Detail publikace

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.

Anglický název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

en

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova anglicky

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

Vydáno

01.12.2022

Nakladatel

SPRINGER/PLENUM PUBLISHERS

Místo

NEW YORK

ISSN

1023-8883

Ročník

70

Číslo

4

Strany od–do

1–16

Počet stran

16

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",
  year="2022",
  volume="70",
  number="4",
  month="December",
  pages="1--16",
  publisher="SPRINGER/PLENUM PUBLISHERS",
  address="NEW YORK",
  issn="1023-8883"
}