Dynamic freeze casting for the production of porous titanium (Ti) scaffolds
- Authors
- Jung, Hyun-Do; Yook, Se-Won; Jang, Tae-Sik; Li, Yuanlong; Kim, Hyoun-Ee; Koh, Young-Hag
- Issue Date
- 1-1월-2013
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Titanium; Porous metal; Freeze casting; Mechanical properties
- Citation
- MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, v.33, no.1, pp.59 - 63
- Indexed
- SCIE
SCOPUS
- Journal Title
- MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
- Volume
- 33
- Number
- 1
- Start Page
- 59
- End Page
- 63
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/104229
- DOI
- 10.1016/j.msec.2012.08.004
- ISSN
- 0928-4931
- 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 degrees 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 degrees 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 mu m. 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. (c) 2012 Elsevier B.V. All rights reserved.
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Collections - Graduate School > Department of Bioengineering > 1. Journal Articles
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