Results 41 to 50 of about 7,614 (217)

Synthesis and Characterization of Polycrystalline Cubic Boron Nitride Composites with Al Binder [PDF]

open access: yesAdvances in Engineering Research, 2015
The PcBN materials were sintered from the cBN-Al systems under high-pressure and high-temperature, and the mechanical properties, composition and microstructure of prepared samples were analyzed. The results show that the microstructure is fairly even and the binding phase is uniformly distributed in its volume.
S.S. Xu, G.P. Sun, L. Liu
openaire   +1 more source

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

Modelling heat conduction in polycrystalline hexagonal boron-nitride films [PDF]

open access: yes, 2017
We conducted extensive molecular dynamics simulations to investigate the thermal conductivity of polycrystalline hexagonal boron-nitride (h-BN) films.
Jiang, Jin-Wu   +3 more
core   +2 more sources

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

Polymorph‐Specific Electronic Transduction in WO3 during Molecular Sensing

open access: yesAdvanced Materials, EarlyView.
Metal‐oxide polymorphs with similar surface chemistry can nevertheless exhibit distinct sensing properties. In γ‐ and ε‐WO3, analyte adsorption appears comparable; yet, only ε‐WO3 induces a pronounced lattice electronic perturbation that accommodates charge in sub‐conduction band minimum states.
Matteo D'Andria   +6 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

Review on the possible tool materials for friction stir welding of steel plates [PDF]

open access: yes, 2014
The friction stir welding (FSW) process is mainly used in industrial applications for joining low melting temperature materials such as aluminium and magnesium. FSW has many advantages in comparison with conventional fusion arc welding.
De Waele, Wim   +4 more
core   +1 more source

A combined experimental–numerical investigation of fracture of polycrystalline cubic boron nitride [PDF]

open access: yesEngineering Fracture Mechanics, 2013
Abstract Numerical modelling of a series of experimental Single Edge V-Notched Beam tests was carried out for a number of grades of polycrystalline cubic boron nitride using the finite volume method (FV) and cohesive zone model approach. The effect of notch root radius observed experimentally was reproduced numerically via a unique CZM for each ...
Carolan, Declan   +2 more
openaire   +3 more sources

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