Critical effect of cubic phase on aging in 3mol% yttria-stabilized zirconia ceramics for hip replacement prosthesis

Jérôme Chevalier; Sylvain Deville; Etienne Münch; Romain Jullian; Frédéric Lair

doi:10.1016/j.biomaterials.2004.01.002

Critical effect of cubic phase on aging in 3mol% yttria-stabilized zirconia ceramics for hip replacement prosthesis

Biomaterials. 2004 Nov;25(24):5539-45. doi: 10.1016/j.biomaterials.2004.01.002.

Authors

Jérôme Chevalier¹, Sylvain Deville, Etienne Münch, Romain Jullian, Frédéric Lair

Affiliation

¹ Department of Research into the Metallurgy and Physical Properties of Materials, National Institute of Applied Sciences, Associate Research Unit 5510, 69621 Villeurbanne Cedex, France. jerome.chevalier@insa-lyon.fr

PMID: 15142736
DOI: 10.1016/j.biomaterials.2004.01.002

Abstract

The isothermal tetragonal-to-monoclinic transformation of 3Y-TZP ceramics sintered at two different temperatures (1450 degrees C and 1550 degrees C) and duration (2 and 5h) is investigated at 134 degrees C in steam. Particular attention is paid to the presence of a cubic phase and its effect on isothermal aging. Sintering at 1550 degrees C can result in a significant amount of large cubic grains in the specimens, that have a detrimental impact on aging resistance, especially for the first stage of the aging process. Cubic grains appear to be enriched in yttrium, which in turn leads to a depletion of yttrium in the neighboring tetragonal grains. These grains will act as nucleation sites for tetragonal-to-monoclinic transformation. Even for specimens sintered at lower temperature, i.e. 1450 degrees C, the presence of a cubic phase is expected from the phase diagram, leading to a significant effect on aging sensitivity.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Ceramics / chemistry*
Cold Temperature
Hip Prosthesis*
Kinetics
Microscopy, Atomic Force
Microscopy, Electron, Scanning
Yttrium / chemistry*
Zirconium / chemistry*

Substances

Yttrium
Zirconium