Production of highly porous titanium (Ti) scaffolds by vacuum-assisted foaming of titanium hydride (TiH2) suspension

Min Kyung Ahn, In Hwan Jo, Young Hag Koh, Hyoun Ee Kim

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We produced highly porous titanium (Ti) scaffolds with large interconnected pores using vacuum-assisted foaming. To achieve this, a titanium hydride (TiH2) suspension was vigorously foamed under reduced pressure, then rapidly frozen at -70 C, and finally freeze dried to remove frozen ice. The resulting green samples were heat-treated in a vacuum at 400 C for 2 h to remove the organic phases and then at 1300 C for 2 h to densify the Ti walls. Samples produced both with and without vacuum-assisted foaming showed good shape tolerance with a uniform porous structure. The samples produced using vacuum-assisted foaming had higher porosity (82±1.3 vol%) and larger pore size (150±65 μm), but lower compressive strength (8.9±1.6 MPa).

Original languageEnglish
Pages (from-to)228-231
Number of pages4
JournalMaterials Letters
Volume120
DOIs
Publication statusPublished - 2014 Apr 1

Keywords

  • Biomaterials
  • Metals and alloys
  • Porous materials
  • Powder technology
  • Titanium

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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