Results 21 to 30 of about 8,387 (205)

Epitaxy of Emerging Materials and Advanced Heterostructures for Microelectronics and Quantum Sciences. [PDF]

Small Methods
Epitaxy is a key enabler of next‐generation nano/microelectronics and solid‐state quantum information systems. Demands on epitaxy of emerging materials including 2D materials and quantum materials are rapidly growing to realize various proposed applications.
Lee Y, Choi SH, Kim H, Yoo J.
europepmc   +2 more sources

Ambient-Pressure Superconductivity Onset at 10 K and Robust T_c under High Pressure in TiNbTaN₃ Medium-Entropy Nitride. [PDF]

Adv Sci (Weinh)
The first observation of superconductivity in a bulk MEN TiNbTaN3 with Tc ≈ 10 K at ambient pressure and the electronic specific heat coefficient γ(H) exhibits nonlinear H‐dependence behavior, which is similar to other well‐studied multigap superconductors is reported.
Zeng L, Wang J, Liu H, Li L, Qin J, Li Y, Chen R, Song J, Hou Y, Luo H.   +9 more
europepmc   +2 more sources

Development of a Mathematical Model of the Synthesis of a Polycrystalline Superhard Material Based on Cubic Boron Nitride from Wurzite Boron Nitride Modified with Aluminum

Механика машин, механизмов и материалов, 2022
A mathematical model is developed for the technological process of synthesis under conditions of high pressures P and temperatures T of a polycrystalline superhard material based on cubic boron nitride (cBN).
Vladimir T. Senyut, Alexander M. Parnitsky, Viktor I. Zhornik   +2 more
doaj   +1 more source

Machinability of cast irons at finishing face milling of flat surfaces by superhard materials

Технічна інженерія, 2021
The article presents the result of the analysis of machinability of cast irons with different physical and mechanical properties. The thermal processes that occur in the cutting zone and the influence of cutting modes and geometric parameters of the ...
S.I. , L.Ye. , P.P.
doaj   +1 more source

Influence of binder systems on sintering characteristics, microstructures, and mechanical properties of PcBN composites fabricated by SPS

Journal of Advanced Ceramics, 2022
Cubic boron nitride (cBN) with high hardness, thermal conductivity, wear resistance, and chemical inertness has become the most promising abrasive and machining material.
Shuna Chen, Hengzhong Fan, Yunfeng Su, Wensheng Li, Jicheng Li, Bing Yan, Junjie Song, Litian Hu, Yongsheng Zhang   +8 more
doaj   +1 more source

Spark plasma sintering of cBN(core)/SiO2(shell) powder prepared by rotary chemical vapor deposition

Journal of Asian Ceramic Societies, 2014
SiO2 nanolayer coated cubic boron nitride (cBN), cBN(core)/SiO2(shell) powder, was prepared by rotary chemical vapor deposition. The cBN/SiO2 powder was densified by spark plasma sintering at 1873 K for 0.3 ks. The hexagonal boron nitride (hBN) phase was
Jianfeng Zhang, Hirokazu Katsui, Zhenhua He, Takashi Goto   +3 more
doaj   +1 more source

The Analysis of the Transformation Mechanism of cBN Crystals with the First-Principle Calculation

Journal of Chemistry, 2020
To clarify the synthesis mechanism of cubic boron nitride (cBN) with catalysts at high temperature and high pressure, we calculate the surface energy of the main phases in the Li-N-B synthesis system using the first-principle method. Based on the density
Lichao Cai, Bin Xu, Meizhe Lv, Xiaohong Fan   +3 more
doaj   +1 more source

Effect of nanostructuration on compressibility of cubic BN [PDF]

, 2012
Compressibility of high-purity nanostructured cBN has been studied under quasi-hydrostatic conditions at 300 K up to 35 GPa using diamond anvil cell and angle-dispersive synchrotron X-ray powder diffraction.
A. Dewaele, A. Latapie, F. Birch, F. Datchi, G. Garbarino, H. Couvy, H.K. Mao, J. Furthmuller, J. Zhao, J.A. Lupo, J.S. Zhang, K. Albe, K. Karch, K. Takemura, M. Mezouar, O. O. Kurakevych, O. Yeheskel, P. Munsch, P. Vinet, S.J. Zhao, V. L. Solozhenko, V.L. Solozhenko, V.L. Solozhenko, W.B. Holzapfel, Y. Le Godec, Y. Zhao   +25 more
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Transfer of Cubic Boron Nitride Grinding Wheel Wear Products to the Nickel Alloy Surface [PDF]

MATEC Web of Conferences, 2020
The article summarizes the results of microscopic and x-ray spectral studies of objects embedded in the surface layer of a nickel alloy after grinding with a wheel of cubic boron nitride (CBN) on a ceramic bond.
Nosenko Vladimir A., Fetisov Aleksandr V., Kuznesov Semen P.   +2 more
doaj   +1 more source

Order-Disorder Phase Stabilization by Pressure-Induced Charge Transfer Enhances the Ferroelectric Photovoltaic Effect in Multiferroic BaFe₄O₇. [PDF]

Adv Sci (Weinh)
A pressure‐driven charge transfer in multiferroic BaFe4O7 induces Fe valence disproportionation and structural distortion, drastically narrowing the bandgap and enhancing ferroelectric polarization. This synergistic optimization boosts photocurrent 2.5‐fold and is retained upon decompression, offering a promising strategy to overcome the ferroelectric ...
Guan J, Wang B, Li N, Peng S, Zhang G, Yan L, Liu X, Zhang K, Li M, N-Diaye A, Kong Q, Zhang D, Zhao X, Liu T, Bu K, Mao Y, Wang G, Lü X, Li X, Zeng T, Yang W.   +20 more
europepmc   +2 more sources