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 journalConference articlepeer-review


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
Issue numberPART 3
Publication statusPublished - 2007
EventAsian Pacific Conference for Fracture and Strength (APCFS'06) - Sanya, Hainan Island, China
Duration: 2006 Nov 222006 Nov 25

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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