Synthesis of barium titanate powders by low-temperature aqueous synthesis using a new segmented flow tubular reactor

被引：17

作者：

Bowen, P ^{[1
]}

Donnet, M

Testino, A

Viviani, M

Buscaglia, MT

Buscaglia, V

Nanni, P

机构：

[1] Swiss Fed Inst Technol, Dept Mat Sci & Engn, Power Technol Lab, CH-1015 Lausanne, Switzerland

[2] CNR, Inst Phys Chem Mat, I-16149 Genoa, Italy

[3] Univ Genoa, Dept Chem & Proc Engn, I-16129 Genoa, Italy

来源：

EURO CERAMICS VII, PT 1-3 | 2002年 / 206-2卷

关键词：

nanopowder; barium titanate; precipitation; Segmented Flow Tubular Reactor;

D O I：

10.4028/www.scientific.net/KEM.206-213.21

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Barium titanate powders have been synthesised using a Low Temperature Aqueous Synthesis (LTAS) method in both batch and Segmented Flow Tubular Reactors. For similar stoichiometries the SFTR powder shows a much lower degree of aggregation with 80% particles < 100nm for the SFTR and only 57% < 100nm for the batch case. Specific surface areas for the SFTR powder are also higher at around 59m(2)/g compared to 38m(2)/g for the batch powders indicative of primary particle sizes of 24 mn (SFTR) and 31 run (batch). After freeze drying, redispersion and slip casting the SFTR powder gives improved sintered densities (95.5 from 93.25%) the sintered microstructures are very similar.

引用

页码：21 / 24

页数：4

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