Neusser K, Rothammer B, Marian M, Bartz M, Wartzack S (2021)
Publication Language: English
Publication Type: Conference contribution, Conference Contribution
Publication year: 2021
Event location: Online
URI: https://www.archiv.mfk.tf.fau.de?file=pubmfk_60be2dde08d30
Endoprosthetic replacement of the joint intends to restore the functionality and to provide the patient with a pain-free and more mobile life. However, aseptic loosening of the total knee arthroplasty (TKA) is a major cause of early prosthesis failure and is multifactorial in etiology with wear debris removed from the implant materials being largely responsible. For this reason, a great effort is made to reduce polymeric inlay wear by
applying tribologically effective surface modifications. Thus, this study concentrated on the effectiveness of wear-reducing amorphous carbon coating systems on the materials Co28Cr6Mo and UHMWPE. The tribological impact of the carbon coating systems can be particularly enhanced by a good adhesion to the substrate. Therefore, specific attention was also paid to the investigation of adhesion. The tribological behavior of the coated material pairings in comparison to the uncoated pairings was investigated utilizing a
climate-controlled pin-on-disc tribometer in rotational sliding mode. The tribological behavior was studied under mixed lubrications conditions for a total number of 200 000 sliding cycles. Bovine serum, tempered to 37 °C, was used as a substitute synovial fluid. The wear rates were determined using light and laser scanning microscopy every 20 000 cycles. Thereby, various wear mechanisms were detected, which in turn affected the coefficient of friction. The strong wear traces on UHMWPE indicated abrasive and adhesive wear. Consequently, the present study showed the applicability of well-adhering coatings to the considered materials used for applications in medical technology and the potential for wear reduction. Furthermore, the tribological characteristics obtained serve as a basis for further development of the coating systems.
APA:
Neusser, K., Rothammer, B., Marian, M., Bartz, M., & Wartzack, S. (2021). Biotribological behavior of amorphous carbon coatings on Co28Cr6Mo alloy and UHMWPE. In Proceedings of the 4th YOUNG TRIBOLOGICAL RESEARCHER SYMPOSIUM. Online.
MLA:
Neusser, Kevin, et al. "Biotribological behavior of amorphous carbon coatings on Co28Cr6Mo alloy and UHMWPE." Proceedings of the 4th YOUNG TRIBOLOGICAL RESEARCHER SYMPOSIUM, Online 2021.
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