Frictional Asymmetry and Wear Pattern Formation by Slip and Cleavage Detected at Directional r{1 0 -1 4} Face of Calcite (CaCO3)

Frictional force was measured on directional calcite (1 0 -1 4) surface, where triangular carbonate ions are all tilted to [4 2 -1] direction. With the normal load < 49 mN, observed frictional asymmetry, +[4 2 -1] > -[4 2 -1], was the same as that measured in nm-scale. In the higher...

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Autores principales:	Kaori Niki, Mai Kobayashi, Hitoshi Shindo
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2012
Materias:	friction asymmetry caco3 single crystale deformation mechanism slip calcite 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/bbc1d93bda4244938fb1211534b92ee0
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spelling	oai:doaj.org-article:bbc1d93bda4244938fb1211534b92ee02021-11-05T09:25:11ZFrictional Asymmetry and Wear Pattern Formation by Slip and Cleavage Detected at Directional r{1 0 -1 4} Face of Calcite (CaCO3)1881-219810.2474/trol.7.8https://doaj.org/article/bbc1d93bda4244938fb1211534b92ee02012-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/7/1/7_1_8/_pdf/-char/enhttps://doaj.org/toc/1881-2198Frictional force was measured on directional calcite (1 0 -1 4) surface, where triangular carbonate ions are all tilted to [4 2 -1] direction. With the normal load < 49 mN, observed frictional asymmetry, +[4 2 -1] > -[4 2 -1], was the same as that measured in nm-scale. In the higher normal load range, a new component was added to the friction in -[4 2 -1] direction, and the asymmetry was reversed. Only in the direction of stronger friction, characteristic triangular deformation patterns were formed. Microscopic observation after indentation experiments revealed that the patterns were formed by slip on c (0 0 0 1) faces on one side of the stylus, followed by cleavage on r{1 0 -1 4} faces. A mechanical model was proposed to explain why the deformation occurs only in one quadrant of the surface. The result of scratch perpendicularly in [0 1 0] direction, also supports the mechanism of deformation. The results show when and how the contribution of plastic deformation is added to intrinsic surface friction and affects the frictional asymmetry. The frictional force in the -[4 2 -1] scratch increased linearly with the total lengths of the traces of c-slip.Kaori NikiMai KobayashiHitoshi ShindoJapanese Society of Tribologistsarticlefriction asymmetrycaco3single crystaledeformation mechanismslipcalcitePhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 7, Iss 1, Pp 8-12 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	friction asymmetry caco3 single crystale deformation mechanism slip calcite Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	friction asymmetry caco3 single crystale deformation mechanism slip calcite Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Kaori Niki Mai Kobayashi Hitoshi Shindo Frictional Asymmetry and Wear Pattern Formation by Slip and Cleavage Detected at Directional r{1 0 -1 4} Face of Calcite (CaCO3)
description	Frictional force was measured on directional calcite (1 0 -1 4) surface, where triangular carbonate ions are all tilted to [4 2 -1] direction. With the normal load < 49 mN, observed frictional asymmetry, +[4 2 -1] > -[4 2 -1], was the same as that measured in nm-scale. In the higher normal load range, a new component was added to the friction in -[4 2 -1] direction, and the asymmetry was reversed. Only in the direction of stronger friction, characteristic triangular deformation patterns were formed. Microscopic observation after indentation experiments revealed that the patterns were formed by slip on c (0 0 0 1) faces on one side of the stylus, followed by cleavage on r{1 0 -1 4} faces. A mechanical model was proposed to explain why the deformation occurs only in one quadrant of the surface. The result of scratch perpendicularly in [0 1 0] direction, also supports the mechanism of deformation. The results show when and how the contribution of plastic deformation is added to intrinsic surface friction and affects the frictional asymmetry. The frictional force in the -[4 2 -1] scratch increased linearly with the total lengths of the traces of c-slip.
format	article
author	Kaori Niki Mai Kobayashi Hitoshi Shindo
author_facet	Kaori Niki Mai Kobayashi Hitoshi Shindo
author_sort	Kaori Niki
title	Frictional Asymmetry and Wear Pattern Formation by Slip and Cleavage Detected at Directional r{1 0 -1 4} Face of Calcite (CaCO3)
title_short	Frictional Asymmetry and Wear Pattern Formation by Slip and Cleavage Detected at Directional r{1 0 -1 4} Face of Calcite (CaCO3)
title_full	Frictional Asymmetry and Wear Pattern Formation by Slip and Cleavage Detected at Directional r{1 0 -1 4} Face of Calcite (CaCO3)
title_fullStr	Frictional Asymmetry and Wear Pattern Formation by Slip and Cleavage Detected at Directional r{1 0 -1 4} Face of Calcite (CaCO3)
title_full_unstemmed	Frictional Asymmetry and Wear Pattern Formation by Slip and Cleavage Detected at Directional r{1 0 -1 4} Face of Calcite (CaCO3)
title_sort	frictional asymmetry and wear pattern formation by slip and cleavage detected at directional r{1 0 -1 4} face of calcite (caco3)
publisher	Japanese Society of Tribologists
publishDate	2012
url	https://doaj.org/article/bbc1d93bda4244938fb1211534b92ee0
work_keys_str_mv	AT kaoriniki frictionalasymmetryandwearpatternformationbyslipandcleavagedetectedatdirectionalr1014faceofcalcitecaco3 AT maikobayashi frictionalasymmetryandwearpatternformationbyslipandcleavagedetectedatdirectionalr1014faceofcalcitecaco3 AT hitoshishindo frictionalasymmetryandwearpatternformationbyslipandcleavagedetectedatdirectionalr1014faceofcalcitecaco3
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Frictional Asymmetry and Wear Pattern Formation by Slip and Cleavage Detected at Directional r{1 0 -1 4} Face of Calcite (CaCO3)

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