Effect of sintering atmosphere on microstructure and mechanical properties of TiO2-added zirconia-toughened alumina (Part 1) - diffusion of Ti and sinterability -

Chii Shyang Hwang, Yu Jing Chang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

To improve mechanical properties of TiO2-added zirconia-toughened alumina (ZTA), the microstructure and sinterability of ZTA composites fabricated from ZTA powders containing (Zr, Ti)O2 and sintered in an atmosphere of N2 + 5 %H2 were investigated. In the sintered ZTA, the concentration of Ti in grains of Al2O3 or (Zr, Ti)O2, was analyzed with EDS attached to an AEM apparatus. Experimental results indicated that some Ti ions diffused to the grain boundary and into Al2O3 grains, thereby enhancing the densification of ZTA powders sintered in N2 + 5 %H2, the grain growth is less than that of powders sintered in air. The solubility of TiO2 in (Zr, Ti)O2 in ZTA sintered in N2 + 5 %H2 was smaller than that of ZTA sintered in air, which diminished the tetragonal zirconia phase in the ZTA sintered body.

Original languageEnglish
Pages (from-to)987-991
Number of pages5
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume103
Issue number1202
DOIs
Publication statusPublished - 1995 Jan 1

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Effect of sintering atmosphere on microstructure and mechanical properties of TiO<sub>2</sub>-added zirconia-toughened alumina (Part 1) - diffusion of Ti and sinterability -'. Together they form a unique fingerprint.

  • Cite this