HIGH-STRENGTH AND HIGH-FRACTURE-TOUGHNESS CERAMICS IN THE AL2O3 LAAL11O18 SYSTEMS/

Authors
YASUOKA M HIRAO K BRITO ME KANZAKI S
Citation
M. Yasuoka et al., HIGH-STRENGTH AND HIGH-FRACTURE-TOUGHNESS CERAMICS IN THE AL2O3 LAAL11O18 SYSTEMS/, Journal of the American Ceramic Society, 78(7), 1995, pp. 1853-1856
Citations number
10
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of the American Ceramic Society → ACNP
ISSN journal
00027820
Volume
78
Issue
7
Year of publication
1995
Pages
1853 - 1856
Database
ISI
SICI code
0002-7820(1995)78:7<1853:HAHCIT>2.0.ZU;2-V
Abstract
Control of microstructure in the Al2O3/LaAL(11)O(18) system was perfor med, Elongated alumina grains were formed by doping with small additio n of silica, and 20 vol% lanthanaluminate was formed in situ by the re action of LaAlO3-Al2O3 in an alumina matrix. Strengths of over 600 MPa and a high fracture toughness (6 MPa . m(1/2)) were achieved in the m aterial with both elongated Al2O3 grains and LaAl11O18 platelets. Gene rally antagonistic properties such as strength and fracture toughness have been made compatible in the same ceramic system.