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CHOUDHURY, D. GHOSH, S. ALI, F. VRBKA, M. HARTL, M. KŘUPKA, I.
Original Title
The influence of surface modification on friction and lubrication mechanism under a bovine serum lubricated condition
Type
journal article in Web of Science
Language
English
Original Abstract
Diamond like carbon (DLC) and micro dimple are two potential surface modification techniques that are extensively studied to be utilized into biotribological interfaces in order to reduce friction coefficient and wear rate. However, in situ observation of bovine serum lubricated DLC and micro dimpled surface contact are not well understood yet. In this study, a DLC coated and a micro dimpled steel ball rubbed against the Cr coated glass disk, where 25% bovine serum was used as a lubricant, and the temperature was maintained at 37° C. The behaviors of interface were captured using an optical interferometry and the friction coefficients were measured using a torque sensor simultaneously. The experimental results reveal that DLC/glass sliding is scuffling-free, having lowered friction coefficient, however the lubrication film formation is insignificant. On the other hand, the dimples retained lubrication and as a result, the wear of the glass disk were minimized, however friction coefficient were not reduced. Therefore, the DLC and micro dimpled individually have few improved tribological features, but their combination should be considered for maximizing the performances.
Keywords
Diamond like carbon; micro dimple; bovine serum; friction coefficient; film formation
Authors
CHOUDHURY, D.; GHOSH, S.; ALI, F.; VRBKA, M.; HARTL, M.; KŘUPKA, I.
Released
8. 4. 2016
Publisher
Taylor & Francis
Location
United Kingdom
ISBN
1040-2004
Periodical
TRIBOLOGY TRANSACTIONS
Year of study
59
Number
2
State
United States of America
Pages from
316
Pages to
322
Pages count
7
URL
http://www.tandfonline.com/doi/abs/10.1080/10402004.2015.1077409#.VfAuKun_Whc
BibTex
@article{BUT116116, author="CHOUDHURY, D. and GHOSH, S. and ALI, F. and VRBKA, M. and HARTL, M. and KŘUPKA, I.", title="The influence of surface modification on friction and lubrication mechanism under a bovine serum lubricated condition", journal="TRIBOLOGY TRANSACTIONS", year="2016", volume="59", number="2", pages="316--322", doi="10.1080/10402004.2015.1077409", issn="1040-2004", url="http://www.tandfonline.com/doi/abs/10.1080/10402004.2015.1077409#.VfAuKun_Whc" }