tom Reddyhoff
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2019
Materias:	tribocharging triboemission silica amorphous diamond dft Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/c0a4db3cec3d449bbb8e0da06d165c68
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spelling	oai:doaj.org-article:c0a4db3cec3d449bbb8e0da06d165c682021-11-05T09:17:25ZA Combined Experimental and Theoretical Study on the Mechanisms Behind Tribocharging Phenomenon and the Influence of Triboemission1881-219810.2474/trol.14.367https://doaj.org/article/c0a4db3cec3d449bbb8e0da06d165c682019-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/14/5/14_367/_pdf/-char/enhttps://doaj.org/toc/1881-2198This 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.Alessandra CinieroGiulio FattiMaria Clelia RighiDaniele DiniTom ReddyhoffJapanese Society of Tribologistsarticletribochargingtriboemissionsilica amorphousdiamonddftPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 14, Iss 5, Pp 367-374 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	tribocharging triboemission silica amorphous diamond dft Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	tribocharging triboemission silica amorphous diamond dft Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 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
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.
format	article
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
title	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_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_sort	combined experimental and theoretical study on the mechanisms behind tribocharging phenomenon and the influence of triboemission
publisher	Japanese Society of Tribologists
publishDate	2019
url	https://doaj.org/article/c0a4db3cec3d449bbb8e0da06d165c68
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A Combined Experimental and Theoretical Study on the Mechanisms Behind Tribocharging Phenomenon and the Influence of Triboemission

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