Microstructure-mechanical behaviour relationship in alumina-calcium exaluminate composites

Authors

  • A. J. Sánchez-Herencia Instituto de Cerámica y Vidrio. Arganda del Rey. Madrid
  • R. Moreno Instituto de Cerámica y Vidrio. Arganda del Rey. Madrid
  • C. Baudín Instituto de Cerámica y Vidrio. Arganda del Rey. Madrid

DOI:

https://doi.org/10.3989/revmetalm.2001.v37.i2.457

Keywords:

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

Download data is not yet available.

Downloads

Published

2001-04-30

How to Cite

Sánchez-Herencia, A. J., Moreno, R., & Baudín, C. (2001). Microstructure-mechanical behaviour relationship in alumina-calcium exaluminate composites. Revista De Metalurgia, 37(2), 155–160. https://doi.org/10.3989/revmetalm.2001.v37.i2.457

Issue

Section

Articles

Most read articles by the same author(s)