Enhanced Densification by Seeding of Sol‐Gel‐Derived Aluminum Titanate
作者:
A. V. Prasadarao,
Ulagaraj Selvaraj,
Sridhar Komarneni,
Amar S. Bhalla,
Rustum Roy,
期刊:
Journal of the American Ceramic Society
(WILEY Available online 1992)
卷期:
Volume 75,
issue 6
页码: 1529-1533
ISSN:0002-7820
年代: 1992
DOI:10.1111/j.1151-2916.1992.tb04220.x
出版商: Blackwell Publishing Ltd
关键词: aluminum titanate;sol‐gel;seeding;sintering;microstructure
数据来源: WILEY
摘要:
Aluminum titanate was prepared by two different methods. A monophasic gel was obtained by cohydrolysis and polycondensation reactions of chelated aluminumsec‐butoxide and titanium isopropoxide. A diphasic gel was obtained from boehmite and anatase. Effects of homogeneous dispersion of magnesium oxide and iron oxide incorporated as alkoxides in the monophasic gel and also the effects of isostructural seed on the crystallization and densification of aluminum titanate obtained from monophasic and diphasic gels were investigated. Seed particles of MgTi2O5facilitated lowering of crystallization temperature and enhanced densification of aluminum titanate. Microstructure studies indicated that almost‐microcrack‐free sintered bodies with smaller grains were formed from the seeded monophasic and diphasic
点击下载:
PDF
(520KB)
返 回