Superelastic porous niti with adjustable porosities synthesized by powder metallurgical method

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

7 Scopus Citations
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Author(s)

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

Detail(s)

Original languageEnglish
Pages (from-to)2553-2558
Journal / PublicationJournal of Materials Engineering and Performance
Volume21
Issue number12
Publication statusPublished - Dec 2012

Abstract

The effects of cold compaction pressure, TiH2, and NH 4HCO3 on the physical and mechanical properties of porous NiTi fabricated by capsule-free-hot isostatic pressing (CF-HIP) were investigated. The porosities vary from 20 to 48% depending on the pressure. Porous NiTi with as great as 42% porosity and irregular pores can be prepared by the addition of TiH2, whereas 48% porosity and circular pores can be achieved by NH4HCO3 addition. All the porous NiTi fabricated by CF-HIP using these three methods exhibit superelastic behavior that closely matches human bones. © ASM International.

Research Area(s)

  • Implants, Porous niti, Powder metallurgy, Superelastic