Evaluation of the Wear-Resistance of DLC-Coated Hard-on-Soft Pairings for Biomedical Applications

Rothammer B, Neusser K, Bartz M, Wartzack S, Schubert A, Marian M (2023)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2023

Series: Session 3 - Biotribology

Book Volume: O3.6

Event location: Banff, Alberta, Canada CA

DOI: 10.1016/j.wear.2023.204728

Abstract

Diamond-like carbon (DLC) coatings deposited on the articulating surfaces of total hip or knee arthroplasties have the potential to enhance the overall biotribological behavior and longevity. In this contribution, we employ an ultrahigh molecular weight polyethylene ball-on-three cobalt chromium or titanium alloy pin configuration lubricated by simulated body fluid to effectively carry out screening tests. Thus, the influence of the choice of the coated component (metallic and/or polymeric) as well as the differences between a higher and lower load case with non- and conventionally cross-linked polyethylene were studied. The studied coating systems featured excellent mechanical properties with a substantial enhancement of indentation hardness and elastic modulus ratios. The adhesion of the coatings as determined in modified scratch tests can be considered as very good to polymeric and as satisfactory to metallic substrates, thus confirming the potential for the use in total joint arthroplasties. Although the coatings predominantly led to an increase in friction due to the considerably higher roughness, wear was substantially reduced. While only the metallic components were mostly coated in studies reported in literature, our investigation showed that a coating of the polymer component in particular is of decisive importance for enhancing the wear performance and increasing the service life of load-bearing implants. Moreover, single sided coating results in higher wear of the uncoated counter-part. Therefore, coating systems deposited on both articulating surfaces, polymeric and metallic, should be pursued in the future.

Authors with CRIS profile

Benedict Rothammer Chair of Engineering Design Kevin Neusser Chair of Engineering Design Marcel Bartz Chair of Engineering Design Sandro Wartzack Chair of Engineering Design

Involved external institutions

Pontificia Universidad Católica de Chile CL Chile (CL)

How to cite

APA:

Rothammer, B., Neusser, K., Bartz, M., Wartzack, S., Schubert, A., & Marian, M. (2023). Evaluation of the Wear-Resistance of DLC-Coated Hard-on-Soft Pairings for Biomedical Applications. In Proceedings of the 24th International Conference on Wear of Materials. Banff, Alberta, Canada, CA.

MLA:

Rothammer, Benedict, et al. "Evaluation of the Wear-Resistance of DLC-Coated Hard-on-Soft Pairings for Biomedical Applications." Proceedings of the 24th International Conference on Wear of Materials, Banff, Alberta, Canada 2023.

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