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Production of highly porous titanium (Ti) scaffolds by vacuum-assisted foaming of titanium hydride (TiH2) suspension
- Authors
- Ahn, Min-Kyung; Jo, In-Hwan; Koh, Young-Hag; Kim, Hyoun-Ee
- Issue Date
- 1-Apr-2014
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Biomaterials; Metals and alloys; Porous materials; Powder technology; Titanium
- Citation
- MATERIALS LETTERS, v.120, pp.228 - 231
- Indexed
- SCIE
SCOPUS
- Journal Title
- MATERIALS LETTERS
- Volume
- 120
- Start Page
- 228
- End Page
- 231
- ISSN
- 0167-577X
- 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 degrees C, and finally freeze dried to remove frozen ice. The resulting green samples were heat-treated in a vacuum at 400 degrees C for 2 h to remove the organic phases and then at 1300 degrees 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 mu m), but lower compressive strength (8.9 +/- 1.6 MPa). (C) 2014 Elsevier B.V. All rights reserved.
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Collections - Graduate School > Department of Bioengineering > 1. Journal Articles
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Related Researcher
- Koh, Young Hag
- Department of Bioengineering