Results 31 to 40 of about 1,083 (200)

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

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

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

Tool-life and wear mechanisms of CBN tools in machining of Inconel 718 [PDF]

, 2007
The demand for increasing productivity when machining heat resistant alloys has resulted in the use of new tool materials such as cubic boron nitride (CBN) or ceramics.
DESSOLY, Michel, GUILLET, Yoann, POULACHON, Gerard, Guillet,, Yoann, COSTES, Jean-Philippe   +4 more
core   +1 more source

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

Thermodynamic Analysis about Nucleation and Growth of Cubic Boron Nitride Crystals in the hBN-Li3N System under High Pressure and High Temperature

Entropy, 2015
The nucleation of cubic boron nitride (cBN) single crystals synthesized with lithium nitride (Li3N) as a catalyst under high pressure and high temperature (HPHT) was analyzed.
Xiao-Fei Guo, Bin Xu, Wen Zhang, Mei-Zhe Lv, Hong-Mei Yang, Xiao-Hong Fan   +5 more
doaj   +1 more source

Tribological behaviour of alumina-based nanocomposites reinforced with uncoated and Ni-coated cubic boron nitride

Journal of Materials Research and Technology, 2019
Currently, there is a rising demand to develop composite materials with outstanding tribological properties along with excellent thermal-mechanical properties for harsh tribological applications.
Muhammad Umar Azam, Bilal Anjum Ahmed, Abbas Saeed Hakeem, Hafiz Muzammil Irshad, Tahar Laoui, Muhammad Ali Ehsan, Faheemuddin Patel, Fazal Ahmad Khalid   +7 more
doaj   +1 more source

High-Pressure Design of Advanced BN-Based Materials

Molecules, 2016
The aim of the present review is to highlight the state of the art in high-pressure design of new advanced materials based on boron nitride. Recent experimental achievements on the governing phase transformation, nanostructuring and chemical synthesis in
Oleksandr O. Kurakevych, Vladimir L. Solozhenko   +1 more
doaj   +1 more source