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

Won Woong Park, Eun Kyeom Kim, Jun Hong Jeon, Jin Young Choi, Sun Woo Moon, Sang Ho Lim, Seung Hee Han

Research output: Contribution to journalArticle

9 Citations (Scopus)

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 Cr 2N. 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.

Original languageEnglish
Pages (from-to)8228-8233
Number of pages6
JournalApplied Surface Science
Volume258
Issue number20
DOIs
Publication statusPublished - 2012 Aug 1

Fingerprint

Ultrahigh molecular weight polyethylenes
Ion implantation
Nitrogen
Wear of materials
Ions
Plasmas
Surface treatment
ultra-high molecular weight polyethylene
Polymers
X ray photoelectron spectroscopy
Metals
Hardness
Thin films
Coatings
Substrates

Keywords

  • Artificial joints
  • Niobium nitride (NbN)
  • Nitrogen ion implantation
  • Pin-on-disk wear test
  • Plasma immersion ion implantation and deposition (PIII&D)
  • Total hip replacement

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

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. / Park, Won Woong; Kim, Eun Kyeom; Jeon, Jun Hong; Choi, Jin Young; Moon, Sun Woo; Lim, Sang Ho; Han, Seung Hee.

In: Applied Surface Science, Vol. 258, No. 20, 01.08.2012, p. 8228-8233.

Research output: Contribution to journalArticle

Park, Won Woong ; Kim, Eun Kyeom ; Jeon, Jun Hong ; Choi, Jin Young ; Moon, Sun Woo ; Lim, Sang Ho ; Han, Seung Hee. / 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. In: Applied Surface Science. 2012 ; Vol. 258, No. 20. pp. 8228-8233.
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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 Cr 2N. 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.",
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