Detail publikace

Behavior of thin viscous boundary films in lubricated contacts between micro-textured surfaces

KŘUPKA, I. HARTL, M. POLIŠČUK, R.

Originální název

Behavior of thin viscous boundary films in lubricated contacts between micro-textured surfaces

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Thin film colorimetric interferometry was used to map changes in film thickness in the vicinity of micro-dents of various depths produced on rubbing surfaces. It has been shown in recent studies that shallow micro-features within concentrated contact can increase mean film thickness by supplying more lubricant to the contact; however, this beneficial effect can also be accompanied by a local film thickness reduction. Nevertheless, these observations were done with mineral base oils that exhibited no boundary films formation. In this study the behavior of micro-textured surfaces are observed using formulated lubricant containing polyalcylmethacrylate (PAMA), viscosity index improver with boundary film forming properties. Obtained results show that an enlarged film thickness due to the presence of viscous boundary films is formed within the whole contact and these boundary films minimize the local film thickness reduction caused by micro-dents and further increase the efficiency of surface texturing within non-conformal contacts. It can be suggested from the obtained results that joint action of both boundary film formation and surface texturing combines both contributions that can help to increase tribological performances in different stages of machine parts operation by increasing lubrication film thickness.

Klíčová slova

Thin film lubrication; Film thickness; Surface texturing; Boundary films

Autoři

KŘUPKA, I.; HARTL, M.; POLIŠČUK, R.

Rok RIV

2008

Vydáno

12. 5. 2008

Nakladatel

Elsevier

Místo

NL

ISSN

0301-679X

Periodikum

Tribology International

Ročník

42

Číslo

X

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

7

Strany počet

7

BibTex

@article{BUT47111,
  author="Ivan {Křupka} and Martin {Hartl} and Radek {Poliščuk}",
  title="Behavior of thin viscous boundary films in lubricated contacts between micro-textured surfaces",
  journal="Tribology International",
  year="2008",
  volume="42",
  number="X",
  pages="1--7",
  issn="0301-679X"
}