Publication detail
The influence of Thin Boundary Films on Real Surface Roughness in Thin Film, Mixed EHD Contact
KŘUPKA, I. HARTL, M.
Czech title
Vliv tenkých mezných filmů na povrchové nerovnosti mazaných kontaktů
English title
The influence of Thin Boundary Films on Real Surface Roughness in Thin Film, Mixed EHD Contact
Type
journal article - other
Language
en
Original abstract
The behaviour of thin viscous boundary films in the rough surface rolling-sliding point contact operated under thin film lubrication conditions have been observed by thin film colorimetric interferometry. Changes in film thickness distribution within the lubricated contact between steel ball and glass disc were studies with both mineral base oil and mineral oil formulated with non-functionalized polyalkylmethacrylate (PAMA). Recent studies by other researchers showed that this polymer containing viscosity index improver exhibits some friction-reducing capabilities even though it forms only very thin boundary films on rubbing surfaces. Results obtained in the current study proved that thin viscous boundary films formed on rubbing surfaces can reduce asperities interactions of rubbing surfaces under very thin film conditions. Even though these boundary films do not separate rubbing surfaces completely they still can provide some protection of contacting bodies against excessive friction and wear.
Czech abstract
Článek přináší původní výsledky výzkumu vlivu tenkých mezných filmů na chování mazaných kontaktů provozovaných za podmínek smíšeného mazání.
English abstract
The behaviour of thin viscous boundary films in the rough surface rolling-sliding point contact operated under thin film lubrication conditions have been observed by thin film colorimetric interferometry. Changes in film thickness distribution within the lubricated contact between steel ball and glass disc were studies with both mineral base oil and mineral oil formulated with non-functionalized polyalkylmethacrylate (PAMA). Recent studies by other researchers showed that this polymer containing viscosity index improver exhibits some friction-reducing capabilities even though it forms only very thin boundary films on rubbing surfaces. Results obtained in the current study proved that thin viscous boundary films formed on rubbing surfaces can reduce asperities interactions of rubbing surfaces under very thin film conditions. Even though these boundary films do not separate rubbing surfaces completely they still can provide some protection of contacting bodies against excessive friction and wear.
Keywords in Czech
Smíšené mazání; tloušťka mazacího filmu; mezné filmy
Keywords in English
Mixed lubrication; Boundary films; Thickness; Polyalkylmethacrylate
RIV year
2007
Released
01.10.2007
Publisher
Elsevier
Location
Velká Británie
ISSN
0301-679X
Journal
Tribology International
Volume
40
Number
11
Pages from–to
1553–1560
Pages count
8
BIBTEX
@article{BUT43777,
author="Ivan {Křupka} and Martin {Hartl},
title="The influence of Thin Boundary Films on Real Surface Roughness in Thin Film, Mixed EHD Contact",
journal="Tribology International",
year="2007",
volume="40",
number="11",
month="October",
pages="1553--1560",
publisher="Elsevier",
address="Velká Británie",
issn="0301-679X"
}