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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| Format: | Article |
| Language: | English |
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Japanese Society of Tribologists
2012-05-01
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| Series: | Tribology Online |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/trol/7/2/7_81/_pdf/-char/en |
| _version_ | 1818568717580107776 |
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| author | Kaori Niki Gaku Mochimaru Hitoshi Shindo |
| author_facet | Kaori Niki Gaku Mochimaru Hitoshi Shindo |
| author_sort | Kaori Niki |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-14T06:38:47Z |
| format | Article |
| id | doaj.art-f5c97dea3d224aa89458d3126092dd70 |
| institution | Directory Open Access Journal |
| issn | 1881-2198 |
| language | English |
| last_indexed | 2024-12-14T06:38:47Z |
| publishDate | 2012-05-01 |
| publisher | Japanese Society of Tribologists |
| record_format | Article |
| series | Tribology Online |
| spelling | doaj.art-f5c97dea3d224aa89458d3126092dd702022-12-21T23:13:18ZengJapanese Society of TribologistsTribology Online1881-21982012-05-0172818610.2474/trol.7.81trolParticipation of {1 0 0} Slip System in Sliding Friction at (0 0 1), (1 1 1) and (1 1 0) Surfaces of Fluorite (CaF2) CrystalKaori Niki0Gaku Mochimaru1Hitoshi Shindo2Graduate School of Science and Engineering, Chuo UniversityGraduate School of Science and Engineering, Chuo UniversityGraduate School of Science and Engineering, Chuo UniversityIndentation 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.https://www.jstage.jst.go.jp/article/trol/7/2/7_81/_pdf/-char/enfrictional anisotropy caf2fluoriteslip systemafm |
| spellingShingle | 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 Tribology Online frictional anisotropy caf2 fluorite slip system afm |
| 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_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_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_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 |
| topic | frictional anisotropy caf2 fluorite slip system afm |
| url | https://www.jstage.jst.go.jp/article/trol/7/2/7_81/_pdf/-char/en |
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