scholarly journals Influence of Particle Size Distributions with Various Geometrical Standard Deviations on Slip-Cast Forming and Sintering Behavior in Submicron Alumina Powder Compacts

2006 ◽  
Vol 114 (1336) ◽  
pp. 1138-1143 ◽  
Author(s):  
Kozo YOKOTA ◽  
Shunsuke MURAI ◽  
Kazunari SHINAGAWA
Keyword(s):  
Particle Size ◽  
Sintering Behavior ◽  
Alumina Powder ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Slip Cast ◽  
Standard Deviations ◽  
Powder Compacts

scholarly journals Improvement of Ti Processing through Colloidal Techniques

2012 ◽  
Vol 520 ◽  
pp. 335-340 ◽  
Author(s):  
R.G. Neves ◽  
J.A. Escribano ◽  
Begoña Ferrari ◽  
Elena Gordo ◽  
Antonio Javier Sanchez-Herencia
Keyword(s):  
Particle Size ◽  
Sintering Behavior ◽  
Particle Sizes ◽  
Size Distributions ◽  
Colloid Chemistry ◽  
Particle Size Distributions ◽  
Broad Distribution ◽  
Dry Process ◽  
Chemical Physic ◽  
Titanium Powders

The colloid-chemistry control of metallic powders in aqueous slurries is proposed as a way to prepare Ti powders with small particle size for a better pressing behavior through the spray dry process. The chemical-physic behavior of titanium powders with two different particle size distributions dispersed in water has been studied by measuring the zeta potential as a function of pH, and dispersant concentration. The employment of poly-acrylic dispersants allowed the fabrication of stable slurries with solid contents up to 50 vol% that have been sprayed under different conditions to form agglomerates ranging between 50 and 200 µm. Conditions were selected to achieve spherical agglomerates formed by a broad distribution of particle sizes that shown excellent flowability. Agglomerates were pressed in a uniaxial die to measure the compressibility, showing an improvement in pressing behavior with respect to powders with bigger particle size. The sintering behavior is also improved, as values of 96 % of the theoretical density were obtained for compacts sintered in vacuum at 1100 °C for 30 minutes.

254. A Comparison of the Particle Size Distributions for Aerosols Generated During Wet Grinding and Dry Deburring of Beryllium

1999 ◽  
Author(s):  
K.K. Ellis ◽  
R. Buchan ◽  
M. Hoover ◽  
J. Martyny ◽  
B. Bucher-Bartleson ◽  
...  
Keyword(s):  
Particle Size ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Wet Grinding

Measurements of Mineral Particle Size Distributions by a Buoyancy Weighing Method

2010 ◽  
Vol 126 (10/11) ◽  
pp. 577-582 ◽  
Author(s):  
Katsuhiko FURUKAWA ◽  
Yuichi OHIRA ◽  
Eiji OBATA ◽  
Yutaka YOSHIDA
Keyword(s):  
Particle Size ◽  
Mineral Particle ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Weighing Method
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