Results 31 to 40 of about 9,993 (282)

Boron and boron carbide by vapor deposition

open access: yesElectrodeposition and Surface Treatment, 1974
Abstract Boron trichloride can be reduced by hydrogen at 1,300°C with a recovery of approximately 85% as elemental boron. The optimum H2 to BCl3 molar ratio was 30 under the test conditions used. No reaction between tungsten substrates and the boron deposits could be detected.
J.G. Donaldson   +2 more
openaire   +2 more sources

Morphology control in high yield boron carbide

open access: yes, 2016
The production of boron carbide powder with uniform particle size in high yield is demonstrated via precise\ud control of precursor processing and handling conditions.
Watts, Joshua L.   +3 more
core   +1 more source

Characterization of aluminum and boron carbide based additive manufactured material for thermal neutron shielding

open access: yesMaterials & Design
We characterize the suitability of two additive manufactured materials for use in shielding thermal neutrons for neutron scattering instrumentation. We compare two different boron based additive manufactured masks to a traditionally manufactured boron ...
M.B. Stone   +5 more
doaj   +1 more source

Investigation of the effect of Argon flow on the morphology of B4C nanoparticles synthesized by the VLS method [PDF]

open access: yesJournal of Nanostructures, 2019
In this paper, new various morphologies of boron carbide were successfully synthesized using carbon black, activated carbon and boron oxide precursors as well as using cobalt nanoparticles as catalysts.
Ali Alizadeh, Mohammad reza Mahoodi
doaj   +1 more source

Silicon doped boron carbide for armour [PDF]

open access: yes, 2017
Boron carbide is a popular candidate armour ceramic. During high velocity impact, however, amorphous bands form, leading to the collapse of the structure, and reducing the usefulness of boron carbide in such applications.
Besnard, Cyril
core   +1 more source

Electrochemical Preparation of Nanocatalysts and Their Application in Electrocatalysis

open access: yesInternational Journal of Analytical Chemistry, 2022
In order to solve the basic problem of high-temperature sintering of molybdenum carbide restricting the efficient construction of molybdenum carbide nanostructures and the full play of hydrogen evolution performance, this article studies the preparation ...
Hao Zhou
doaj   +1 more source

Anisotropy of mechanical properties in a hot-pressed boron carbide

open access: yes, 2016
Effects of microstructure and material properties on the mechanical behavior of hot-pressed boron carbide are presented. The microstructure and intrinsic microstructural inhomogeneities have been characterized using scanning electron microscopy ...
Farbaniec, Lukasz   +3 more
core   +1 more source

High resolution imaging of boron carbide microstructures

open access: yes, 1986
Two samples of boron carbide have been examined using high resolution transmission electron microscopy (HRTEM). A hot pressed B13C2 sample shows a high density of variable width twins normal to (10-11).
Aselage, Terry   +2 more
core   +1 more source

Nanomechanical Responses of Boron Carbide [PDF]

open access: yes, 2021
Nanomechanical responses of brittle materials, such as glass and ceramics, are important for various industrial applications. Understanding their deformation and failure mechanisms would offer new knowledge and help design materials with better ...
Lien, Hsu-Ming
core  

Evidence of interstitial-mediated boron self-diffusion in boron carbide

open access: yes, 2023
International audienceBoron carbide is an important high-temperature material with interesting structural and functional properties. However, self-diffusion is very poorly known on this material, and also the few impurity diffusion studies, devoted in ...
Thomas Schuler   +3 more
core   +1 more source

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