No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
Research Update: Direct conversion of h-BN into pure c-BN at ambient temperatures and pressures in air
19.Y. Meng, H.-K. Mao, P. J. Eng, T. P. Trainor, M. Newville, M. Y. Hu, C. Kao, J. Shu, D. Hausermann, and R. J. Hemley, Nat. Mater. 3, 111 (2004).
28.J. Steinbeck, G. Braunstein, G. Dresselhaus, M. S. Dresselhaus, T. Venkatesan, and D. C. Jacobson, J. Appl. Phys. 64, 1802 (1988).
Article metrics loading...
We report a direct conversion of hexagonal boron nitride (h-BN) into pure cubic boron nitride (c-BN) by nanosecond laser melting at ambient temperatures and atmospheric pressure in air. According to the phase diagram, the transformation from h-BN into c-BN can occur only at high temperatures and pressures, as the hBN-cBN-Liquid triple point is at 3500 K/9.5 GPa. Using nanosecond laser melting, we have created super undercooled state and shifted this triple point to as low as 2800 K and atmospheric pressure. The rapid quenching from super undercooled state leads to formation of super undercooled BN (Q-BN). The c-BN phase is nucleated from Q-BN depending upon the time allowed for nucleation and growth.
Full text loading...
Most read this month