Results 241 to 250 of about 386,614 (305)

High-pressure deformation and amorphization in boron carbide

Journal of Applied Physics, 2019
Icosahedral boron-rich solids fall second in hardness to diamondlike structures and have been the subject of intense investigations over the past two decades, as they possess low density, high thermal, and mechanical stability at high temperatures, and ...
A. Awasthi, G. Subhash
semanticscholar   +1 more source

Thermodynamics kinetics of boron carbide under gamma irradiation dose

International Journal of Modern Physics B, 2019
In this paper, high purity boron carbide samples were irradiated by [Formula: see text]Co gamma radioisotope source (0.27 Gy/s dose rate) with 50, 100, 150 and 200 irradiation hours at room-temperature.
M. Mirzayev, E. Demir, K. Mammadov, R. Mehdiyeva, S. Jabarov, A. Beril Tuğrul, S. Biira, N. Tiep, T. Thabethe   +8 more
semanticscholar   +1 more source

Ferroboron and Boron Carbide

2020
For the first time, free boron was obtained in 1808 by Louis Joseph Gay-Lussac and Louis Jacques Tenard by heating B2O3 boron oxide with metallic potassium.
Mikhail Gasik, Viktor Dashevskii, Aitber Bizhanov   +2 more
openaire   +1 more source

Long‐Life Lithium–Sulfur Batteries with a Bifunctional Cathode Substrate Configured with Boron Carbide Nanowires

Advances in Materials, 2018
Developing high‐energy‐density lithium–sulfur (Li–S) batteries relies on the design of electrode substrates that can host a high sulfur loading and still attain high electrochemical utilization.
Liu Luo, Sheng‐Heng Chung, Hooman Yaghoobnejad Asl, A. Manthiram   +3 more
semanticscholar   +1 more source

Sputtering behavior of boron and boron carbide

Journal of Nuclear Materials, 1992
Sputtering yields of boron were measured with D + and B + ions for normal and oblique angles of incidence. Self-sputtering data of boron carbide were simulated in the experiment by using Ne + ions. The energies of the impinging ions were between 20 eV and 10 keV.
Hechtl, E., Mazanec, A., Eckstein, W., Roth, J., Garcia-Rosales, C.   +4 more
openaire   +2 more sources

Theoretical phase diagram of boron carbide from ambient to high pressure and temperature

Journal of Applied Physics, 2019
The phase diagram of boron carbide is calculated within the density functional theory as a function of temperature and pressure up to 80 GPa, accounting for icosahedral, graphitelike, and diamondlike atomic structures.
A. Jay, O. H. Duparc, J. Sjakste, N. Vast   +3 more
semanticscholar   +1 more source

Actinoidmetal Boron Carbides

1990
The constitution i.e. the phase equilibria of the ternary systems: actinoid metal (Th,U,Pu,Np) — boron — carbon has been investigated by X-ray diffraction and metallographic techniques as well as by melting point analysis, and phase relations have been established in isothermal sections.
openaire   +1 more source

Preparation of Boron from Boron Carbide

Journal of The Electrochemical Society, 1960
A process for the preparation of elemental boron from boron carbide is presented. Included is evidence which shows that the process is one of anodic transfer. Boron of at least 99.8% purity can be made directly from technical-grade materials. Purity is a function of electrolysis voltages and boron carbide purity.
openaire   +1 more source

Electroextraction of boron from boron carbide scrap

Materials Characterization, 2013
Studies were carried out to extract elemental boron from boron carbide scrap. The physicochemical nature of boron obtained through this process was examined by characterizing its chemical purity, specific surface area, size distribution of particles and X-ray crystallite size.
Ashish Jain, S. Anthonysamy, C. Ghosh, T.R. Ravindran, R. Divakar, E. Mohandas   +5 more
openaire   +1 more source

Thermal properties of boron and boron carbides

AIP Conference Proceedings, 1986
The specific heat of β‐B shows the features characteristic for pure dielectric crystals. At low temperatures, it varies as T3; from the prefactor the Debye temperature is determined to 1520 K. In boron carbides, however, low temperature anomalies have been observed.
P. R. H. Türkes, E. T. Swartz, R. O. Pohl   +2 more
openaire   +1 more source