Results 21 to 30 of about 2,664 (204)

Investigation of the adhesive properties of composites based on polyimide varnish and copper oxide, boron nitride and technical diamond powders [PDF]

Modern Electronic Materials
The article describes the preparing process for composites with a polyimide varnish PILK-2B matrix, which filled with particles of technical diamond, copper oxide, cubic boron nitride and hexagonal boron nitride for use in redistribution layers during ...
Igor A. Belyakov, Mikhail D. Kochergin, Ilya A. Solovyov, Vladimir G. Kurbatov, Anna A. Gavrilova, Denis V. Vertyanov   +5 more
doaj   +3 more sources

Study on synthesis of polycrystalline cubic boron nitride from hexagonal boron nitride by direct phase transition

Jin'gangshi yu moliao moju gongcheng, 2021
Polycrystalline cubic boron nitride was synthesized by direct phase transition at 9~15 GPa and 1 500~2 100 ℃ using hexagonal boron nitride as initial material.
WANG Yongkai, WEI Xing, WANG Dapeng, WEI Chaoyang, LIU Hongwei, LU Cuilian, ZHANG Xiangfa   +6 more
doaj  

Low temperature self-densification of high strength bulk hexagonal boron nitride

Nature Communications, 2019
Sintering hexagonal boron nitride until it is more than 96% dense remains a challenge. Here, the authors mix cubic boron nitride particles into hexagonal boron nitride flakes and sinter the combined powders to obtain dense hexagonal boron nitride ...
Haotian Yang, Hailiang Fang, Hui Yu, Yongjun Chen, Lianjun Wang, Wan Jiang, Yiquan Wu, Jianlin Li   +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

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

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

Production of nano- and micropowders of cubic BN from mechanically activated graphite-like BN under high pressures and temperatures using aluminium as a phase convertion initiator

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2022
An effect of mechanical activation of graphite-like (hexagonal) boron nitride (hBN) on catalytic synthesis of nano- and micropowders of cubic boron nitride (cBN) under conditions of high pressures and temperatures is shown in the article.
V. T. Senyut
doaj   +1 more source

Hard machining of agricultural machines parts

Research in Agricultural Engineering, 2013
For the renovation and/or improvement of the surface properties of machine elements, hard facing is often used. Hard structures obtained in layers or by heat treatment achieve a hardness of up to 68 hardness (HRC) or even more.
R. Drlička, J. Žarnovský, R. Mikuš, I. Kováč, M. Korenko   +4 more
doaj   +1 more source

Technics Research on Polycrystalline Cubic Boron Nitride Cutting Tools Dry Turning Ti-6AL-4V Alloy Based on Orthogonal Experimental Design

MATEC Web of Conferences, 2018
Ti-6Al-4V components are the most widely used titanium alloy products not only in the aerospace industry, but also for bio-medical applications. The machine-ability of titanium alloys is impaired by their high temperature chemical reactivity, low thermal
Jia Yunhai, Zhu Lixin
doaj   +2 more sources

Thermal properties of polycrystalline cubic boron nitride sintered under high pressure condition [PDF]

Science of Sintering, 2018
The excellent thermal and chemical properties of cubic boron nitride (cBN) indicate that it is potential materials to prepare the thermal dissipate substrate applied in the electronic packaging.
Leng Chunwei, Hu Xiaojun, Xie Hongliang, Shen Chunhua   +3 more
doaj   +1 more source