Processing of NiTi foams by transient liquid phase sintering

Ampika Bansiddhi, David C Dunand*

*Corresponding author for this work

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Porous NiTi was produced by sintering pre-alloyed NiTi powders (with small Ni addition to form Ni-rich composition) with NaCl powders which are removed to create 40-60 vol.% macropores which are open to the surface, blocky in shape, and 100-400 lm in size. The microporosity present between the NiTi powders is infiltrated by an in situ created NiTi-Nb eutectic liquid which, after solidification, densifies the NiTi powders into dense struts. This processing technique allows for separate control of the macroporous structure, and the densification and composition of the NiTi struts.

Original languageEnglish (US)
Pages (from-to)511-516
Number of pages6
JournalJournal of Materials Engineering and Performance
Volume20
Issue number4-5
DOIs
StatePublished - Jul 1 2011

Keywords

  • Bone implant
  • Eutectic
  • Microstructure
  • Porous
  • Shape memory
  • Shape memory bone implant

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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