Temperature dependence effect of viscosity on ultrathin lubricant film melting
We study the melting of an ultrathin lubricant film under friction between atomically flat surfaces at temperature dependencies of viscosity described by Vogel-Fulcher relationship and by power expression, which are observed experimentally. It is shown that the critical temperature exists in both...
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| Datum: | 2006 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Інститут фізики конденсованих систем НАН України
2006
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| Schriftenreihe: | Condensed Matter Physics |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/121447 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Temperature dependence effect of viscosity on ultrathin lubricant film melting / A.V. Khomenko, I.A. Lyashenko // Condensed Matter Physics. — 2006. — Т. 9, № 4(48). — С. 695–702. — Бібліогр.: 21 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | We study the melting of an ultrathin lubricant film under friction between atomically flat surfaces at temperature
dependencies of viscosity described by Vogel-Fulcher relationship and by power expression, which are
observed experimentally. It is shown that the critical temperature exists in both cases the exceeding of which
leads to the melting of lubricant and, as a result, the sliding mode of friction sets in. The values of characteristic
parameters of lubricant are defined, which are needed for friction reduction. In the systems, where the
Vogel-Fulcher dependence is fulfilled, it is possible to choose the parameters at which the melting of lubricant
takes place even at zero temperature of friction surfaces. The deformational defect of the shear modulus is
taken into account in describing the lubricant melting according to the mechanism of the first-order transition. |
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