Results 81 to 90 of about 38,530 (252)

The Solid State \u3csup\u3e13\u3c/sup\u3eC-NMR Spectra of Some Carbides [PDF]

open access: yes, 1978
The utility of NMR spectroscopy to the study of liquids or solids dissolved in liquids is well known. This technique has been used infrequently to studies in the solid state[I,2]. Work has been done on diamond, graphite and coa113-6].
Haworth, Daniel T., Wilkie, Charles A.
core   +1 more source

Melting of B12P2 boron subphosphide under pressure

open access: yes, 2016
Melting of boron subphosphide (B12P2) to 26 GPa has been studied by in situ synchrotron X-ray powder diffraction in a laser-heated diamond anvil cell, and by quenching and electrical resistance measurements in a toroid-type high-pressure apparatus. B12P2
Cherednichenko, Kirill A.   +5 more
core   +1 more source

Heterointerface‑Enabled Electrocatalysis for Efficient Energy Conversion

open access: yesAdvanced Science, EarlyView.
Functionally distinct A/B materials can be integrated at the nanoscale to create customized heterointerfaces with tunable band alignment and charge redistribution, providing fast electron and ion transport channels as well as cooperative dual active sites.
Liuru Fang   +3 more
wiley   +1 more source

Dynamic Modulus and Damping of Boron, Silicon Carbide, and Alumina Fibers [PDF]

open access: yes
The dynamic modulus and damping capacity for boron, silicon carbide, and silicon carbide coated boron fibers were measured from-190 to 800 C. The single fiber vibration test also allowed measurement of transverse thermal conductivity for the silicon ...
Dicarlo, J. A., Williams, W.
core   +1 more source

Deciphering Intricacies in Directional CO2 Conversion From Electrolysis to CO2 Batteries

open access: yesAdvanced Energy Materials, EarlyView.
This review will delve into the inherent connections and distinctions of CO2‐directed conversion in ECO2RR and CO2 batteries, in terms of product types, catalyst selection, catalytic mechanisms, and electrochemical performances, while proposing a benchmarking framework for the evaluation of CO2 batteries and innovative CO2 battery configurations for ...
Changfan Xu   +5 more
wiley   +1 more source

Microwave synthesis of B4C nanopowder for subsequent spark plasma sintering

open access: yesJournal of Materials Research and Technology, 2019
Utilization of microwave-assisted (MW) synthesis and subsequent spark plasma sintering as an efficient and rapid synthetic route toward the preparation and consolidation of ultrahard B4C boron carbide without additives is reported. Magnesium dodecaboride
D. Davtyan   +4 more
doaj   +1 more source

3D Printing with Mixed Powders of Boron Carbide and Al Alloy

open access: yesApplied Sciences, 2020
Laser additive manufacturing with mixed powders of boron carbide and aluminum alloy is investigated. Parameters such as laser power, scan speed, scan pattern, and hatching space are systematically evaluated and optimized to obtain the desired density and
Shuang Bai, Hyeong Jae Lee, Jian Liu
doaj   +1 more source

Boron-Rich Semiconducting Boron Carbide Neutron Detector

open access: yesJapanese Journal of Applied Physics, 2005
Data on the neutron detection capabilities of a variety of boron carbide/Si heterojunction diodes is presented. The pulse height spectra are compared with previously measured conversion layer devices and the variations in shape and position of the peaks are discussed.
Harken, Andrew D.   +3 more
openaire   +2 more sources

THE EFFECT OF TEMPERATURE AND MAGNESIUM SIZE ON LOW TEMPERATURE MAGNESIOTHERMIC SYNTHESIS OF NANO STRUCTURES BORON CARBIDE BY MESOPOROUS CARBON (CMK-1)

open access: yesIranian Journal of Materials Science and Engineering, 2016
In this study, Boron carbide was synthesized using Mesoporous Carbon CMK-1, Boron oxide, and magnesiothermic reduction process. The Effects of temperature and magnesium grain size on the formation of boron carbide were studied using nano composite ...
P. Amin   +3 more
doaj  

Compatibility of refractory materials for nuclear reactor poison control systems [PDF]

open access: yes
Metal-clad poison rods have been considered for the control system of an advanced space power reactor concept studied at the NASA Lewis Research Center. Such control rods may be required to operate at temperatures of about 140O C.
Sinclair, J. H.
core   +1 more source

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