Particle Size Modification of Thermally Stable Secondary Explosives for IM Applications

2008 ◽  
Vol 33 (1) ◽  
pp. 55-59 ◽  
Author(s):  
Adam Parker ◽  
Robert P. Claridge ◽  
Javid Hamid ◽  
William G. Proud
Keyword(s):  
Particle Size ◽  
Thermally Stable ◽  
Size Modification

Improved ionic conductivity and battery function in a lithium iodide solid electrolyte via particle size modification

2021 ◽  
pp. 138569
Author(s):  
Mikaela R. Dunkin ◽  
Steven T. King ◽  
Kenneth J. Takeuchi ◽  
Esther S. Takeuchi ◽  
Lei Wang ◽  
...  
Keyword(s):  
Particle Size ◽  
Ionic Conductivity ◽  
Solid Electrolyte ◽  
Lithium Iodide ◽  
Size Modification

Improved Ionic Conductivity and Battery Function in a Lithium Iodide Solid Electrolyte Via Particle Size Modification

2021 ◽  
Vol MA2021-01 (8) ◽  
pp. 2101-2101
Author(s):  
Mikaela R. Dunkin ◽  
Steven T. King ◽  
Kenneth J. Takeuchi ◽  
Esther S. Takeuchi ◽  
Lei Wang ◽  
...  
Keyword(s):  
Particle Size ◽  
Ionic Conductivity ◽  
Solid Electrolyte ◽  
Lithium Iodide ◽  
Size Modification

scholarly journals Particle size modification of curcumin in relation to its pharmacokinetics and tissue distribution profile

2018 ◽  
Vol WCP2018 (0) ◽  
pp. PO1-11-34
Author(s):  
Wenny T Ramadanty ◽  
Regina Pu Satyana ◽  
Gaviota Hartono ◽  
Serlie Fatrin ◽  
I Instiaty ◽  
...  
Keyword(s):  
Particle Size ◽  
Tissue Distribution ◽  
Distribution Profile ◽  
Size Modification ◽  
Tissue Distribution Profile

scholarly journals Particle-size modification by two size classes of the estuarine copepod Acartia clausi1,2

1976 ◽  
Vol 21 (2) ◽  
pp. 300-308 ◽  
Author(s):  
Harold B. O'Connors ◽  
Lawrence F. Small ◽  
Percy L. Donaghay
Keyword(s):  
Particle Size ◽  
Size Classes ◽  
Size Modification

scholarly journals Optimization of Spray Drying Conditions for Yield, Particle Size and Biological Activity of Thermally Stable Viral Vectors

2016 ◽  
Vol 33 (11) ◽  
pp. 2763-2776 ◽  
Author(s):  
Daniel A. LeClair ◽  
Emily D. Cranston ◽  
Zhou Xing ◽  
Michael R. Thompson
Keyword(s):  
Particle Size ◽  
Biological Activity ◽  
Spray Drying ◽  
Viral Vectors ◽  
Thermally Stable ◽  
Drying Conditions

Microstructural characterization of laser-melted/roller-quenched dicalcium silicate

1988 ◽  
Vol 46 ◽  
pp. 582-583
Author(s):  
C. J. Chan ◽  
K. R. Venkatachari ◽  
W. M. Kriven ◽  
J. F. Young
Keyword(s):  
Particle Size ◽  
Raw Materials ◽  
Shape Change ◽  
Microstructural Characterization ◽  
Particle Size Effect ◽  
Dicalcium Silicate ◽  
Laser Melting ◽  
Uniform Size ◽  
Cell Shape Change ◽  
Wide Range

Dicalcium silicate (Ca2SiO4) is a major component of Portland cement. It has also been investigated as a potential transformation toughener alternative to zirconia. It has five polymorphs: α, α'H, α'L, β and γ. Of interest is the β-to-γ transformation on cooling at about 490°C. This transformation, accompanied by a 12% volume increase and a 4.6° unit cell shape change, is analogous to the tetragonal-to-monoclinic transformation in zirconia. Due to the processing methods used, previous studies into the particle size effect were limited by a wide range of particle size distribution. In an attempt to obtain a more uniform size, a fast quench rate involving a laser-melting/roller-quenching technique was investigated.The laser-melting/roller-quenching experiment used precompacted bars of stoichiometric γ-Ca2SiO4 powder, which were synthesized from AR grade CaCO3 and SiO2xH2O. The raw materials were mixed by conventional ceramic processing techniques, and sintered at 1450°C. The dusted γ-Ca2SiO4 powder was uniaxially pressed into 0.4 cm x 0.4 cm x 4 cm bars under 34 MPa and cold isostatically pressed under 172 MPa. The γ-Ca2SiO4 bars were melted by a 10 KW-CO2 laser.

Analytical Electron Microscopy study of two vehicle-aged automotive exhaust catalysts having dissimilar activities

1989 ◽  
Vol 47 ◽  
pp. 272-273
Author(s):  
Sooho Kim ◽  
M. J. D’Aniello
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Noble Metal ◽  
Catalyst Deactivation ◽  
Analytical Electron Microscopy ◽  
Microscopy Study ◽  
Metal Particles ◽  
Automotive Exhaust ◽  
Exhaust Catalysts ◽  
Analytical Electron

Automotive catalysts generally lose-agtivity during vehicle operation due to several well-known deactivation mechanisms. To gain a more fundamental understanding of catalyst deactivation, the microscopic details of fresh and vehicle-aged commercial pelleted automotive exhaust catalysts containing Pt, Pd and Rh were studied by employing Analytical Electron Microscopy (AEM). Two different vehicle-aged samples containing similar poison levels but having different catalytic activities (denoted better and poorer) were selected for this study.The general microstructure of the supports and the noble metal particles of the two catalysts looks similar; the noble metal particles were generally found to be spherical and often faceted. However, the average noble metal particle size on the poorer catalyst (21 nm) was larger than that on the better catalyst (16 nm). These sizes represent a significant increase over that found on the fresh catalyst (8 nm). The activity of these catalysts decreases as the observed particle size increases.

Sign in / Sign up

Export Citation Format

Share Document