Effect of added alumina on the feldspathic porcelain bodies - effect of size and shape of alumina on the densification and the flexural strength

Ryusuke Harada, Noriyuki Sugiyama, Hiroto Shin, Hideki Ishida

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The effects of size (0.88-11 μm) and shape of alumina particles on the densification, flexural strength and microstructure were investigated in the quartz-feldspar-kaolinite system. Relative density and flexural strength were demonstrated to have linear relationships and the slope of these lines (k-value) was dependent upon the size and shape of alumina particles. The flexural strength reached its maximum value when particles of 2 μm diameter were used. This phenomenon is explainable for coarse alumina due to the enlargement of the Griffith flaw for a small number of particles, but can not be explained in the case of fine alumina. The shape of alumina particles did not affect the flexural strength or the fracture toughness in any of our experiments.

Original languageEnglish
Pages (from-to)1151-1155
Number of pages5
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume104
Issue number1216
DOIs
Publication statusPublished - 1996

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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