Boron carbide BxC (x=1/6−10) powders were synthesized through a microwave-assisted carbothermic reduction reaction as potential clean energy material. Their crystallographic structures and optical properties characterized. X-ray diffraction electron indicated that the amorphous. Electron energy-loss spectroscopy demonstrated composition of boron carbon was in amorphous materials, their chemical...

Zinc is essential micronutrients for proteins production in plants; also zinc is main composition of ribosome and is essential for their development. Zinc is active element in biochemical processes and has a chemical and biological interaction with some other elements. Phosphorus is the most important element which interferes on zinc uptake by plants. Phosphorus is the important element that in...

A series of donor-acceptor heteroleptic open sandwiches with formula CpM-M'Pyl (M = B, Al, Ga; M' = Li, Na; Cp = cyclopentadienyl; Pyl = pentadienyl) has been designed in silico using density functional theory. The most stable complexes are those containing boron as a donor atom. A molecular orbital analysis shows that the s character of the lone pair located at the group 13 element is mainly r...

The hysteresis motor is so named because it is producing mechanical torque utilizing the phenomenon of hysteresis. The rotor of a hysteresis motor is a cylindrical tube of high hysteresis loss permanent magnet material without windings or slots. This paper presents the design of a hysteresis permanent magnet motor using the finite element method. The rotor of the machine consists of 36% Cobalt ...

The structure and properties of a high-entropy alloy (HEA) subjected to saturation with boron atoms by combined electron-ion-plasma method are characterized. On HEA film 5 ?m thickness deposited on AISI 304 steel, (boron + chromium) 1 was then the system “(Cr B) / (HEA steel) substrate” irradiated pulsed electron beam. It is shown that wear resistance resulting more than 30 times higher origina...

– We have built a database of ab-initio total energies for elemental Boron in over 60 hypothetical crystal structures of varying coordination Z, such that every atom is equivalent. Fitting to each subset with a particular Z, we extract a classical effective potential, written as a sum over coordination shells and dominated by three-atom (bond angle dependent) terms. In the case Z = 6 (lowest in...

The use of composite materials increases due to its exceptionally better mechanical properties compared to their individual constitutes. The use of Nano materials as one of the constitutes of composite materials adds the advantages specially of high dynamic behavior due to their dimensions of nano scale. The carbon nanotubes (CNTs) and boron nitride nanotubes (BNNTs) possess excellent mechanica...