scholarly journals Preparation of Ultrafine Barium Titanate Powder by Slurry Spray Pyrolysis

2009 ◽  
Vol 46 (2) ◽  
pp. 137-145
Author(s):  
Jong-Ho Lee ◽  
Kang-Heon Hur ◽  
Jung-Soo Lee
Keyword(s):  
Barium Titanate ◽  
Spray Pyrolysis ◽  
Barium Titanate Powder

scholarly journals Analysis of early-stage sintering mechanisms of mechanically activated BaTiO3

2006 ◽  
Vol 38 (3) ◽  
pp. 239-244 ◽  
Author(s):  
M.V. Nikolic ◽  
V.P. Pavlovic ◽  
V.B. Pavlovic ◽  
M.M. Ristic
Keyword(s):  
Barium Titanate ◽  
Temperature Interval ◽  
Ball Mill ◽  
Early Stage ◽  
Planetary Ball Mill ◽  
Heating Rates ◽  
Barium Titanate Powder ◽  
Powder Samples ◽  
Sintering Mechanisms

Barium-titanate powder was mechanically activated in a planetary-ball mill for 60 and 120 minutes. Non-isothermal sintering of non-activated and activated powder samples was investigated using a dilatometer in the temperature interval from room to 1380oC with three different heating rates (10, 20 and 30oC/min). Early-stage sintering mechanisms for all three types of samples were analyzed, showing significant differences between the non-activated and mechanically activated samples.

Preparation of Potassium Niobate/Barium Titanate Nanocomposite Ceramics with a Wide Barium Titanate Particle Size Distribution and their Dielectric Properties

2013 ◽  
Vol 582 ◽  
pp. 76-79
Author(s):  
Ichiro Fujii ◽  
Kenta Yamashita ◽  
Kouichi Nakashima ◽  
Yoshinori Fujikawa ◽  
Daisuke Tanaka ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Particle Size ◽  
Barium Titanate ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Molar Ratio ◽  
Narrow Particle Size Distribution ◽  
Potassium Niobate ◽  
Barium Titanate Powder ◽  
Wide Particle Size Distribution

Denser, solvothermally synthesized KNbO3 (KN) / BaTiO3 (BT) composites with heteroepitaxial interfaces were prepared using the barium titanate powder with a wide particle size distribution. The relative density was 68 - 80 %, which was larger than that of the composites prepared using the barium titanate powder with a narrow particle size distribution. The dielectric constant was 300 450 and it was maximized at the KN/BT molar ratio of 0.5. The origin was discussed with the microstructure and crystal structure.

Direct Synthesis of Barium Titanate Nanoparticles Via a Low Pressure Spray Pyrolysis Method

2005 ◽  
Vol 20 (10) ◽  
pp. 2873-2882 ◽  
Author(s):  
Wei-Ning Wang ◽  
I. Wuled Lenggoro ◽  
Yoshitake Terashi ◽  
Yu-Cong Wang ◽  
Kikuo Okuyama
Keyword(s):  
Barium Titanate ◽  
Spray Pyrolysis ◽  
Direct Synthesis ◽  
Low Pressure ◽  
Spray Pyrolysis Method ◽  
Pyrolysis Method ◽  
Spray Method ◽  
Barium Titanate Nanoparticles ◽  
The One ◽  
Synthesis Of Barium Titanate

The one-step synthesis of barium titanate (BaTiO3) nanoparticles was studied by employing a low-pressure spray pyrolysis (LPSP) method. The effects of temperature, pressure, and the addition of urea to the precursor were investigated experimentally. The results were compared with the experimental data of the conventional (atmospheric) spray pyrolysis method. It was shown that the BaTiO3 nanoparticles could be synthesized by the low-pressure method, while only spherical hollow particles with smooth surfaces could be produced by the conventional spray method. The addition of urea greatly improved the crystal growth and particle breakup due to extra heat supplied during the combustion reaction coupled with the evolution of gases. The dispersity of nanoparticles increased with the quantity of urea and with a decrease in pressure. The possible mechanism of the formation of BaTiO3 nanoparticles in the LPSP process was also proposed.

scholarly journals Surface modification of barium titanate powder particles

1999 ◽  
Vol 61 (2) ◽  
pp. 110-116 ◽  
Author(s):  
D Völtzke ◽  
S Gablenz ◽  
H.-P Abicht ◽  
R Schneider ◽  
E Pippel ◽  
...  
Keyword(s):  
Surface Modification ◽  
Barium Titanate ◽  
Barium Titanate Powder ◽  
Powder Particles
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