Plasma-sprayed anisotropic mille-feuille-like porous 3.9YSZ coatings for solid oxide fuel cell electrodes

Hann Pyng Wu, Kuan Zong Fung

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1 Citation (Scopus)

Abstract

A porous coating process is presented for solid oxide fuel cell electrodes that reduce manufacturing costs and production time. The process used aluminum as a pore-former for creating anisotropic mille-feuille-like porosity in plasma-sprayed 3.9 mol.% yttria-stabilized zirconia (3.9YSZ) coatings. After etching, almost no aluminum phase can be detected by X-ray diffraction and the porous coating hardness decreases to below 40 HR15Y. A porosity of between 44.5 and 50.4 vol.% is obtained in the etched porous plasma-sprayed coating. Most of the monoclinic phase originally in the 3.9YSZ feedstock powder is suppressed after plasma spraying.

Original languageEnglish
Pages (from-to)186-192
Number of pages7
JournalJournal of the Ceramic Society of Japan
Volume120
Issue number1401
DOIs
Publication statusPublished - 2012

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry

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