CHARACTERIZATION OF PRECIPITATION BEHAVIOR IN NIMONIC 263 BY ULTRASONIC VELOCITY MEASUREMENTS

2009 ◽  
Author(s):  
G. V. S. Murthy ◽  
Kumar Anish ◽  
G. Sridhar ◽  
T. Jayakumar ◽  
R. N. Ghosh ◽  
...  
Keyword(s):  
Ultrasonic Velocity ◽  
Velocity Measurements ◽  
Precipitation Behavior

Ultrasonic Characterization of Silver Nanoparticles

2005 ◽  
Vol 23 ◽  
pp. 271-274
Author(s):  
S. Rajagopalan ◽  
S.J. Sharma ◽  
V.Y. Nanotkar
Keyword(s):  
Silver Nanoparticles ◽  
Ultrasonic Velocity ◽  
Colloidal Solution ◽  
Adiabatic Compressibility ◽  
Ammonium Bromide ◽  
Velocity Measurements ◽  
Abnormal Behaviour ◽  
Phase Separations ◽  
Ultrasonic Characterization

Nanoparticles exhibit unusual properties in contrast with their bulk properties due to small particle size and quantum confinement. In the present work, ultrasonic velocity and density measurements have been carried out in solutions of silver nanoparticles in micellar dispersion of cetyl tri-metyl ammonium bromide, CTAB. Ultrasonic velocity measurements at different concentrations of surfactant and temperatures were carried out using Sing-Around technique, operated at 2MHz. It is observed that ultrasonic velocity and adiabatic compressibility show abnormal behaviour with increase in concentration of CTAB in the solution, indicating the existence of the phase separations in nano-colloidal solution.

Characterization of the alumina–zirconia ceramic system by ultrasonic velocity measurements

2009 ◽  
Vol 60 (8) ◽  
pp. 875-881 ◽  
Author(s):  
Hector Carreon ◽  
Alberto Ruiz ◽  
Ariosto Medina ◽  
Gerardo Barrera ◽  
Juan Zarate
Keyword(s):  
Ultrasonic Velocity ◽  
Zirconia Ceramic ◽  
Velocity Measurements ◽  
Ceramic System
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