Transformation-induced plasticity and cascading structural changes in hexagonal boron nitride under high pressure and shear

2005 ◽  
Vol 86 (7) ◽  
pp. 071912 ◽  
Author(s):  
Valery I. Levitas ◽  
Yanzhang Ma ◽  
Javad Hashemi
Keyword(s):  
High Pressure ◽  
Boron Nitride ◽  
Structural Changes ◽  
Hexagonal Boron Nitride ◽  
Transformation Induced Plasticity

Polycrystalline boron nitride constructed from hexagonal boron nitride

RSC Advances ◽  
2014 ◽  
Vol 4 (73) ◽  
pp. 38589-38593 ◽  
Author(s):  
N. Xu ◽  
J. F. Li ◽  
B. L. Huang ◽  
B. L. Wang
Keyword(s):  
High Pressure ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Polycrystalline Structure ◽  
Shed Light

Two classes of structural families of boron nitride allotropes (named as X-BNs and L-BNs) are proposed to shed light on the polycrystalline structure of high pressure h-BN.

Tribology in Superplastic Forming Processing of 3Y-TZP/Al2O3 Ceramic at Elevated Temperatures

2007 ◽  
Vol 551-552 ◽  
pp. 507-512
Author(s):  
F. Wang ◽  
Kai Feng Zhang ◽  
Wen Bo Han
Keyword(s):  
High Pressure ◽  
Boron Nitride ◽  
Friction Factor ◽  
Elevated Temperatures ◽  
Hexagonal Boron Nitride ◽  
Superplastic Forming ◽  
Ceramic Materials ◽  
Cubic Phase ◽  
X Ray Diffraction ◽  
Higher Temperature

Superplastic forming processing of ceramic materials at high temperatures and high pressure puts forward very high requests to moulds and lubricants, at which conditions seeking for appropriate lubricants is one of important preconditions in the superplastic forming of ceramic materials. Using ring compressive testing, lubricities of hexagonal boron nitride in superplastic compressive forming processing of 3Y-TZP/Al2O3 ceramic composite at elevated temperatures were investigated. Theoretical curves of friction factor were drawn according to upper bound method. Ring compressive tests were adopted at temperature of 1400 °C-1600 °C. The results indicate that when BN is used, friction factor is about 0.4, meanwhile friction factor don’t have great changes with higher temperature and increasing strain rate. X-ray diffraction shows that under high temperature and high pressure no boron nitride converts to cubic phase, which remains at room temperature.

On the choice of hexagonal boron nitride for high pressure phase transformation using the catalyst solvent process

1991 ◽  
Vol 26 (1) ◽  
pp. 196-202 ◽  
Author(s):  
M. M. Bindal ◽  
B. P. Singh ◽  
S. K. Singhal ◽  
R. K. Nayar ◽  
R. Chopra ◽  
...  
Keyword(s):  
High Pressure ◽  
Phase Transformation ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
High Pressure Phase ◽  
Pressure Phase

Title: Periodic Mesoporous Hexagonal Boron Nitride at High Pressure: A Route to Cubic Boron Nitride Nanocrystals and Mesoporous Cubic Boron Nitride

2017 ◽  
Vol 2 (2) ◽  
pp. 740-744 ◽  
Author(s):  
Manik Mandal ◽  
Cong Liu ◽  
Toby Sanders ◽  
Fadi Haso ◽  
Venkata Bhadram ◽  
...  
Keyword(s):  
High Pressure ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Cubic Boron Nitride

scholarly journals Selective etching of hexagonal boron nitride by high-pressure CF4 plasma for individual one-dimensional ohmic contacts to graphene layers

2020 ◽  
Vol 117 (24) ◽  
pp. 243101
Author(s):  
Yuta Seo ◽  
Satoru Masubuchi ◽  
Eisuke Watanabe ◽  
Momoko Onodera ◽  
Rai Moriya ◽  
...  
Keyword(s):  
High Pressure ◽  
Boron Nitride ◽  
Ohmic Contacts ◽  
Hexagonal Boron Nitride ◽  
Selective Etching ◽  
One Dimensional ◽  
Graphene Layers
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