A Study of the Structure Formed by Thickeners of Greases Using Atomic Force Microscope
This paper describes an experimental study on quantitative evaluation of correlation between the structure formed by thickeners and yield stress of greases. In order to evaluate the thickener structures, untreated surface of greases was observed by using an atomic force microscope, and an index was...
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Japanese Society of Tribologists
2013
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oai:doaj.org-article:4c0649ab1f514b948591d50ab3d52a242021-11-05T09:24:31ZA Study of the Structure Formed by Thickeners of Greases Using Atomic Force Microscope1881-219810.2474/trol.8.76https://doaj.org/article/4c0649ab1f514b948591d50ab3d52a242013-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/8/1/8_76/_pdf/-char/enhttps://doaj.org/toc/1881-2198This paper describes an experimental study on quantitative evaluation of correlation between the structure formed by thickeners and yield stress of greases. In order to evaluate the thickener structures, untreated surface of greases was observed by using an atomic force microscope, and an index was obtained from AFM images to describe the degree of dispersion of the thickeners. The index physically represented both factors of shape and distribution of thickeners. The results for twelve types of lithium soap greases with different base oils and thickener concentrations showed good correlation between the index of the degree of dispersion and the yield stress of the greases. This relationship indicated that uniform distribution of thickeners in greases caused higher yield stress.Michita HokaoNoriyuki InamiEri WatabeAtsushi YokouchiJoichi SugimuraJapanese Society of Tribologistsarticlegreasestructureatomic force microscopeyield stressthickenerslithium soapdegree of dispersionPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 8, Iss 1, Pp 76-82 (2013) |
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DOAJ |
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DOAJ |
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EN |
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grease structure atomic force microscope yield stress thickeners lithium soap degree of dispersion Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 |
| spellingShingle |
grease structure atomic force microscope yield stress thickeners lithium soap degree of dispersion Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Michita Hokao Noriyuki Inami Eri Watabe Atsushi Yokouchi Joichi Sugimura A Study of the Structure Formed by Thickeners of Greases Using Atomic Force Microscope |
| description |
This paper describes an experimental study on quantitative evaluation of correlation between the structure formed by thickeners and yield stress of greases. In order to evaluate the thickener structures, untreated surface of greases was observed by using an atomic force microscope, and an index was obtained from AFM images to describe the degree of dispersion of the thickeners. The index physically represented both factors of shape and distribution of thickeners. The results for twelve types of lithium soap greases with different base oils and thickener concentrations showed good correlation between the index of the degree of dispersion and the yield stress of the greases. This relationship indicated that uniform distribution of thickeners in greases caused higher yield stress. |
| format |
article |
| author |
Michita Hokao Noriyuki Inami Eri Watabe Atsushi Yokouchi Joichi Sugimura |
| author_facet |
Michita Hokao Noriyuki Inami Eri Watabe Atsushi Yokouchi Joichi Sugimura |
| author_sort |
Michita Hokao |
| title |
A Study of the Structure Formed by Thickeners of Greases Using Atomic Force Microscope |
| title_short |
A Study of the Structure Formed by Thickeners of Greases Using Atomic Force Microscope |
| title_full |
A Study of the Structure Formed by Thickeners of Greases Using Atomic Force Microscope |
| title_fullStr |
A Study of the Structure Formed by Thickeners of Greases Using Atomic Force Microscope |
| title_full_unstemmed |
A Study of the Structure Formed by Thickeners of Greases Using Atomic Force Microscope |
| title_sort |
study of the structure formed by thickeners of greases using atomic force microscope |
| publisher |
Japanese Society of Tribologists |
| publishDate |
2013 |
| url |
https://doaj.org/article/4c0649ab1f514b948591d50ab3d52a24 |
| work_keys_str_mv |
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