Results 291 to 300 of about 45,166 (322)
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Journal of the American Ceramic Society, 2016
Abstract Hexagonal BN is an unusual material in that it is both highly thermally conductive as well as an electrical insulator. Additionally, hBN is also thermally stable in air. This unusual combination of properties makes
Ching‐cheh Hung +4 more
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Abstract Hexagonal BN is an unusual material in that it is both highly thermally conductive as well as an electrical insulator. Additionally, hBN is also thermally stable in air. This unusual combination of properties makes
Ching‐cheh Hung +4 more
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Intrinsic ferromagnetism in hexagonal boron nitride nanosheets
The Journal of Chemical Physics, 2014Understanding the mechanism of ferromagnetism in hexagonal boron nitride nanosheets, which possess only s and p electrons in comparison with normal ferromagnets based on localized d or f electrons, is a current challenge. In this work, we report an experimental finding that the ferromagnetic coupling is an intrinsic property of hexagonal boron nitride ...
M S, Si +8 more
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Preparation of Nanostructured Hexagonal Boron Nitride Powder
Journal of the American Ceramic Society, 2003In this communication, we describe an inexpensive and feasible method for the preparation of hexagonal boron nitride (h–BN) nanorods in the absence of metal catalyst. Tertiary calcium phosphate (Ca 3 (PO 4 ) 2 ...
Lian Gao, Jingguo Li
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Submillimeter Optical Properties of Hexagonal Boron Nitride
MRS Proceedings, 1992ABSTRACTThe submillimeter optical properties of hot-pressed boron nitride with a hexagonal crystal structure were studied at room temperature from approximately 20 cm-1 to 120 cm-1 (500μm -84 μm) with a Fourier Transform Spectrometer. Several grades were studied and probed both parallel and perpendicular to the material's optic axis.
A. J. Gatesman, R. H. Giles, J. Waldman
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Boron-nitride nanotube triggered self-assembly of hexagonal boron-nitride nanostructure
Physical Chemistry Chemical Physics, 2014Molecular mechanics results show that a hexagonal boron nitride (h-BN) membrane can spontaneously assemble on the single-walled boron nitride nanotube (BNNT) in a scroll or helical manner, showing an interesting dependence on h-BN width.
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Thermal transport in hexagonal boron nitride nanoribbons
Nanotechnology, 2010The thermal transport properties of hexagonal boron nitride nanoribbons (BNNRs) are investigated. By calculating the phonon spectrum and thermal conductance, it is found that the BNNRs possess excellent thermal transport properties. The thermal conductance of BNNRs can be comparable to that of graphene nanoribbons (GNRs) and even exceed the latter ...
Tao, Ouyang +5 more
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Hexagonal boron nitride and water interaction parameters
The Journal of Chemical Physics, 2016The study of hexagonal boron nitride (hBN) in microfluidic and nanofluidic applications at the atomic level requires accurate force field parameters to describe the water-hBN interaction. In this work, we begin with benchmark quality first principles quantum Monte Carlo calculations on the interaction energy between water and hBN, which are used to ...
Yanbin Wu +2 more
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Pressureless Sintering of Hexagonal Boron Nitride Powders
Materials Science Forum, 2007Pressureless sintering of hexagonal boron nitride (BN) with and without additives was performed using a powder which was previously nitrided at 900oC and then heat treated at 1400oC. Sintering additives were B2O3 (2, 4, 6 wt %) and Y2O3 (2, 4, 6 wt %) and sintering temperatures was 1900oC. Sintered samples were characterized by XRD, SEM, micro hardness,
Ay, Nuran, Töre, I.
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Hexagonal Boron Nitride (h-BN)
1999Boron nitride (BN) exists in three crystalline forms. The hexagonal form (h-BN) is the normal phase stable at room temperature and pressure [1]. It is isostructural with graphite. At high temperature and pressure, h-BN (space group=P6 3/mmc) may transform into a wurtzite structure (P6 3 mc).
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