Atomic-Scale Structural Investigations on the Nucleation of Cubic Boron Nitride from Amorphous Boron Nitride under High Pressures and Temperatures

2002 ◽  
Vol 14 (4) ◽  
pp. 1873-1878 ◽  
Author(s):  
J. Y. Huang ◽  
Yuntian T. Zhu
Keyword(s):  
Boron Nitride ◽  
High Pressures ◽  
Cubic Boron Nitride ◽  
Atomic Scale ◽  
Amorphous Boron ◽  
Structural Investigations ◽  
High Pressures And Temperatures

Sintering of wurtzitic boron nitride under high pressures and temperatures

1994 ◽  
Vol 13 (1) ◽  
pp. 73-75 ◽  
Author(s):  
M. M. Bindal ◽  
B. P. Singh ◽  
S. K. Singhal ◽  
R. K. Nayar ◽  
R. Chopra
Keyword(s):  
Boron Nitride ◽  
High Pressures ◽  
High Pressures And Temperatures ◽  
Wurtzitic Boron Nitride

Atomic-scale structure at the nucleation site of cubic boron nitride deposited from the vapor phase

1999 ◽  
Vol 59 (15) ◽  
pp. 10351-10355 ◽  
Author(s):  
Yukiko Yamada-Takamura ◽  
Osamu Tsuda ◽  
Hideki Ichinose ◽  
Toyonobu Yoshida
Keyword(s):  
Boron Nitride ◽  
Vapor Phase ◽  
Cubic Boron Nitride ◽  
Nucleation Site ◽  
Scale Structure ◽  
Atomic Scale ◽  
Atomic Scale Structure

Hard Metal Matrix Composites Reinforced with Cubic Boron Nitride

2012 ◽  
Vol 727-728 ◽  
pp. 310-313 ◽  
Author(s):  
Guerold Sergueevitch Bobrovinitchii ◽  
Ana Lúcia Diegues Skury ◽  
Sérgio Neves Monteiro ◽  
Marcia G. de Azevedo
Keyword(s):  
Boron Nitride ◽  
High Speed ◽  
High Pressures ◽  
Cubic Boron Nitride ◽  
Hard Metal ◽  
Matrix Composites ◽  
Powder Mixtures ◽  
Negative Effect ◽  
Machining Operations ◽  
Composite Properties

Cubic boron nitride (cBN) composites with hardmetal such as metal turning and rocks drilling, WC-Co, matrix are alternative substitutes for similar diamond composites in high speed machining operations and rocks and drilling. Although it possesses related technical properties close to diamond, cBN has the inconvenience of reacting with hardmetals. This deteriorates the composite properties. A possible solution to this negative effect is to apply high pressures during the sintering operation. In this work, powder mixtures of cBN with a hardmetal (WC15%Co) were subjected to pressures up to 7.0GPa and temperatures up to 1400°C for 40 seconds. The results showed significantly higher values of hardness and compressive strength as well as an improved wear resistance.

Turbostratic boron nitride (BNt) under high pressures and temperatures

1986 ◽  
Vol 117 (1-2) ◽  
pp. 241-245 ◽  
Author(s):  
I.S. Gladkaya ◽  
G.N. Kremkova ◽  
V.N. Slesarev
Keyword(s):  
Boron Nitride ◽  
High Pressures ◽  
High Pressures And Temperatures
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