Production of highly aligned porous alumina ceramics by extruding frozen alumina/camphene body
- Authors
- Moon, Young-Wook; Shin, Kwan-Ha; Koh, Young-Hag; Choi, Won-Young; Kim, Hyoun-Ee
- Issue Date
- 1-10월-2011
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Extrusion; Porous ceramics; Mechanical properties; Al2O3; Biomedical applications
- Citation
- JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, v.31, no.11, pp.1945 - 1950
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
- Volume
- 31
- Number
- 11
- Start Page
- 1945
- End Page
- 1950
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/111400
- DOI
- 10.1016/j.jeurceramsoc.2011.04.033
- ISSN
- 0955-2219
- Abstract
- We herein propose a new technique for producing highly aligned porous ceramics by extruding a frozen ceramic/camphene body. To accomplish this, an alumina/camphene slurry with an initial alumina content of 10 vol% was first frozen unidirectionally in a 20 mm x 20 mm mold and extruded through a reduction die with a cross-section of 5 mm x 5 mm at room-temperature. This simple process enabled the formation of porous alumina ceramics with highly aligned pores as a replica of the camphene dendrites with a preferential orientation parallel to the extrusion direction. The sample showed much higher compressive strength of 280 +/- 80 kPa with a porosity of 83 vol% when tested parallel to the direction of pore alignment. In addition, these materials could be used as a valuable framework for the production of ceramic/epoxy composites, particularly with a lamellar structure, which would result in a remarkable increase in mechanical properties. (C) 2011 Elsevier Ltd. All rights reserved.
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Collections - Graduate School > Department of Bioengineering > 1. Journal Articles
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