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Catalytic Decomposition of Cubic Boron Nitride
2023Cubic boron nitride (CBN) materials are a mainstay in the tooling industry, concerned primarily with advanced machining of ferrous-containing metal alloys. Combining both conventional and real-time X-ray photoelectron spectroscopy, the surface chemistry of both a commercial standard AMB90 and a high-quality binder-free polycrystalline CBN compact ...
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Grinding with Cubic Boron Nitride
1974Beginning with a comparison of various abrasives and their mechanisms of wear, the specific problems when grinding high-speed steel with cubic boron nitride cup wheels are discussed. The necessary truing and dressing of the grinding section before the first usage is given special attention, because these preparations have an important effect on ground ...
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Shock compression of cubic boron nitride
Journal of Applied Physics, 2009Hugoniot measurements have been performed on high-purity cubic boron nitride polycrystals in the pressure range up to 296GPa using a two-stage light-gas gun. Hugoniot parameters have been measured by a line reflection method and Fabry–Pérot velocimetry.
Nobuaki Kawai +4 more
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Activating deformation twinning in cubic boron nitride
Nature MaterialsDeformation twinning, a phenomenon primarily documented within metallic systems, has remained essentially unexplored in covalent materials due to the formidable challenges posed by their inherent extreme hardness and brittleness. Here, by employing a five-degree-of-freedom nano-manipulation stage inside a transmission electron microscope, we reveal a ...
Yeqiang Bu +16 more
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Preparation and characterization of cubic boron nitride and metal boron nitride films*
Surface and Interface Analysis, 1994Abstract Boron nitride has generated much scientific interest due to the outstanding material properties of its cubic modification (c‐BN) which can be compared with those of diamond, and to its metal (M) boron nitride compounds (MBN) which have extraordinary mechanical properties such as high hardness and high elasticity. This paper
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Preparation of Semiconducting Cubic Boron Nitride
The Journal of Chemical Physics, 1962Semiconducting crystals of cubic BN may be prepared at high pressures and temperatures by adding small amounts of selected impurities to the synthesis mixture (hexagonal boron nitride plus lithium or magnesium nitride). P-type crystals, blue in color, can be prepared by adding Be; they may have resistivities of about 103 ohm-cm and activation energies ...
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Stability of interstitials in cubic boron nitride
Solid State Communications, 1996Cubic boron nitride is of potential interest in a number of applications. We have carried out a series of ab initio Hartree-Fock calculations on clusters simulating the local environment of an interstitial in the two types of tetrahedral cavities in the zincblende-structure BN lattice.
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Heteroepitaxy of Diamond on Cubic Boron Nitride
Israel Journal of Chemistry, 1998AbstractThe epitaxial growth process of diamond from the gas phase on a cubic boron nitride (c‐BN) {111} surface has been investigated. At the initial growth stage, carbon adsorption progressed on a boron‐terminated surface of c‐BN ({111}B). The coordination of the carbon atoms was found to be the same as that observed in diamond, as confirmed by ...
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1999
Cubic BN (c-BN) is a compound crystallizing in the zinc-blende structure. It is the lightest among the III–V family. It possesses many unique phySiCal properties like extreme hardness, high melting point, high thermal conductivity, large band-gap energy, low dielectric constant, and high chemical stability. If the problems of crystal growth are solved,
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Cubic BN (c-BN) is a compound crystallizing in the zinc-blende structure. It is the lightest among the III–V family. It possesses many unique phySiCal properties like extreme hardness, high melting point, high thermal conductivity, large band-gap energy, low dielectric constant, and high chemical stability. If the problems of crystal growth are solved,
openaire +1 more source