Influence of manganese on the sintering properties of tetragonal zirconia

S. Ramesh, W. J. Kelvin Chew, C. Y. Tan, J. Purbolaksono, A. M. Noor, M. A. Hassan, U. Sutharsini, Meenaloshini Satgunam, W. D. Teng

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The influence of small additions of MnO2 (up to 1 wt. %) on the sintering behaviour of yttria-stabilized zirconia sintered over the temperature range from 1250°C to 1500°C was investigated. It was found that the mechanical properties of Y-TZP were dependent on the dopant amount and sintering temperature. The results revealed that relative densities above 97.5 % of theoretical (i.e. < 5.95 Mg m-3) could be obtained in Y-TZPs sintered at low temperatures, 1250°C and 1300°C, with the additions of ≥ 0.3 wt. % MnO2. In comparison to the undoped samples, the additions of up to 1 wt. % MnO2 and for sintering up to 1350°C was found to be beneficial in enhancing the Vickers hardness of the ceramic. The fracture toughness of Y-TZP however, was found to increase only in the 1 wt. % MnO 2-doped samples when sintered above 1400°C. The relation between the measured mechanical properties is discussed with the emphasis on the role of the manganese oxide.

Original languageEnglish
Pages (from-to)28-32
Number of pages5
JournalCeramics - Silikaty
Volume57
Issue number1
Publication statusPublished - 18 Jun 2013

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Ceramics and Composites
  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Ramesh, S., Kelvin Chew, W. J., Tan, C. Y., Purbolaksono, J., Noor, A. M., Hassan, M. A., ... Teng, W. D. (2013). Influence of manganese on the sintering properties of tetragonal zirconia. Ceramics - Silikaty, 57(1), 28-32.