Wear properties of porous niti orthopedic shape memory alloy

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

12 Scopus Citations
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Author(s)

  • Shuilin Wu
  • Xiangmei Liu
  • K. W K Yeung
  • Z. S. Xu

Detail(s)

Original languageEnglish
Pages (from-to)2622-2627
Journal / PublicationJournal of Materials Engineering and Performance
Volume21
Issue number12
Publication statusPublished - Dec 2012

Abstract

Porous NiTi shape memory alloy (SMA) scaffolds have great potential to be used as orthopedic implants because of their porous structure and superior physical properties. Its metallic nature provides it with better mechanical properties and Young's modulus close to that of natural bones. Besides allowing tissue ingrowth and transfer of nutrients, porous SMA possesses unique pseudoelastic properties compatible to natural hard tissues like bones and tendons, thus expediting in vivo osseointegration. However, the nickel release from debris and the metal surface may cause osteocytic osteolysis at the interface between the artificial implants and bone tissues. Subsequent mobilization may finally lead to implant failure. In this study, the wear properties of porous NiTi with different porosities processed at different treatment temperatures are determined. The results of the study show that the porosity, phase transformation temperature, and annealing temperature are major factors influencing the wear characteristics of porous NiTi SMA. © ASM International.

Research Area(s)

  • NiTi, Orthopedic implants, Porosity, Scaffold, Wear resistance

Citation Format(s)

Wear properties of porous niti orthopedic shape memory alloy. / Wu, Shuilin; Liu, Xiangmei; Yeung, K. W K et al.
In: Journal of Materials Engineering and Performance, Vol. 21, No. 12, 12.2012, p. 2622-2627.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review