Influence of 3Y-TZP on microstructure and mechanical properties of Al 2O3-based composites

Ming Tsung Weng, Wen Cheng J Wei, Chi-Yuen Huang

Research output: Contribution to journalArticle

Abstract

Al2O3 composites with different volume fractions of 3Y-TZP (3 mol% yttria-doped tetragonal zirconia polycrystalline) were prepared by using a colloidal process and pressure-casting into green specimens, then were pressureless sintered to full density at 1550°C. The resulted two-phase microstructure contained uniformly distributed and submicro- meter-sized grains. The addition of 15 vol% ZrO2 resulted in an increase in bending strength (average 656 MPa by 4 pt. test). Appreciate amount of m-ZrO2 phase was detected after fracture. The enhanced transformability results in an increase in flexural strength and toughness. The addition of 30 vol% Zro2 resulted in best toughness (5.4 MPam 0.5) and outstanding wear resistance (7.2×10-8 cm3/Nm).

Original languageEnglish
Pages (from-to)1540-1543
Number of pages4
JournalKey Engineering Materials
Volume353-358
Issue numberPART 3
Publication statusPublished - 2007

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Yttrium oxide
Zirconia
Bending strength
Toughness
Mechanical properties
Microstructure
Composite materials
Wear resistance
Volume fraction
Casting
zirconium oxide
yttria

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemical Engineering (miscellaneous)

Cite this

Weng, Ming Tsung ; Wei, Wen Cheng J ; Huang, Chi-Yuen. / Influence of 3Y-TZP on microstructure and mechanical properties of Al 2O3-based composites. In: Key Engineering Materials. 2007 ; Vol. 353-358, No. PART 3. pp. 1540-1543.
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Influence of 3Y-TZP on microstructure and mechanical properties of Al 2O3-based composites. / Weng, Ming Tsung; Wei, Wen Cheng J; Huang, Chi-Yuen.

In: Key Engineering Materials, Vol. 353-358, No. PART 3, 2007, p. 1540-1543.

Research output: Contribution to journalArticle

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