Barium titanate powders synthesis from solvothermal reaction and supercritical treatment

Authors
Bocquet, JF Chhor, K Pommier, C
Citation
Jf. Bocquet et al., Barium titanate powders synthesis from solvothermal reaction and supercritical treatment, MATER CH PH, 57(3), 1999, pp. 273-280
Citations number
26
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS CHEMISTRY AND PHYSICS
ISSN journal
02540584 → ACNP
Volume
57
Issue
3
Year of publication
1999
Pages
273 - 280
Database
ISI
SICI code
0254-0584(19990125)57:3<273:BTPSFS>2.0.ZU;2-C
Abstract
A new semi-continuous process is reported for BaTiO3 powders synthesis unde r high pressure (10 MPa). The first step is the hydrolysis of the alkoxide BaTi(O-iC(3)H(7))(6) in isopropanol at temperatures between 100 degrees C a nd 200 degrees C in tubular flow reactor. The second one is a thermal treat ment of the formed solids, under the supercritical state of the solvent. Pa rticle size of the dried crystalline recovered powders is around 10 nm. Pow der sintering and ceramic dielectric properties have been tested. (C) 1999 Elsevier Science S.A. All rights reserved.