Abstract
We herein propose a novel way of producing highly aligned porous alumina tubes by co-extruding an initial feed rod, which comprised of a pure camphene core and a frozen alumina/camphene shell. This new and simple technique produced alumina tubes (∼4.4 ± 0.1 mm in outer diameter) having uniform alumina walls (∼1.1 ± 0.12 mm in thickness) with highly aligned pores, which were created by removing the extensively elongated camphene dendrites in the extruded alumina/camphene shell. Furthermore, the heat treatment of the extruded bodies at 33°C, which is close to the freezing point of the alumina/camphene slurry, led to a considerable increase in the size of the aligned pores formed in the alumina walls, from ∼<5 to ∼54 μm with increasing heat-treatment time from 0 to 6 h. The compressive strength also increased significantly from 21 ± 1.6 to 61 ± 11.6 MPa, which was attributed mainly to the achievement of well densified alumina walls.
| Original language | English |
|---|---|
| Pages (from-to) | 1803-1806 |
| Number of pages | 4 |
| Journal | Journal of the American Ceramic Society |
| Volume | 95 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2012 Jun 1 |
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ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry
Cite this
Novel ceramic/camphene-based co-extrusion for highly aligned porous alumina ceramic tubes. / Moon, Young Wook; Shin, Kwan Ha; Koh, Young-Hag; Yook, Se Won; Han, Cheol Min; Kim, Hyoun Ee.
In: Journal of the American Ceramic Society, Vol. 95, No. 6, 01.06.2012, p. 1803-1806.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Novel ceramic/camphene-based co-extrusion for highly aligned porous alumina ceramic tubes
AU - Moon, Young Wook
AU - Shin, Kwan Ha
AU - Koh, Young-Hag
AU - Yook, Se Won
AU - Han, Cheol Min
AU - Kim, Hyoun Ee
PY - 2012/6/1
Y1 - 2012/6/1
N2 - We herein propose a novel way of producing highly aligned porous alumina tubes by co-extruding an initial feed rod, which comprised of a pure camphene core and a frozen alumina/camphene shell. This new and simple technique produced alumina tubes (∼4.4 ± 0.1 mm in outer diameter) having uniform alumina walls (∼1.1 ± 0.12 mm in thickness) with highly aligned pores, which were created by removing the extensively elongated camphene dendrites in the extruded alumina/camphene shell. Furthermore, the heat treatment of the extruded bodies at 33°C, which is close to the freezing point of the alumina/camphene slurry, led to a considerable increase in the size of the aligned pores formed in the alumina walls, from ∼<5 to ∼54 μm with increasing heat-treatment time from 0 to 6 h. The compressive strength also increased significantly from 21 ± 1.6 to 61 ± 11.6 MPa, which was attributed mainly to the achievement of well densified alumina walls.
AB - We herein propose a novel way of producing highly aligned porous alumina tubes by co-extruding an initial feed rod, which comprised of a pure camphene core and a frozen alumina/camphene shell. This new and simple technique produced alumina tubes (∼4.4 ± 0.1 mm in outer diameter) having uniform alumina walls (∼1.1 ± 0.12 mm in thickness) with highly aligned pores, which were created by removing the extensively elongated camphene dendrites in the extruded alumina/camphene shell. Furthermore, the heat treatment of the extruded bodies at 33°C, which is close to the freezing point of the alumina/camphene slurry, led to a considerable increase in the size of the aligned pores formed in the alumina walls, from ∼<5 to ∼54 μm with increasing heat-treatment time from 0 to 6 h. The compressive strength also increased significantly from 21 ± 1.6 to 61 ± 11.6 MPa, which was attributed mainly to the achievement of well densified alumina walls.
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UR - http://www.scopus.com/inward/citedby.url?scp=84861834546&partnerID=8YFLogxK
U2 - 10.1111/j.1551-2916.2012.05210.x
DO - 10.1111/j.1551-2916.2012.05210.x
M3 - Article
AN - SCOPUS:84861834546
VL - 95
SP - 1803
EP - 1806
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 6
ER -