scholarly journals Dielectric Spectroscopy of Hydrogen-Treated Hexagonal Boron Nitride Ceramics

2020 ◽  
Vol 2 (5) ◽  
pp. 1193-1202
Author(s):  
Jerome A. Cuenca ◽  
Soumen Mandal ◽  
David J. Morgan ◽  
Malcolm Snowball ◽  
Adrian Porch ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Dielectric Spectroscopy ◽  
Hexagonal Boron Nitride ◽  
Nitride Ceramics

Grain-orientation dependence of the anisotropic thermal shock performance of hexagonal boron nitride ceramics

2020 ◽  
Vol 178 ◽  
pp. 402-407 ◽  
Author(s):  
Bo Niu ◽  
Dechang Jia ◽  
Delong Cai ◽  
Zhihua Yang ◽  
Xiaoming Duan ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Thermal Shock ◽  
Grain Orientation ◽  
Hexagonal Boron Nitride ◽  
Orientation Dependence ◽  
Nitride Ceramics

Boron nitride ceramics from molecular precursors: synthesis, properties and applications

2016 ◽  
Vol 45 (3) ◽  
pp. 861-873 ◽  
Author(s):  
Samuel Bernard ◽  
Chrystelle Salameh ◽  
Philippe Miele
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Single Source ◽  
Single Source Precursors ◽  
Molecular Precursors ◽  
Nitride Ceramics ◽  
Synthesis Properties

Hexagonal boron nitride (h-BN) attracts considerable interest particularly when it is prepared from borazine-based single-source precursors through chemical routes suitable for the shaping and the nanostructuration of the final ceramic.

Brazing of hexagonal boron-nitride ceramics with VT1-0 titanium alloy using a rapidly quenched titanium-based brazing alloy

2014 ◽  
Vol 29 (3) ◽  
pp. 222-226 ◽  
Author(s):  
I.V. Fedotov ◽  
A.N. Suchkov ◽  
V.T. Fedotov ◽  
O.N. Sevryukov ◽  
B.A. Kalin ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Nitride Ceramics

Dynamic breakage of porous hexagonal boron nitride ceramics subjected to impact loading

2019 ◽  
Vol 353 ◽  
pp. 359-371 ◽  
Author(s):  
Hebin Jiang ◽  
Songlin Xu ◽  
Junfang Shan ◽  
Daorong Wang ◽  
Yonggui Liu ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Impact Loading ◽  
Hexagonal Boron Nitride ◽  
Nitride Ceramics

Correlation between microstructure and electrical resistivity of hexagonal boron nitride ceramics

2013 ◽  
Vol 33 (6) ◽  
pp. 1225-1235 ◽  
Author(s):  
Clemens Steinborn ◽  
Mathias Herrmann ◽  
Uwe Keitel ◽  
Andreas Schönecker ◽  
Jan Räthel ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Nitride Ceramics

Thermal Conductivity of Hot-Pressed BN Ceramics

2006 ◽  
Vol 510-511 ◽  
pp. 398-401 ◽  
Author(s):  
Sang Kee Lee ◽  
Kazuo Nakamura ◽  
Shoichi Kume ◽  
Koji Watari
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Hot Pressing ◽  
Hexagonal Boron Nitride ◽  
Nitrogen Atmosphere ◽  
Uniaxial Pressure ◽  
Sintering Additives ◽  
Nitride Ceramics

Hexagonal boron nitride ceramics with sintering additives were synthesized by uniaxial hot-pressing. Hot pressing was carried out at 1800oC for 2 h under the uniaxial pressure of 30 MPa under a nitrogen atmosphere. Thermal conductivity perpendicular and parallel to the direction of the hot-pressing axis was measured by the laser-flush method.

Microstructural Aspects of the Hot-Pressed Hexagonal Boron Nitride Ceramics with Limited Content of Boron Oxide

2007 ◽  
Vol 554 ◽  
pp. 197-200 ◽  
Author(s):  
B. Ertug ◽  
T. Boyraz ◽  
O. Addemir
Keyword(s):  
Boron Nitride ◽  
Boron Oxide ◽  
Hexagonal Boron Nitride ◽  
Secondary Phase ◽  
Nitrogen Atmosphere ◽  
Microstructural Properties ◽  
Growth Behaviour ◽  
Sintering Additive ◽  
Eds Analysis ◽  
Nitride Ceramics

Hexagonal boron nitride (h-BN) based ceramics have been fabricated by hot-pressing in a nitrogen atmosphere at 1900°C for 60 min. under a pressure of 50 MPa with B2O3 as sintering additive. The phase composition was confirmed by XRD. The microstructural properties of h-BN powders and hot-pressed surfaces were evaluated by SEM-EDS analysis. The formation of the secondary phase was also investigated with particular interest on grain boundaries. The sintered densities were also determined by Archimedes’ method. The maximum relative density was obtained to be about 92 %. The effect of the existence of boron oxide on the boron nitride grain growth behaviour was discussed on the basis of microstructural features.

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