Results 41 to 50 of about 13,468 (252)

Superhard Phases of Simple Substances and Binary Compounds of the B-C-N-O System: from Diamond to the Latest Results (a Review)

open access: yes, 2011
The basic known and hypothetic one- and two-element phases of the B-C-N-O system (both superhard phases having diamond and boron structures and precursors to synthesize them) are described.
A. Badzian   +135 more
core   +1 more source

Towards the theory of hardness of materials [PDF]

open access: yes, 2010
Recent studies showed that hardness, a complex property, can be calculated using very simple approaches or even analytical formulae. These form the basis for evaluating controversial experimental results (as we illustrate for TiO2-cotunnite) and enable a
Lyakhov, A. O., Oganov, A. R.
core   +2 more sources

Application of the finite element method to search for ways to optimize the temperature field when cutting with tools from the ВL group PCNB

open access: yesТехнічна інженерія, 2022
The intensification of the machine-building industry today is connected with the development of the latest methods of researching the processes of manufacturing machine parts and with the improvement of high-speed cutting processes.
Ya.Р. , I.A., P.Р.
doaj   +1 more source

Low pressure growth of cubic boron nitride films [PDF]

open access: yes, 1997
A method for forming thin films of cubic boron nitride on substrates at low pressures and temperatures. A substrate is first coated with polycrystalline diamond to provide a uniform surface upon which cubic boron nitride can be deposited by chemical ...
Ong, Tiong P., Shing, Yuh-Han
core   +1 more source

Low-Temperature Deposition of Hexagonal Boron Nitride via Sequential Injection of Triethylboron and N2/H2 Plasma [PDF]

open access: yes, 2014
Cataloged from PDF version of article.Hexagonal boron nitride (hBN) thin films were deposited on silicon and quartz substrates using sequential exposures of triethylboron and N 2 /H 2 plasma in a hollow-cathode plasma- assisted atomic layer ...
Biyikli, N.   +4 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Clarification of the Mechanism of Pulse Laser Grinding of Nanosecond Lasers Using High-Speed Camera Imaging

open access: yesMachines, 2022
Pulse laser grinding (PLG), as a cutting tool processing method, can not only achieve edge sharpening with high precision, but it can also produce surface modification.
Xiaoxu Liu   +5 more
doaj   +1 more source

Synthesis of atomically thin hexagonal boron nitride films on nickel foils by molecular beam epitaxy

open access: yes, 2015
Hexagonal boron nitride (h-BN) is a layered two-dimensional material with properties that make it promising as a dielectric in various applications. We report the growth of h-BN films on Ni foils from elemental B and N using molecular beam epitaxy.
Hanke, M.   +7 more
core   +1 more source

C16 Phase High Entropy Borides With High Magnetic Anisotropy

open access: yesAdvanced Materials, EarlyView.
Rare‐earth‐free C16‐phase high entropy boride thin films exhibit enhanced magnetic anisotropy with coercivities surpassing their binary and ternary counterparts. Combinatorial synthesis of (Fe‐Co‐Ni‐Mn)2B films combined with density functional theory enables mapping of the magnetic properties across the composition space, revealing high entropy ...
Willie B. Beeson   +5 more
wiley   +1 more source

Influence of Niobium Addition on Microstructure and Machinability of High Chromium Cast Iron

open access: yesMaterials Research, 2021
High Chromium Cast Iron (HCCI) is mostly utilised in environments under severe abrasion and corrosion wear conditions, and research on this material with added niobium obtained positive results regarding wear resistance.
Anderson Edson da Silva   +3 more
doaj   +1 more source

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