Synthesis of boron nitride nanotubes employing mechanothermal process and its characterization
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Multi-walled boron nitride (BN) nanotubes having cylindrical structure were synthesized employing the mechanothermal process. In this process hexagonal boron nitride powder (hBN) was first ball milled for 50–100 h using a high-energy ball mill and the ball-milled samples were annealed in N2 atmosphere for about 10 h in the temperature range of 950–1300 °C. The BN nanotubes exhibited a well-crystallized hexagonal structure with about 25–40 nm in diameter and up to 1 μm length. These BN nanotubes were well characterized using various techniques, such as, XRD, SEM, TEM and Raman Spectroscopy.
KeywordsBall Milling Boron Nitride Select Area Electron Diffraction Boron Nitride Nanotubes Boron Nitride Powder
The authors are grateful to the Director, National Physical laboratory, New Delhi, India, for his permission to publish these results. Thanks are also due to Mr. K.N. Sood and Dr. Nita Dilawar for their help in SEM and Raman spectroscopy studies, respectively.
- 19.Zhang J, Li Z, Xu J (2005) J Mater Sci Tech 21:128Google Scholar