Participation of {1 0 0} Slip System in Sliding Friction at (0 0 1), (1 1 1) and (1 1 0) Surfaces of Fluorite (CaF2) Crystal

Indentation experiments and friction measurements were performed at three low index faces of fluorite (CaF2) crystal. Deformation patterns were analyzed by observing step structures with atomic force microscopy (AFM). Upon indentation at (0 0 1) surface, {1 0 0} slip steps were formed at limited par...

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Autores principales:	Kaori Niki, Gaku Mochimaru, Hitoshi Shindo
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2012
Materias:	frictional anisotropy caf2 fluorite slip system afm 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/f5c97dea3d224aa89458d3126092dd70
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spelling	oai:doaj.org-article:f5c97dea3d224aa89458d3126092dd702021-11-05T09:25:03ZParticipation of {1 0 0} Slip System in Sliding Friction at (0 0 1), (1 1 1) and (1 1 0) Surfaces of Fluorite (CaF2) Crystal1881-219810.2474/trol.7.81https://doaj.org/article/f5c97dea3d224aa89458d3126092dd702012-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/7/2/7_81/_pdf/-char/enhttps://doaj.org/toc/1881-2198Indentation experiments and friction measurements were performed at three low index faces of fluorite (CaF2) crystal. Deformation patterns were analyzed by observing step structures with atomic force microscopy (AFM). Upon indentation at (0 0 1) surface, {1 0 0} slip steps were formed at limited parts of the surface near the compressed area, where horizontal shear stress is added to vertical one. Upon indentation at (1 1 1) surface, the surface was split into 6 sectors separated by {1 1 1} cleavage lines. Steps formed on each sector were also explained by the {1 0 0} slip. The signs of steps suggest that the steps in three alternate sectors were formed by vertical compression, and the steps in the other sectors were formed mainly by horizontal compression. The slip mechanism was explained by a simple mechanical model. Upon scratching the (0 0 1) surface in [1 0 0] direction, only steps in [1 0 0] direction, not in [0 1 0] direction, were formed outside the wear track. Scratch on (1 1 1) surface activated the slip in three possible directions selectively, depending upon the scan directions of the stylus. Slip did not occur easily at (1 1 0) surface, where slip can occur in five directions close to each other. Frictional anisotropy was discussed in relation to the slip system.Kaori NikiGaku MochimaruHitoshi ShindoJapanese Society of Tribologistsarticlefrictional anisotropy caf2fluoriteslip systemafmPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 7, Iss 2, Pp 81-86 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	frictional anisotropy caf2 fluorite slip system afm Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	frictional anisotropy caf2 fluorite slip system afm Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Kaori Niki Gaku Mochimaru Hitoshi Shindo Participation of {1 0 0} Slip System in Sliding Friction at (0 0 1), (1 1 1) and (1 1 0) Surfaces of Fluorite (CaF2) Crystal
description	Indentation experiments and friction measurements were performed at three low index faces of fluorite (CaF2) crystal. Deformation patterns were analyzed by observing step structures with atomic force microscopy (AFM). Upon indentation at (0 0 1) surface, {1 0 0} slip steps were formed at limited parts of the surface near the compressed area, where horizontal shear stress is added to vertical one. Upon indentation at (1 1 1) surface, the surface was split into 6 sectors separated by {1 1 1} cleavage lines. Steps formed on each sector were also explained by the {1 0 0} slip. The signs of steps suggest that the steps in three alternate sectors were formed by vertical compression, and the steps in the other sectors were formed mainly by horizontal compression. The slip mechanism was explained by a simple mechanical model. Upon scratching the (0 0 1) surface in [1 0 0] direction, only steps in [1 0 0] direction, not in [0 1 0] direction, were formed outside the wear track. Scratch on (1 1 1) surface activated the slip in three possible directions selectively, depending upon the scan directions of the stylus. Slip did not occur easily at (1 1 0) surface, where slip can occur in five directions close to each other. Frictional anisotropy was discussed in relation to the slip system.
format	article
author	Kaori Niki Gaku Mochimaru Hitoshi Shindo
author_facet	Kaori Niki Gaku Mochimaru Hitoshi Shindo
author_sort	Kaori Niki
title	Participation of {1 0 0} Slip System in Sliding Friction at (0 0 1), (1 1 1) and (1 1 0) Surfaces of Fluorite (CaF2) Crystal
title_short	Participation of {1 0 0} Slip System in Sliding Friction at (0 0 1), (1 1 1) and (1 1 0) Surfaces of Fluorite (CaF2) Crystal
title_full	Participation of {1 0 0} Slip System in Sliding Friction at (0 0 1), (1 1 1) and (1 1 0) Surfaces of Fluorite (CaF2) Crystal
title_fullStr	Participation of {1 0 0} Slip System in Sliding Friction at (0 0 1), (1 1 1) and (1 1 0) Surfaces of Fluorite (CaF2) Crystal
title_full_unstemmed	Participation of {1 0 0} Slip System in Sliding Friction at (0 0 1), (1 1 1) and (1 1 0) Surfaces of Fluorite (CaF2) Crystal
title_sort	participation of {1 0 0} slip system in sliding friction at (0 0 1), (1 1 1) and (1 1 0) surfaces of fluorite (caf2) crystal
publisher	Japanese Society of Tribologists
publishDate	2012
url	https://doaj.org/article/f5c97dea3d224aa89458d3126092dd70
work_keys_str_mv	AT kaoriniki participationof100slipsysteminslidingfrictionat001111and110surfacesoffluoritecaf2crystal AT gakumochimaru participationof100slipsysteminslidingfrictionat001111and110surfacesoffluoritecaf2crystal AT hitoshishindo participationof100slipsysteminslidingfrictionat001111and110surfacesoffluoritecaf2crystal
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Participation of {1 0 0} Slip System in Sliding Friction at (0 0 1), (1 1 1) and (1 1 0) Surfaces of Fluorite (CaF2) Crystal

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