Microstructure-mechanical behaviour relationship in alumina-calcium exaluminate composites
DOI:
https://doi.org/10.3989/revmetalm.2001.v37.i2.457Keywords:
Ceramic-ceramic composites, Alumina, Calcium hexaluminate, Colloidal processing, Sintering, Microstructure, Toughness,Abstract
The grain growth behaviour of dense alumina materials has been modified by the addition of calcium hexaluminate particles. Maximum dispersion has been obtained by colloidal processing routes. The influence of sintering temperature (1500-1600 °C) on the size and shape of the alumina grains has been established. The mechanical behaviour of three composite materials with the same composition (≈10 vol % CA6) and large microstructural differences has been studied in comparison with that of monophasic alumina of the same grain size. The influence of grain size and shape on toughness has been established. R-curve behaviour has been detected during fracture of the material with the alumina grains presenting the largest shape factor.
Downloads
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2001 Consejo Superior de Investigaciones Científicas (CSIC)
This work is licensed under a Creative Commons Attribution 4.0 International License.
© CSIC. Manuscripts published in both the printed and online versions of this Journal are the property of Consejo Superior de Investigaciones Científicas, and quoting this source is a requirement for any partial or full reproduction.
All contents of this electronic edition, except where otherwise noted, are distributed under a “Creative Commons Attribution 4.0 International” (CC BY 4.0) License. You may read the basic information and the legal text of the license. The indication of the CC BY 4.0 License must be expressly stated in this way when necessary.
Self-archiving in repositories, personal webpages or similar, of any version other than the published by the Editor, is not allowed.
