Analysis of abnormal grain growth of oriented LiCoO2 prepared by slip casting in a strong magnetic field

Hideto Yamada, Tohru S. Suzuki, Tetsuo Uchikoshi, Masato Hozumi, Toshiya Saito, Yoshio Sakka

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The relationship between the development of the crystallographic orientation and the grain growth behavior were studied. The degree of orientations of the green compacts and sintered samples were evaluated by the Lotgering factor. The f(0. 0. l) of all the samples were drastically increased with the increasing applied magnetic field strength. The f(0. 0. l) of the samples sintered at 1223. K were improved in comparison to those of the green compacts. However, the f(0. 0. l) value of the samples sintered at 1273. K were not increased at 4 T or lower. To characterize the grain growth process, these samples were analyzed using electron backscatter diffraction (EBSD). The sintered samples prepared in the magnetic field at 4 T or lower showed abnormal grain growth. The samples with an applied magnetic field of 8 T or higher had no abnormal grain growth. It was revealed that the orientation angle of the particles has an effect on the grain growth.

Original languageEnglish
Pages (from-to)3059-3064
Number of pages6
JournalJournal of the European Ceramic Society
Volume33
Issue number15-16
DOIs
Publication statusPublished - 2013 Dec 1

Keywords

  • Abnormal grain growth
  • Anisotropy
  • LiCoO
  • Orientation
  • Superconducting magnet

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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