Wear of UHMWPE against nitrogen-ion-implanted and NbN-coated Co-Cr-Mo alloy formed by plasma immersion ion implantation and deposition for artificial joints
- Authors
- Park, Won-Woong; Kim, Eun-Kyeom; Jeon, Jun-Hong; Choi, Jin-Young; Moon, Sun-Woo; Lim, Sang-Ho; Han, Seung-Hee
- Issue Date
- 1-8월-2012
- Publisher
- ELSEVIER
- Keywords
- Plasma immersion ion implantation and deposition (PIII& D); Artificial joints; Total hip replacement; Pin-on-disk wear test; Niobium nitride (NbN); Nitrogen ion implantation
- Citation
- APPLIED SURFACE SCIENCE, v.258, no.20, pp.8228 - 8233
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED SURFACE SCIENCE
- Volume
- 258
- Number
- 20
- Start Page
- 8228
- End Page
- 8233
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/107739
- DOI
- 10.1016/j.apsusc.2012.05.026
- ISSN
- 0169-4332
- Abstract
- NbN thin film was deposited on the Co-Cr-Mo alloy by plasma immersion ion implantation and deposition (PIII&D) to reduce the volume wear rate of UHMWPE. In addition, nitrogen ions were implanted on the surface of the Co-Cr-Mo alloy prior to the NbN film deposition in order to increase the hardness of the substrate. XPS analysis revealed that nitrogen ions were implanted into the surface of the Co-Cr-Mo alloy, leading to the formation of CrN and Cr2N. The UHMWPE volume wear rate was measured using a pin-on-disk tribometer. The wear test result showed that the volume wear rate of UHMWPE against NbN-coated Co-Cr-Mo alloy declined by 20% as compared to that in the untreated Co-Cr-Mo alloy. In addition, the UHMWPE wear rate against the nitrogen-ion-implanted and NbN-coated Co-Cr-Mo alloy could be drastically reduced by up to 48%. It can be concluded that a combination of prior nitrogen ion implantation and NbN coating via PIII&D is a promising surface treatment tool for extending the lifetime of metal-on-polymer artificial joints. (C) 2012 Elsevier B.V. All rights reserved.
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