Study on the influence of interfacial slip on the lubrication performance of a step slider bearing
ID Jing, Zhaogang (Author), ID Guo, Feng (Author), ID Jin, Wei (Author), ID Kalin, Mitjan (Author), ID Polajnar, Marko (Author)

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Experimental and theoretical studies have been completed in this paper to investigate the interface effect in the lubrication performance of a step slider bearing. Oleophobic fluorine-containing diamond-like carbon (F-DLC) coatings were prepared on the step slider to provide low affinity to lubrication films. With an optical slider bearing test rig, it is revealed that the F-DLC coating presents an increase in the film thickness/load-carrying capacity and a decrease in the coefficient of friction (COF), which is quite different from the common idea that both the load-carrying capacity and the COF are reduced at the same time. Contact angles measurement on the step slider shows that the affinity to the lubricant of the inlet step surface is lower than that of the outlet land, which can be attributed to the rougher surface of the step surface by the laser ablation. Theoretical analyses show that various interfacial slip velocities on the inlet step and the outlet land can generate different change in the load-carrying capacity and the COF. When the step surface presents lower interfacial slip velocity of the film than the land surface, increase in load-carrying capacity and decrease in the COF can be theoretically found to support the experiments finds.

Keywords:step slider bearing, diamond-like carbon coating, DLC coating, interfacial slip, film thickness, coefficient of friction
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status:Published
Publication version:Author Accepted Manuscript
Publication date:04.08.2022
Number of pages:9 str.
Numbering:Vol. 176, art. 107822
PID:20.500.12556/RUL-139586 This link opens in a new window
ISSN on article:0301-679X
DOI:10.1016/j.triboint.2022.107822 This link opens in a new window
COBISS.SI-ID:120203523 This link opens in a new window
Publication date in RUL:05.09.2022
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Record is a part of a journal

Title:Tribology international
Shortened title:Tribol. int.
Publisher:Butterworth Scientific
COBISS.SI-ID:26558976 This link opens in a new window

Secondary language

Keywords:stopnični drsni ležaji, prevleke na osnovi diamantu podobnega ogljika, DLC prevleke, mejni zdrs, debelina filma, koeficient trenja


Funder:Other - Other funder or multiple funders
Funding programme:National Natural Science Foun- dation of China
Project number:52175173/51775286

Funder:Other - Other funder or multiple funders
Funding programme:Exchange Program of the China-Slovenia Science and Technology Cooperation
Project number:12-3

Funder:ARRS - Slovenian Research Agency
Project number:P2-0231

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