scholarly journals Synthesis of Ferroelectric Na0.5Bi0.5TiO3 by MSS (Molten Salt Synthesis) Method

10.5772/19170 ◽  
2011 ◽  
Author(s):  
Teresa Zaremba
Keyword(s):  
Molten Salt ◽  
Synthesis Method ◽  
Molten Salt Synthesis

Formation Mechanism of SrBi2Nb2O9 Prepared by Melting Salt Method

2010 ◽  
Vol 177 ◽  
pp. 12-15
Author(s):  
Bao Rang Li ◽  
Xing Tao Liu ◽  
Yang Sheng Zheng ◽  
Hui Bin Chang
Keyword(s):  
Molten Salt ◽  
Formation Mechanism ◽  
Reaction Mechanisms ◽  
Synthesis Method ◽  
Molten Salt Synthesis ◽  
Synthesis Reaction ◽  
Simple Route ◽  
Temperature Range ◽  
Synthesis Route ◽  
Molten Medium

In this paper SrBi2Nb2O9 was prepared by molten salt synthesis method and KCl chosen as molten medium. In order to disclose possible formation mechanism of SrBi2Nb2O9, a simple route was established for comparison by dividing the starting precursors into four groups. With the help of XRD, possible synthesis route was analyzed. The results showed that pure SrBi2Nb2O9 powders could be obtained at temperature higher than 700oC by molten salt synthesis. Intense synthesis reaction happened in the temperature range from 500 to 700oC. The reaction mechanisms of SrBi2Nb2O9 included four steps, namely the formation of 1) SrBi2O4 at close to 600oC,2) BiNbO4 from the reaction of at 600-700 oC, 3) SrBi2Nb2O9 from the reaction of SrBi2O4 and Nb2O5 and 4)SrBi2Nb2O9 from the reaction of BiNbO4 and SrCO3. The molten salt could improve distribution and reactivity of the precursors and significant formation of SrBi2Nb2O9.

Novel Low Temperature Molten Salt Synthesis of a Li5La3Nb2O12 Solid State Electrolyte and Its Properties

2014 ◽  
Vol 1679 ◽  
Author(s):  
Shiang Teng ◽  
Wei Wang ◽  
Ashutosh Tiwari
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Molten Salt ◽  
Synthesis Method ◽  
Molten Salt Synthesis ◽  
X Ray Diffraction ◽  
Solid State Electrolyte ◽  
Li Ion ◽  
Quality Material ◽  
Li Content

ABSTRACTThe solid state electrolyte (SSE) of Li5La3Nb2O12 (LLNO) was synthesized via a novel molten salt synthesis (MSS) method at the relatively low temperature of 900°C. The low sintering temperature prevented the loss of lithium that commonly occurs during synthesis of the SSE using conventional solid state or wet chemical reactions. Recent publications have demonstrated that preserving the Li content is critical in improving the ionic conductivity of SSEs. The LLNO in this experiment showed a high Li-ion conductivity which is comparable to other values reported for LLNO. X-ray diffraction (XRD) measurements confirmed the formation of the cubic garnet Ia-3d crystal structure. In addition, the morphology was examined by scanning electron microscopy (SEM), which showed a uniform grain size and crack-free microstructure. These results demonstrate that MSS is a powerful synthesis method to fabricate LLNO at a relatively low temperature while still achieving a high quality material.

Application of Molten Salt Method in Hercynite Composite Powder Synthesis at Elevated Temperature

2017 ◽  
Vol 726 ◽  
pp. 460-464 ◽  
Author(s):  
Yan Chai ◽  
Mei Jie Zhang
Keyword(s):  
Molten Salt ◽  
Iron Powder ◽  
Synthesis Method ◽  
Reaction Medium ◽  
Raw Material ◽  
Molten Salt Synthesis ◽  
Alumina Powder ◽  
Molten Salt Method ◽  
Powder Synthesis ◽  
Powder Content

With molten salt method, a series of the hercynite powders were prepared using FeCl2·4H2O, active alumina and iron powder as raw material and KCl molten salt as reaction medium. The phase composition and micro-morphology were studied by techniques of XRD and SEM. The results showed that a high purity hercynite-alumina powder can be synthesized by molten salt synthesis method after heat treatment at 1000 °C in reducing atmosphere, the main phases were hercynite and α-Al2O3, and the increasing iron powder content can raise hercynite production quantity with developed crystal grain, the grain size was increased from 6μm to 10μm.

Sign in / Sign up

Export Citation Format

Share Document