scholarly journals Effect of Organic Additives on Synthesis and Characterization of Nano Crystalline StrontiumMalonate

2011 ◽  
Vol 34 (1) ◽  
pp. 51-65
Keyword(s):  
Synthesis And Characterization ◽  
Organic Additives ◽  
Nano Crystalline

scholarly journals Synthesis and Characterization of Mixed Metal Oxide Nanocomposite Energetic Materials

2003 ◽  
Vol 800 ◽  
Author(s):  
Brady J. Clapsaddle ◽  
Lihua Zhao ◽  
Alex E. Gash ◽  
Joe H. Satcher ◽  
Kenneth J. Shea ◽  
...  
Keyword(s):  
Mass Transport ◽  
Metal Oxide ◽  
Energetic Materials ◽  
Silicon Oxide ◽  
Sol Gel ◽  
Synthesis And Characterization ◽  
Mixed Metal Oxide ◽  
Organic Additives ◽  
Metal Oxide Silicon

ABSTRACTIn the field of composite energetic materials, properties such as ingredient distribution, particle size, and morphology, affect both sensitivity and performance. Since the reaction kinetics of composite energetic materials are typically controlled by the mass transport rates between reactants, one would anticipate new and potentially exceptional performance from energetic nanocomposites. We have developed a new method of making nanostructured energetic materials, specifically explosives, propellants, and pyrotechnics, using sol-gel chemistry. A novel sol-gel approach has proven successful in preparing metal oxide/silicon oxide nanocomposites in which the metal oxide is the major component. Two of the metal oxides are tungsten trioxide and iron(III) oxide, both of which are of interest in the field of energetic materials. Furthermore, due to the large availability of organically functionalized silanes, the silicon oxide phase can be used as a unique way of introducing organic additives into the bulk metal oxide materials. As a result, the desired organic functionality is well dispersed throughout the composite material on the nanoscale. By introducing a fuel metal into the metal oxide/silicon oxide matrix, energetic materials based on thermite reactions can be fabricated. The resulting nanoscale distribution of all the ingredients displays energetic properties not seen in its microscale counterparts due to the expected increase of mass transport rates between the reactants. The synthesis and characterization of these metal oxide/silicon oxide nanocomposites and their performance as energetic materials will be discussed.

Synthesis and Characterization of Porous Nano-Crystalline Barium Hexaferrite

2012 ◽  
Vol 622-623 ◽  
pp. 860-863
Author(s):  
S. Hamidizadeh ◽  
A. Ataie ◽  
Amin Nozari
Keyword(s):  
High Density Polyethylene ◽  
Single Phase ◽  
Barium Hexaferrite ◽  
Weight Percent ◽  
High Energy ◽  
High Density ◽  
Synthesis And Characterization ◽  
Polyethylene Composite ◽  
Nano Crystalline

Barium hexaferrite/high density polyethylene composite was prepared from synthesized barium hexaferrite as matrix with 0, 10, 20, 30, 40 wt.% of high density polyethylene via a high energy planetary ball milling for 10 h. The milling products were isostatically pressed and finally sintered at 1250 °C for 1 h. Effect of HDPE content on morphology of the products were investigated using scanning electron microscope (SEM). Vibrating samplemagnetometer (VSM) analysis of single phase BaFe12O19 indicates saturation magnetization and coercivity of 52 emu/g and 4300 Oe, respectively. Visually, as the weight percent of the HDPE increases, more porous structure was observed. Moreover, the density of the sintered sampleslinearly decreased from 4.16 to 1.41 g/cm3 by increasing the amount of HDPE from 0 to 40 wt.%.

Combustion synthesis and characterization of nano-crystalline LaFeO3 powder

2009 ◽  
Vol 206 (7) ◽  
pp. 1420-1424 ◽  
Author(s):  
Hui Shen ◽  
Guofeng Cheng ◽  
Anhua Wu ◽  
Jiayue Xu ◽  
Jingtai Zhao
Keyword(s):  
Combustion Synthesis ◽  
Synthesis And Characterization ◽  
Nano Crystalline

Synthesis and Characterization of Nano Crystalline Ca8ZnSb6O24 Functional Ceramic

2015 ◽  
Vol 2 (3) ◽  
pp. 1031-1035
Author(s):  
S. Anila ◽  
Jijimon Kumpakkattu Thomas ◽  
Annamma John ◽  
Sam Solomon
Keyword(s):  
Synthesis And Characterization ◽  
Nano Crystalline ◽  
Functional Ceramic
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