Paper Title:
Effect of CoO Doping on the Sintering Ability and Mechanical Properties of Y-TZP
  Abstract

The effect of CoO addition into Y-TZP (Yttria doped Tetragonal Zirconia Polycrystals) was studied on the evolution of its sintering ability, grain size, grain boundary structure and mechanical properties. The doping of a small amount of CoO effectively reduced the sintering temperature. A small amount of CoO up to ~ 0.3 mol% was effective for the suppression of grain growth, but the addition of 1.0 mole % resulted in an enhanced grain growth. The hardness and toughness of the CoO doped TZP were about the same as those of undoped TZP. Furthermore, despite the grain refinement, CoO doped TZP did not exhibit improved mechanical properties. This may be suggesting that CoO dopant had weakened the grain boundary strength.

  Info
Periodical
Materials Science Forum (Volumes 449-452)
Edited by
S.-G. Kang and T. Kobayashi
Pages
265-268
DOI
10.4028/www.scientific.net/MSF.449-452.265
Citation
T. Onda, H. Yamauchi, M. Hayakawa, "Effect of CoO Doping on the Sintering Ability and Mechanical Properties of Y-TZP", Materials Science Forum, Vols. 449-452, pp. 265-268, 2004
Online since
March 2004
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Dong Gyu Chang, Joon Hyung Lee, Jeong Joo Kim
Abstract:SnO2 ceramics were co-doped with the aliovalent ions of CoO and Nb2O5 and the grain growth behavior of the SnO2 was investigated. When only...
529
Authors: Dong Gyu Chang, Joon Hyung Lee, Jeong Joo Kim
Abstract:In this study, aliovalent ions of Nb2O5 and CoO were co-doped in SnO2 with different Nb2O5/CoO ratios and the grain growth rate of SnO2 was...
533
Authors: Ji Yeon Ryu, Y. Kim, Yoon Joo Lee, Young Soo Lim, Won Seon Seo, Woo Teck Kwon, Heon Jin Choi, Soo Ryong Kim
D. High Performance Materials
Abstract:Antimony doped tin oxide (ATO) is a typical p-type semiconductor and widely used due to its good properties such as electrical conductivity...
303
Authors: Ji Wei Fan, Dan Liu, Xiao Li Zhang, Hui Jun Zhao, Zheng Guo Zhang, Yamin Zheng
Chapter 1: New Materials and Advanced Materials
Abstract:SnO2 based varistor ceramics, as new type of varistor materials, have attracted increasing interest around the world. However, the effect of...
35
Authors: Calambras Pulgarin Heidi, Albano Maria Patricia, Garrido Liliana Beatriz
Chapter 6: Ceramics in Biomedicine
Abstract:The ability of zirconia ceramics to develop a bioactive surface is of great importance for biomedical applications. For that, it is also...
330