Fabrication and characterization of thin and dense electrolyte-coated anode tube using thermoplastic coextrusion

Jong Jae Sun, Young Hag Koh, Won Young Choi, Hyoun Ee Kim

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Anode tubes coated with thin and dense electrolyte layers were fabricated by thermoplastic coextrusion, using a nickel oxide (NiO)-yttria-stabilized zirconia (YSZ) composite and YSZ as the anode and electrolyte materials, respectively. The initial feedrod with a diameter of 22 mm, comprised of three thermo-plastic compounds (carbon black (core), NiO-YSZ (intermediate), and YSZ (shell)), was coextruded through various orifices having diameters of 0.5, 1, and 2 mm at 120°C, producing continuous filaments with remarkable size reductions, while preserving the cross section of the initial feedrod. After removing the binder and carbon black used as the core material, the samples were cofired at 1350°C for 3 h in air, producing ceramic tubes with small diameters, ranging from 0.4 to 1.8 mm, where the surfaces of porous NiO-YSZ layers were coated with thin and dense YSZ layers, ranging from 22 to 98 μm.

Original languageEnglish
Pages (from-to)1713-1716
Number of pages4
JournalJournal of the American Ceramic Society
Volume89
Issue number5
DOIs
Publication statusPublished - 2006 May

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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