Dynamic freeze casting for the production of porous titanium (Ti) scaffolds

Hyun Do Jung, Se Won Yook, Tae Sik Jang, Yuanlong Li, Hyoun Ee Kim, Young-Hag Koh

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

This paper proposes dynamic freeze casting as a new manufacturing technique for producing porous Ti scaffolds with a uniform porous structure and good ductility. In this method, Ti/camphene slurries with various initial Ti contents (15, 20, and 25 vol.%) were frozen at 44 °C for 12 h in rotation, which allowed for the extensive growth of camphene crystals and the uniform construction of walls made of Ti particles. All the fabricated samples showed spherical-like pores surrounded by dense Ti walls that were uniformly formed after sintering at 1300 °C for 2 h in a vacuum. The porosity decreased from 71 to 52 vol.% with an increase in Ti content from 15 to 25 vol.%, whereas the pore size decreased from 362 to 95 μm. On the other hand, the compressive strength and stiffness increased considerably from 57 ± 4 to 183 ± 6 MPa and from 1.3 ± 0.5 to 5.0 ± 0.8 GPa, respectively, due to the decrease in the porosity of the samples.

Original languageEnglish
Pages (from-to)59-63
Number of pages5
JournalMaterials Science and Engineering C
Volume33
Issue number1
DOIs
Publication statusPublished - 2013 Jan 1

    Fingerprint

Keywords

  • Freeze casting
  • Mechanical properties
  • Porous metal
  • Titanium

ASJC Scopus subject areas

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

Cite this