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

    Research output: Contribution to journalArticlepeer-review

    8 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-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%).

    Original languageEnglish
    Pages (from-to)395-398
    Number of pages4
    JournalJournal of the American Ceramic Society
    Volume99
    Issue number2
    DOIs
    Publication statusPublished - 2016 Feb 1

    Bibliographical 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:
    © 2015 The American Ceramic Society.

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Materials Chemistry

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