Synthesis of Al2 O3 -TiC Nano-Composite Particles by a Novel Electro-Plasma Process

Author(s):  
Kaiyang Wang ◽  
Peigen Zhang ◽  
Jiandong Liang ◽  
S.M. Guo
2017 ◽  
Vol 24 (1) ◽  
pp. 123-128
Author(s):  
Chongwei An ◽  
Hequn Li ◽  
Binshuo Yu ◽  
Xiaoheng Geng ◽  
Jingyu Wang

AbstractNano nitrocellulose/cyclotetramethylene tetranitramine (NC/HMX) composite particles were precipitated from their co-solutions by the spray drying method. The nano composite samples were characterized by scanning electron microscope, transmission electron microscope and X-ray diffraction. Impact sensitivity and thermal decomposition properties of nano composites were also measured and analyzed. Results show that the product particles are close to spherical in shape and range from 0.5 μm to 5 μm in size. In the product particles, β-HMX particles with size ranging from 50 nm to 100 nm are uniformly and discretely dispersed in NC binders. The drop height of nano NC/HMX composite particles (66.1 cm) is more than triple as high as that of raw HMX (21.6 cm), exhibiting considerably low impact sensitivity. Moreover, nano composite particles are easier to decompose and decomposed more rapidly than do raw HMX under the thermal stimulus due to the lower peak temperature and activation energy and higher reaction rate. Therefore, nano composites are expected to be candidates filled in high burning rate propellants.


2020 ◽  
Vol 38 (4A) ◽  
pp. 586-593
Author(s):  
Hayder A. Sallal ◽  
Alla A. Abdul-Hameed ◽  
Farhad. M. Othman

This study describes the preparation and study of the properties of Nano composite particles prepared in a sol-gel method which consists of two materials (Αl2Ο3-MgΟ). The powder was evaluated by x-ray diffraction analysis, scanning electron microscopy analysis (SEM), particle size analysis, and energy dispersive x-ray analysis (EDX) and antibacterial test. The evaluation results of the nanocomposite particles shows a good distribution of the chemical composition between aluminum oxide and magnesium oxide, smoothness in particles  size where it reached to (54.9, 59.8) nm at calcination in (550 0C and 850 0C) respectively, formation of different shapes of nanoparticles and different  phases of the Αl2Ο3 particles (kappa and gamma) and nanopowder have well antibacterial action, Therefore, this reflects the efficiency of the proposed method to manufacture the nanocomposite powder and the possibility of using this powder as a strengthening material for the composite materials and using these composite materials in bio applications, especially in the fabrication of artificial limbs.


2015 ◽  
Vol 2 (1) ◽  
pp. 015018 ◽  
Author(s):  
Suiyuan Chen ◽  
Ting Wang ◽  
Yunjie Li ◽  
Jing Liang ◽  
Dan Wellburn ◽  
...  

2020 ◽  
Vol 5 (43) ◽  
pp. 13673-13677
Author(s):  
Yaning Li ◽  
Yu Chen ◽  
Wenhao Cui ◽  
Wenjie Tang ◽  
Boliang Wang ◽  
...  

2016 ◽  
Vol 44 ◽  
pp. 55-59 ◽  
Author(s):  
Rukhsana Shabnam ◽  
Hasan Ahmad

This work introduces a method for the preparation of magnetic nano-composite particles coated with highly crosslinked poly (lauryl methacrylate) (PLMA), a hydrophobic polymer containing long chain alkyl groups for application in waste water treatment. The produced magnetic composite particles named Fe3O4/SiO2/P(LMA-DVB) were characterized by Fourier Transform IR (FTIR), Transmission electron microscopy (TEM) and X-ray diffractometer (XRD) analyses. Then the prepared composite particles were used for the removal of organic pollutants from water. The adsorption behavior was dependent on the nature of the pollutants with congo red showed highest adsorption efficiency.


2003 ◽  
Vol 796 ◽  
Author(s):  
Zhexiong Tang ◽  
Hui Wan ◽  
Robert Clark ◽  
Sze C. Yang

ABSTRACTWe report the synthesis of new inorganic/organic composite particles with a core/shell structure. The core component is an inorganic oxide (e.g. TiO2, CeO2 or MoO3), and the shell component is a double-strand polyaniline. Three methods for material synthesis were examined. The electrochemical properties of one type of the composite particles show electronic interaction between the organic conducting polymer shell and its inorganic core. The double-strand polyaniline in the composite shows better pH stability of the conductive form than that of the corresponding single-strand polyaniline in a similar core/shell composite.


Sign in / Sign up

Export Citation Format

Share Document