A study of TiN-coated metal-on-polymer bearing materials for hip prosthesis

Sung Bai Lee, Jin Young Choi, Won Woong Park, Jun Hong Jeon, Sung Ok Won, Ji Young Byun, Sang Ho Lim, Seung Hee Han

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The TiN-coated metal-on-polymer hip prosthetic pair has the potential to reduce wear debris of UHMWPE (ultra-high molecular weight polyethylene) and to prevent metallic-ion-induced cytotoxicity. However, high quality and adherent film is a key to the clinical success of hip prostheses. In this study, titanium nitride (TiN) films were deposited on stainless steel using plasma immersion ion implantation & deposition (PIII&D) technique to create high-quality film and an adherent interface. The chemical state and composition were analyzed by X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES) and energy dispersive spectroscopy (EDS). The mechanical properties of the films were characterized using a micro-hardness tester and a pin-on-disk wear tester and an x-ray diffractometer (XRD) was used for a crystallographic analysis. The PIII&D-treated TiN films showed a stoichiometric and (200) preferred orientation and micro-hardness up to 150 % higher than untreated film. A TiN-coated specimen using the PIII&D process also showed less UHMWPE wear compared to untreated specimens. The volumetric wear rate of UHMWPE could be reduced by as much as 42 % compared to when Co-Cr alloy was used. The results of this study show that advanced TiN-coating via the PIII&D process is a viable means of reducing UHMWPE wear in the metal-on-polymer bearing couple.

Original languageEnglish
Pages (from-to)679-686
Number of pages8
JournalMetals and Materials International
Volume16
Issue number4
DOIs
Publication statusPublished - 2010 Aug

Keywords

  • Coating
  • Implantation
  • Interface
  • Sputtering
  • Wear

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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  • Cite this

    Lee, S. B., Choi, J. Y., Park, W. W., Jeon, J. H., Won, S. O., Byun, J. Y., Lim, S. H., & Han, S. H. (2010). A study of TiN-coated metal-on-polymer bearing materials for hip prosthesis. Metals and Materials International, 16(4), 679-686. https://doi.org/10.1007/s12540-010-0824-y