Novel Three-Dimensional Extrusion of Multilayered Ceramic/Camphene Mixture for Gradient Porous Ceramics

Ik Jun Choi; Young Wook Moon; Young Hag Koh; Hyoun Ee Kim

doi:10.1111/jace.14033

Novel Three-Dimensional Extrusion of Multilayered Ceramic/Camphene Mixture for Gradient Porous Ceramics

Ik Jun Choi, Young Wook Moon, Young Hag Koh, Hyoun Ee Kim

School of Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

This study proposes an innovative way of creating porous ceramics with a unique gradient porous structure using three-dimensional extrusion of a multilayered ceramic/camphene feed rod, denoted as "3D-Ex_m". This 3D-Ex_m technique utilizes the wall slip phenomenon during the extrusion process, which can create a gradient core/shell structure with a gradual change in the core/shell thickness ratio. In addition, the microstructure of ceramic filaments can be tuned through the use of the camphene as a pore-forming agent. Porous alumina ceramics produced using a bilayered feed rod comprised of the alumina/camphene mixtures with the relatively high (φ_H = 40 vol%) and low ceramic contents (φ_L = 10 vol%) showed a gradual change in porosity in the intermediate region between the relatively dense (porosity = ~3 vol%) and highly porous regions (porosity = ∼85 vol%).

Original language	English
Pages (from-to)	395-398
Number of pages	4
Journal	Journal of the American Ceramic Society
Volume	99
Issue number	2
DOIs	https://doi.org/10.1111/jace.14033
Publication status	Published - 2016 Feb 1

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1111/jace.14033

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title = "Novel Three-Dimensional Extrusion of Multilayered Ceramic/Camphene Mixture for Gradient Porous Ceramics",

abstract = "This study proposes an innovative way of creating porous ceramics with a unique gradient porous structure using three-dimensional extrusion of a multilayered ceramic/camphene feed rod, denoted as {"}3D-Exm{"}. This 3D-Exm technique utilizes the wall slip phenomenon during the extrusion process, which can create a gradient core/shell structure with a gradual change in the core/shell thickness ratio. In addition, the microstructure of ceramic filaments can be tuned through the use of the camphene as a pore-forming agent. Porous alumina ceramics produced using a bilayered feed rod comprised of the alumina/camphene mixtures with the relatively high (φH = 40 vol%) and low ceramic contents (φL = 10 vol%) showed a gradual change in porosity in the intermediate region between the relatively dense (porosity = ~3 vol%) and highly porous regions (porosity = ∼85 vol%).",

author = "Choi, {Ik Jun} and Moon, {Young Wook} and Koh, {Young Hag} and Kim, {Hyoun Ee}",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. NRF-2012R1A1B3003128) and the National Research Foundation of Korea (NRF) granted by the Korea government (NRF-2015R1A2A2A01007056). Publisher Copyright: {\textcopyright} 2015 The American Ceramic Society.",

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doi = "10.1111/jace.14033",

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AU - Choi, Ik Jun

AU - Moon, Young Wook

AU - Koh, Young Hag

AU - Kim, Hyoun Ee

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. NRF-2012R1A1B3003128) and the National Research Foundation of Korea (NRF) granted by the Korea government (NRF-2015R1A2A2A01007056). Publisher Copyright: © 2015 The American Ceramic Society.

PY - 2016/2/1

Y1 - 2016/2/1

N2 - This study proposes an innovative way of creating porous ceramics with a unique gradient porous structure using three-dimensional extrusion of a multilayered ceramic/camphene feed rod, denoted as "3D-Exm". This 3D-Exm technique utilizes the wall slip phenomenon during the extrusion process, which can create a gradient core/shell structure with a gradual change in the core/shell thickness ratio. In addition, the microstructure of ceramic filaments can be tuned through the use of the camphene as a pore-forming agent. Porous alumina ceramics produced using a bilayered feed rod comprised of the alumina/camphene mixtures with the relatively high (φH = 40 vol%) and low ceramic contents (φL = 10 vol%) showed a gradual change in porosity in the intermediate region between the relatively dense (porosity = ~3 vol%) and highly porous regions (porosity = ∼85 vol%).

AB - This study proposes an innovative way of creating porous ceramics with a unique gradient porous structure using three-dimensional extrusion of a multilayered ceramic/camphene feed rod, denoted as "3D-Exm". This 3D-Exm technique utilizes the wall slip phenomenon during the extrusion process, which can create a gradient core/shell structure with a gradual change in the core/shell thickness ratio. In addition, the microstructure of ceramic filaments can be tuned through the use of the camphene as a pore-forming agent. Porous alumina ceramics produced using a bilayered feed rod comprised of the alumina/camphene mixtures with the relatively high (φH = 40 vol%) and low ceramic contents (φL = 10 vol%) showed a gradual change in porosity in the intermediate region between the relatively dense (porosity = ~3 vol%) and highly porous regions (porosity = ∼85 vol%).

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Novel Three-Dimensional Extrusion of Multilayered Ceramic/Camphene Mixture for Gradient Porous Ceramics

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