Contribution of Slip and Cleavage in Friction and Wear at (1 0 -1 4) Surface of Magnesite (MgCO3) Crystal
Frictional force was measured using Bowden-Leben apparatus with a sapphire stylus at directional (1 0 -1 4) surface of magnesite crystal. Deformation patterns formed during the scratch in ± [4 2 -1] directions were observed with optical microscopy. With the normal load up to 460 mN, no tr...
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Japanese Society of Tribologists
2011
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oai:doaj.org-article:429282b5da3041118a730494b15da3b42021-11-05T09:25:30ZContribution of Slip and Cleavage in Friction and Wear at (1 0 -1 4) Surface of Magnesite (MgCO3) Crystal1881-219810.2474/trol.6.317https://doaj.org/article/429282b5da3041118a730494b15da3b42011-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/6/7/6_7_317/_pdf/-char/enhttps://doaj.org/toc/1881-2198Frictional force was measured using Bowden-Leben apparatus with a sapphire stylus at directional (1 0 -1 4) surface of magnesite crystal. Deformation patterns formed during the scratch in ± [4 2 -1] directions were observed with optical microscopy. With the normal load up to 460 mN, no trace of slip or cleavage was observed and the friction coefficient remained at 0.0085. Frictional asymmetry due to the tilt of carbonate ions was not recognized in this range. At higher normal loads, new components were added to the frictional force, with the appearance of traces of slip, and then, cleavage on {1 0 -1 4} faces. In contrast with the case of calcite, traces of the slip remained within the width of the stylus. Traces of the cleavage, on the other hand, reached far outside the wear track, and asymmetry was recognized in the pattern formation. In indentation experiments, the cleavage occurred in four directions, but slip on (0 0 0 1) was not recognized. In contrast with isostructural but softer calcite crystal, the difficulty in the (0 0 0 1) slip with magnesite keep the friction coefficient low toward higher normal loads.Kaori NikiMai KobayashiHitoshi ShindoJapanese Society of Tribologistsarticlefriction coefficientmgco3single crystalcleavagefrictional asymmetryPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 6, Iss 7, Pp 317-322 (2011) |
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DOAJ |
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friction coefficient mgco3 single crystal cleavage frictional asymmetry Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 |
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friction coefficient mgco3 single crystal cleavage frictional asymmetry 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 Contribution of Slip and Cleavage in Friction and Wear at (1 0 -1 4) Surface of Magnesite (MgCO3) Crystal |
| description |
Frictional force was measured using Bowden-Leben apparatus with a sapphire stylus at directional (1 0 -1 4) surface of magnesite crystal. Deformation patterns formed during the scratch in ± [4 2 -1] directions were observed with optical microscopy. With the normal load up to 460 mN, no trace of slip or cleavage was observed and the friction coefficient remained at 0.0085. Frictional asymmetry due to the tilt of carbonate ions was not recognized in this range. At higher normal loads, new components were added to the frictional force, with the appearance of traces of slip, and then, cleavage on {1 0 -1 4} faces. In contrast with the case of calcite, traces of the slip remained within the width of the stylus. Traces of the cleavage, on the other hand, reached far outside the wear track, and asymmetry was recognized in the pattern formation. In indentation experiments, the cleavage occurred in four directions, but slip on (0 0 0 1) was not recognized. In contrast with isostructural but softer calcite crystal, the difficulty in the (0 0 0 1) slip with magnesite keep the friction coefficient low toward higher normal loads. |
| format |
article |
| author |
Kaori Niki Mai Kobayashi Hitoshi Shindo |
| author_facet |
Kaori Niki Mai Kobayashi Hitoshi Shindo |
| author_sort |
Kaori Niki |
| title |
Contribution of Slip and Cleavage in Friction and Wear at (1 0 -1 4) Surface of Magnesite (MgCO3) Crystal |
| title_short |
Contribution of Slip and Cleavage in Friction and Wear at (1 0 -1 4) Surface of Magnesite (MgCO3) Crystal |
| title_full |
Contribution of Slip and Cleavage in Friction and Wear at (1 0 -1 4) Surface of Magnesite (MgCO3) Crystal |
| title_fullStr |
Contribution of Slip and Cleavage in Friction and Wear at (1 0 -1 4) Surface of Magnesite (MgCO3) Crystal |
| title_full_unstemmed |
Contribution of Slip and Cleavage in Friction and Wear at (1 0 -1 4) Surface of Magnesite (MgCO3) Crystal |
| title_sort |
contribution of slip and cleavage in friction and wear at (1 0 -1 4) surface of magnesite (mgco3) crystal |
| publisher |
Japanese Society of Tribologists |
| publishDate |
2011 |
| url |
https://doaj.org/article/429282b5da3041118a730494b15da3b4 |
| work_keys_str_mv |
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