Fabrication of ultrahigh porosity ceramics with biaxial pore channels

In Kook Jun, Young-Hag Koh, Hyoun E. Kim

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We fabricated highly porous ceramics having biaxial pore channels using a combination of CNC-machining and ceramic dip-coating methods. For this goal, the graphite template having one interconnected pore channel was prepared using the CNC-machining and lamination, and then dip-coated with tetragonal zirconia polycrystal (TZP) slurry, followed by heat-treatment at 900 °C for 3 h in air to remove the graphite template and at 1400 °C for 3 h to sinter TZP walls. This heat-treatment produced an addition 3-D channel as a representative of the graphite template, while preserving the preexisting channel, thereby allowing the sample to have biaxial pore channels. The fabricated sample showed ultra-high porosity (∼ 91%) and high compressive strength (∼ 6.5 MPa), as well as having a well controlled 375-μm2 pore structure.

Original languageEnglish
Pages (from-to)878-882
Number of pages5
JournalMaterials Letters
Volume60
Issue number7
DOIs
Publication statusPublished - 2006 Apr 1
Externally publishedYes

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Keywords

  • Bone scaffold
  • Ceramics
  • Mechanical properties
  • Porous
  • Rapid prototyping

ASJC Scopus subject areas

  • Materials Science(all)

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