Electric-field effects on sintering and reaction to form aluminum titanatefrom binary alumina-titania sol-gel powders

Authors
Stanciu, LA Groza, JR Kodash, VY Crisan, M Zaharescu, M
Citation
La. Stanciu et al., Electric-field effects on sintering and reaction to form aluminum titanatefrom binary alumina-titania sol-gel powders, J AM CERAM, 84(5), 2001, pp. 983-985
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN journal
00027820 → ACNP
Volume
84
Issue
5
Year of publication
2001
Pages
983 - 985
Database
ISI
SICI code
0002-7820(200105)84:5<983:EEOSAR>2.0.ZU;2-D
Abstract
The field-activated sintering technique (FAST) was applied to simultaneousl y sinter and react sol-gel amorphous powders to form AI,TIO,. Densities clo se to theoretical and conversion to AI(2)TiO(5) (to 92.5%) have been achiev ed using FAST at 1050 degrees -1200 degreesC for 10 min. Conventional sinte ring of the same powders at 1300 degreesC for 2 h resulted in 88.9% Al2TiO5 and similar to 75% of theoretical density. The enhanced sintering and comp ound formation using FAST have been explained by the synergistic effects of precursor reactivity, nanosized powders, and electric-field effects.