Paper Title:
3YTZP-Al2O3 Powders Synthesized by the Coprecipitation Route
  Abstract

The addition of alumina in a zirconia stabilized in a tetragonal phase matrix enhances ceramic hardness and inhibits the tetragonal → monoclinic phase transformation of zirconia when exposed to an aqueous environment. These characteristics are important for applications such as bioceramics and structural materials. For these purposes, the strict control of powder synthesis and the processing conditions are vital to tailor the ceramic characteristics. This work evaluates the influence of 20 wt% alumina in a Y-TZP matrix on powder characteristics, obtained by coprecipitation route, and calcined from 600 to 1200°C for 1 and 3 hours. The powders obtained were characterized by X-ray diffraction, scanning electronic microscopy, laser diffraction and gaseous adsorption (BET). The results reveal that presence of Al3+ inhibits the crystallization of composite at lower temperatures.

  Info
Periodical
Materials Science Forum (Volumes 530-531)
Edited by
Lucio Salgado and Francisco Ambrozio Filho
Pages
677-682
DOI
10.4028/www.scientific.net/MSF.530-531.677
Citation
R.H.L. Garcia, V. Ussui, N. B. de Lima, D. R. R. Lazar, "3YTZP-Al2O3 Powders Synthesized by the Coprecipitation Route", Materials Science Forum, Vols. 530-531, pp. 677-682, 2006
Online since
November 2006
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Price
$32.00
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