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Hydrothermal synthesis of barium str...

Xu, Huiwen.

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Hydrothermal synthesis of barium strontium titanate and bismuth titanate materials.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Hydrothermal synthesis of barium strontium titanate and bismuth titanate materials./
Author:	Xu, Huiwen.
Description:	171 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5729.
Contained By:	Dissertation Abstracts International64-11B.
Subject:	Engineering, Materials Science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3113891

Hydrothermal synthesis of barium strontium titanate and bismuth titanate materials.
Xu, Huiwen.

Hydrothermal synthesis of barium strontium titanate and bismuth titanate materials. - 171 p.

Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5729.

Thesis (Ph.D.)--Purdue University, 2003.

Hydrothermal processing facilitates the synthesis of crystalline ceramic materials of varying composition or complex crystal structure. The present work can be divided into two parts. First is to study the low temperature hydrothermal synthesis of bismuth titanate. Second is to study both thermodynamic and kinetic aspects of the hydrothermally synthesized barium strontium titanate.Subjects--Topical Terms:

1017759
Engineering, Materials Science.

Hydrothermal synthesis of barium strontium titanate and bismuth titanate materials.
LDR:02549nmm 2200277 4500 001 1865356
005 20041217071849.5
008 130614s2003 eng d
035 $a (UnM)AAI3113891
035 $a AAI3113891
040 $a UnM $c UnM
100 1 $a Xu, Huiwen. $3 1952807
245 1 0 $a Hydrothermal synthesis of barium strontium titanate and bismuth titanate materials.
300 $a 171 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5729.
500 $a Major Professor: Elliott B. Slamovich.
502 $a Thesis (Ph.D.)--Purdue University, 2003.
520 $a Hydrothermal processing facilitates the synthesis of crystalline ceramic materials of varying composition or complex crystal structure. The present work can be divided into two parts. First is to study the low temperature hydrothermal synthesis of bismuth titanate. Second is to study both thermodynamic and kinetic aspects of the hydrothermally synthesized barium strontium titanate.
520 $a A chelating agent was used to form a Bi-Ti gel precursor. By hydrothermally treating the Bi-Ti gel, crystalline bismuth titanate has been synthesized at 160°C for the first time. Microstructural evolution during the low temperature synthesis of bismuth titanate can be divided into two stages, including condensation of Bi-Ti gel particles and crystallization of bismuth titanate. Crystallization of bismuth titanate occurred by an in situ transformation mechanism at an early stage followed by a dissolution-reprecipitation mechanism.
520 $a Phase separation was observed in hydrothermally synthesized barium strontium titanate (BST). By hydrothermally treating BST powders between 250°C--300°C, an asymmetrical miscibility gap was found in the BaTiO3-SrTiO 3 system at low temperatures (T ≤ 320°C). A subregular solid solution model was applied to calculate the equilibrium compositions and the Gibbs free energy of formation of BST solid solution at low temperatures (T ≤ 320°C). The Gibbs free energy of formation of Sr-rich BST phase is larger than that of Ba-rich BST phase. Kinetic studies of single phase BST solid solution at 80°C show that, compared to the BaTiO3 or Ba-rich BST, SrTiO3 and Sr-rich BST powders form at lower reaction rates.
590 $a School code: 0183.
650 4 $a Engineering, Materials Science. $3 1017759
690 $a 0794
710 2 0 $a Purdue University. $3 1017663
773 0 $t Dissertation Abstracts International $g 64-11B.
790 1 0 $a Slamovich, Elliott B., $e advisor
790 $a 0183
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3113891