Publication result detail

DLC-Coated Thermoplastics: Tribological Analyses under Lubricated Rolling-Sliding Conditions

REITSCHUSTER, S.; MAIER, E.; LOHNER, T.; STAHL, K.; BOBZIN, K.; KALSCHEUER, C.; THIEX, M.; ŠPERKA, P.; HARTL, M.

Original Title

DLC-Coated Thermoplastics: Tribological Analyses under Lubricated Rolling-Sliding Conditions

English Title

DLC-Coated Thermoplastics: Tribological Analyses under Lubricated Rolling-Sliding Conditions

Type

WoS Article

Original Abstract

The goal of this work is to evaluate the potential of diamond-like carbon (DLC) coatings on thermoplastic polymers for friction and wear reduction in highly stressed rolling-sliding contacts. Therefore, hydrogen-containing DLC coatings were deposited on the polymer surface by a low-temperature high power pulsed magnetron sputtering (HPPMS) physical vapor deposition (PVD) process. The rolling-sliding contact between coated polyamide 66 (PA66) or coated polyether ether ketone (PEEK) against case-hardened steel 16MnCr5 is investigated in a twin-disk tribometer at normal loads up to F-N = 1,000 N, sum velocities between 1 m/s <= v(sigma) <= 16 m/s and slip ratios up to s = 50%. Results show a friction reduction with the application of DLC on the considered polymers compared to uncoated polymers under specific lubrication conditions. High solid losses caused by the polymer's internal damping properties dominate the temperature behavior of the polymer, even when coated with DLC. Regarding the wear behavior, DLC coatings show potential especially under severe mixed lubrication conditions with high-solid load portion and sliding. The knowledge gained about coated polymers can be used to improve the overall tribological performance in terms of friction and wear of thermoplastic machine elements like gears.

English abstract

The goal of this work is to evaluate the potential of diamond-like carbon (DLC) coatings on thermoplastic polymers for friction and wear reduction in highly stressed rolling-sliding contacts. Therefore, hydrogen-containing DLC coatings were deposited on the polymer surface by a low-temperature high power pulsed magnetron sputtering (HPPMS) physical vapor deposition (PVD) process. The rolling-sliding contact between coated polyamide 66 (PA66) or coated polyether ether ketone (PEEK) against case-hardened steel 16MnCr5 is investigated in a twin-disk tribometer at normal loads up to F-N = 1,000 N, sum velocities between 1 m/s <= v(sigma) <= 16 m/s and slip ratios up to s = 50%. Results show a friction reduction with the application of DLC on the considered polymers compared to uncoated polymers under specific lubrication conditions. High solid losses caused by the polymer's internal damping properties dominate the temperature behavior of the polymer, even when coated with DLC. Regarding the wear behavior, DLC coatings show potential especially under severe mixed lubrication conditions with high-solid load portion and sliding. The knowledge gained about coated polymers can be used to improve the overall tribological performance in terms of friction and wear of thermoplastic machine elements like gears.

Keywords

DLC coating; Polymers; Lubrication; Friction; Temperature; Elastohydrodynamics

Key words in English

DLC coating; Polymers; Lubrication; Friction; Temperature; Elastohydrodynamics

Authors

REITSCHUSTER, S.; MAIER, E.; LOHNER, T.; STAHL, K.; BOBZIN, K.; KALSCHEUER, C.; THIEX, M.; ŠPERKA, P.; HARTL, M.

RIV year

2023

Released

01.12.2022

Publisher

SPRINGER/PLENUM PUBLISHERS

Location

NEW YORK

ISBN

1023-8883

Periodical

TRIBOLOGY LETTERS

Volume

70

Number

4

State

United States of America

Pages from

1

Pages to

16

Pages count

16

URL

https://link.springer.com/article/10.1007/s11249-022-01664-6

Full text in the Digital Library

http://hdl.handle.net/11012/209139

BibTex

@article{BUT182794,
  author="Stefan {Reitschuster} and Enzo {Maier} and Thomas {Lohner} and Karsten {Stahl} and Kirsten {Bobzin} and Christian {Kalscheuer} and Matthias {Thiex} and Petr {Šperka} and Martin {Hartl}",
  title="DLC-Coated Thermoplastics: Tribological Analyses under Lubricated Rolling-Sliding Conditions",
  journal="TRIBOLOGY LETTERS",
  year="2022",
  volume="70",
  number="4",
  pages="1--16",
  doi="10.1007/s11249-022-01664-6",
  issn="1023-8883",
  url="https://link.springer.com/article/10.1007/s11249-022-01664-6"
}

Documents

s11249-022-01664-6