Results 141 to 150 of about 400,409 (217)
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Phosphorus doping of boron carbides
Physical Review B, 1993Substitution of an electron donor such as phosphorus for a carbon or boron atom in [ital p]-type semiconducting boron carbides is expected to reduce the hole concentration. Phosphorus-doped boron carbide samples have been prepared by hot isostatic pressing with homogeneous dopant levels of up to one phosphorus atom per ten unit cells.
, Aselage +8 more
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On the physical, chemical, and neutron shielding properties of polyethylene/boron carbide composites
Radiation Physics and Chemistry, 2020Monte Carlo methods are used for solving difficult stochastic problems in radiation shielding applications. The aim of this paper is to show the possibility of using the Monte Carlo code (MCBEND®) for evaluation and optimization of polyethylene with high
Z. Uddin +4 more
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Processing and properties of boron carbide (B4C) reinforced LDPE composites for radiation shielding
, 2020In the present work, boron carbide (B4C) particles were synthesized with sol-gel technique following with heat treatment at 1500 °C in an argon atmosphere.
S. Avcıoğlu +7 more
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Journal of Hazardous Materials, 2020
Metal-free catalysts have been proved to be a low-cost and environmentally friendly species in aerobic oxidative desulfurization (ODS). In this work, exfoliated metal-free boron carbide with few-layered structure, small size, and abundant defects, was ...
Peiwen Wu +10 more
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Metal-free catalysts have been proved to be a low-cost and environmentally friendly species in aerobic oxidative desulfurization (ODS). In this work, exfoliated metal-free boron carbide with few-layered structure, small size, and abundant defects, was ...
Peiwen Wu +10 more
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The melting of boron carbide and the homogeneity range of the boron carbide phase
Journal of the Less Common Metals, 1979Abstract Various mixtures of boron and carbon were electron beam melted. The samples were characterized by electron microprobe analysis, metallographic techniques, X-ray diffraction and Knoop microhardness measurements. The metallographic investigations, together with the electron microprobe phase analysis, showed that the boron carbide phase exists ...
M Bouchacourt, F Thevenot
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Materials Today: Proceedings, 2020
Polycarbonate (PC) composites filled with Graphene (up to 10 vol%) and Boron carbide particles (up to 5 vol%) are fabricated by Injection molding and subsequently compressed and quenched.
Mohamed Zakaulla +4 more
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Polycarbonate (PC) composites filled with Graphene (up to 10 vol%) and Boron carbide particles (up to 5 vol%) are fabricated by Injection molding and subsequently compressed and quenched.
Mohamed Zakaulla +4 more
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Pressureless sintering of titanium carbide doped with boron or boron carbide
Journal of the European Ceramic Society, 2017Abstract Titanium carbide ceramics with different contents of boron or B 4 C were pressureless sintered at temperatures from 2100 °C to 2300 °C. Due to the removal of oxide impurities, the onset temperature for TiC grain growth was lowered to 2100 °C and near fully dense (>98%) TiC ceramics were obtained at 2200 °C.
Yifeng Gu +3 more
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A review on mechanical and tribological characterization of boron carbide reinforced epoxy composite
, 2020This article is a review of the properties of boron carbide (B4C)-reinforced polymer composites. B4C have recently become attractive to researchers, engineers, and scientists as an alternative reinforcement for polymer composites due to its attractive ...
S. Bhatia, Surjit Angra, Sabah Khan
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International Journal of Refractory Metals and Hard Materials, 1999
Based on a simple principle of order: i.e. the ability of the metal species to form or not to form binary bondes, binary carbides and ternary compounds, phase equilibria of all hitherto known ternary metal boron systems are classified by four major categories. Compound formation is generally observed with rather electropositive metal elements.
P. Rogl, H. Bittermann
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Based on a simple principle of order: i.e. the ability of the metal species to form or not to form binary bondes, binary carbides and ternary compounds, phase equilibria of all hitherto known ternary metal boron systems are classified by four major categories. Compound formation is generally observed with rather electropositive metal elements.
P. Rogl, H. Bittermann
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High temperature resistant polyimide/boron carbide composites for neutron radiation shielding
Composites Part B: Engineering, 2019Boron carbide (B4C) is an important type of neutron radiation shielding material with relatively high efficiency due to the high content of 10B element.
Xiaoming Li +9 more
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