Development of functional properties in ceramics by microstructure control using a magnetic field

Research output: Contribution to journalArticle

Abstract

Tailoring the crystallographic orientation in ceramics is very useful for improving their properties. A magnetic field is shown to be very effective in controlling the crystallographic orientation in bulk ceramics. The particles were rotated to an angle minimizing the system energy by a magnetic torque generated from the interaction between the magnetic anisotropy and the applied magnetic field. This processing was applied to control the microstructure in lanthanum silicate oxyapatite (LSO) for SOFC and LiCoO2 for Li ion secondary battery. Electric conductivity parallel to the c-axis in the c-axis oriented LSO was higher than that perpendicular to the c-axis. The battery performance of the ideal textured cell fabricated using a rotating magnetic field has a significantly higher performance than a oriented cell prepared by a static magnetic field.

Original languageEnglish
Pages (from-to)41-45
Number of pages5
JournalJournal of the Society of Powder Technology, Japan
Volume54
Issue number1
DOIs
Publication statusPublished - 2017 Jan 1
Externally publishedYes

Keywords

  • Crystallographic orientation
  • Eectric conductivity
  • Eectrolyte
  • Fnctional ceramics
  • Magnetic field

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Catalysis
  • Filtration and Separation
  • Fluid Flow and Transfer Processes

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