Molecular Coverage Determines Sliding Wear Behavior of n-Octadecylphosphonic Acid Functionalized Cu–O Coated Steel Disks against Aluminum
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in: Materials, Jahrgang 13.2020, Nr. 2, 280, 01.01.2020.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - Molecular Coverage Determines Sliding Wear Behavior of n-Octadecylphosphonic Acid Functionalized Cu–O Coated Steel Disks against Aluminum
AU - Prünte, Stephan
AU - Music, Denis
AU - Terziyska, Velislava
AU - Mitterer, Christian
AU - Schneider, Jochen M.
N1 - Publisher Copyright: © 2020 by the authors.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - The sliding wear behavior of Cu-O coated steel disks functionalized with n-octadecylphosphonic acids was evaluated against aluminum in ball-on-disk tribometer experiments. After 5 m of sliding the friction coefficient of the functionalized sample with maximum molecular coverage is ≤0.3 ± 0.1. Surfaces with lower coverage mitigate friction and wear as well exhibiting initially similar low friction coefficients but reveal the breakdown of lubrication for sliding distances <5 m. The length of the low friction sliding distance before breakdown scales with the coverage of n-octadecylphosphonic acids on the Cu-O surface. Coverage hence determines the tribological behavior of the functionalized surface against sliding aluminum. As the coverage is increased, detrimental asperity contacts between the rubbing surfaces are reduced.
AB - The sliding wear behavior of Cu-O coated steel disks functionalized with n-octadecylphosphonic acids was evaluated against aluminum in ball-on-disk tribometer experiments. After 5 m of sliding the friction coefficient of the functionalized sample with maximum molecular coverage is ≤0.3 ± 0.1. Surfaces with lower coverage mitigate friction and wear as well exhibiting initially similar low friction coefficients but reveal the breakdown of lubrication for sliding distances <5 m. The length of the low friction sliding distance before breakdown scales with the coverage of n-octadecylphosphonic acids on the Cu-O surface. Coverage hence determines the tribological behavior of the functionalized surface against sliding aluminum. As the coverage is increased, detrimental asperity contacts between the rubbing surfaces are reduced.
UR - http://www.scopus.com/inward/record.url?scp=85079793789&partnerID=8YFLogxK
U2 - 10.3390/ma13020280
DO - 10.3390/ma13020280
M3 - Article
VL - 13.2020
JO - Materials
JF - Materials
SN - 1996-1944
IS - 2
M1 - 280
ER -
