Rod-like hydroxyapatite nanoparticles (n-HAp) with a highly ordered nanostructure were prepared by hydrothermal synthesis from calcium chloride, and phosphoric acid, as calcium and phosphorus sources, respectively. Various surfactant families such as cationic (CTAB), anionic (SDS) and nonionic (Triton X-100) were used as regulators of the nucleation and crystal growth. The synthesized nanopowde...

Abstract In Fe 3 O 4 nanopowders were carried out microwave absorption measurements at X-band (8.8-9.8 GHz), in the 89-300 K temperature range, by means of ferromagnetic resonance (FMR), magnetically modulated spectroscopy (MAMMAS) and low-field (LFMA). The Verwey transition around T v ∼ 137 has been detected employed FMR parameters: resonant field ( H res ) linewidth ΔH pp ), as function. MAMM...

A brief review of our recent research on preparation and characterization oxide nanoparticles their derivatives by hydrothermal growth is presented. series Ga2O3 , ZnO, TiO2 nanoparticles, as well derivative nanomaterials including GaN nanowires ZnO/TiO2 nanocompostes have been prepared. ZnO nanopowders produced using metal nitrate hydrates precursors, while Titanium isopropoxide was used for n...

The object of research is the process obtaining silicon nanomaterials for lithium-ion batteries energy storage devices, and subject technology gas-phase plasma-chemical synthesis production Si-nanoparticles. In course study, numerical simulation methods were used, which made it possible to determine parameters temperature fields, velocities concentrations. To study processes nanopowders, a plas...

Spark plasma sintering (SPS) or pulsed electric current sintering (PECS) is a sintering techni‐ que utilizing uniaxial force and a pulsed (on-off) direct electrical current (DC) under low at‐ mospheric pressure to perform high speed consolidation of the powder. This direct way of heating allows the application of very high heating and cooling rates, enhancing densifica‐ tion over grain growth p...

Conventional fiber reinforced plastics (FRP’s) have long been important if not indispensable in many crucial applications such as transportation, renewable energy, defense applications, as well as many others. Composite materials are of interest to these industries due to their attractive properties including high strength to weight ratio and high modulus to weight ratio. Comprehensive research...

The objective of this paper was to gain an understanding of the mixing and characterization of nanosized powders. Three different nanosized material systems were selected based on their physical and chemical properties. Mixing experiments of the selected nanopowders were performed using a variety of environmentally friendly dry powder processing devices and the rapid expansion of supercritical ...